Magnus Karlsson

Professor at Chalmers, Microtechnology and Nanoscience (MC2), Photonics

Magnus Karlsson got his M. Sc. in 1991 and his Ph. D. in 1994 from Chalmers University of Technology, Sweden. The title of his Ph. D. thesis was "Nonlinear propagation of optical pulses and beams". Since 2003 he is professor in Photonics at Chalmers, devoted to research in fiber optics and optical communications. He teaches or has taught undergraduate courses in "Wireless and photonics system engineering", "Photonics", and "Fiber optic Communications". He also teaches post-graduate courses on "Nonlinear fiber optics"and "Fiber optic polarization effects".

Source: orcid.org

Projects

2017–2020

Multimode and multicore fiber technologies for spatial division multiplexing

Magnus Karlsson Photonics
The Swedish Foundation for International Cooperation in Research and Higher Education (STINT)

2017–2022

Integrerade optiska sändare för våglängdsmultiplexering i datacenternätverk

Anders Larsson Photonics
Victor Torres Company Photonics
Magnus Karlsson Photonics
Peter Andrekson Photonics
Swedish Research Council (VR)

2014–2019

Energy-efficient optical fibre communication

Erik Agrell Communication Systems
Christoffer Fougstedt Computer Engineering (Chalmers)
Anders Larsson Photonics
Peter Andrekson Photonics
Alexandre Graell i Amat Communication Systems
Kevin Cushon Computer Engineering (Chalmers)
Alireza Sheikh Communication Systems
Per Larsson-Edefors Computer Engineering (Chalmers)
Magnus Karlsson Photonics
Lars Lundberg Photonics
Knut and Alice Wallenberg Foundation

2016–2019

Polarization-aware fiber optic transmisson

Magnus Karlsson Photonics
Erik Agrell Communication Systems
Swedish Research Council (VR)

2015–2018

Technologies for spatial-division multiplexing: The next frontier in optical communications

Peter Andrekson Photonics
Victor Torres Company Photonics
Magnus Karlsson Photonics
Arni Alfredsson Communication Systems
Erik Agrell Communication Systems
Swedish Research Council (VR)

2011–2013

Theory and algorithms for fiber-optical intensity channels

Erik Agrell Communication Systems
Magnus Karlsson Photonics
Johnny Karout Communication Systems
Swedish Research Council (VR)

2010–2013

Elastic Optical Networks

Erik Agrell Communication Systems
Magnus Karlsson Photonics
VINNOVA

2011–2012

Signalprocessning i framtida kommunikationssystem med extremt hög datakapacitet

Magnus Karlsson Photonics
Herbert Zirath Microwave Electronics
VINNOVA

2016–2025

Noiseless phase-sensitive optical amplifiers and their applications

Peter Andrekson Photonics
Magnus Karlsson Photonics
Jörgen Bengtsson Photonics
Victor Torres Company Photonics
Samuel L I Olsson Photonics
Seyedeh Nazemosadat Photonics
Henrik Eliasson Photonics
Josué Amílcar Parra Cetina Photonics
Ravikiran Kakarla Photonics
Abel Lorences Riesgo Photonics
Clemens Krückel Photonics
Attila Fülöp Photonics
Swedish Research Council (VR)

2014–2017

Optical Fiber Interference is Not Noise

Erik Agrell Communication Systems
Magnus Karlsson Photonics
Giuseppe Durisi Communication Systems
Kamran Keykhosravi Communication Systems
Swedish Research Council (VR)

2013–2016

Adaptive optical networks: Theory and algorithms for system optimization

Erik Agrell Communication Systems
Henk Wymeersch Communication Systems
Peter Andrekson Photonics
Magnus Karlsson Photonics
Li Yan Communication Systems
Cristian Bogdan Czegledi Communication Systems
Swedish Research Council (VR)

8 publications exist
2012–2015

Optical channel estimation and performance monitoring

Magnus Karlsson Photonics
Swedish Research Council (VR)

2011–2014

Power-efficient terabit/s transmission

Peter Andrekson Photonics
Magnus Karlsson Photonics
Henk Wymeersch Communication Systems
Erik Agrell Communication Systems
Swedish Research Council (VR)

There might be more projects where Magnus Karlsson participates, but you have to be logged in as a Chalmers employee to see them.

Publications

2017

Pilot Distributions for Phase Tracking in Space-Divison Multiplexed Systems

Arni Alfredsson, Erik Agrell, Henk Wymeersch et al
Paper in proceedings
2017

10 Tb/s self-homodyne 64-QAM superchannel transmission with 4% spectral overhead

Mikael Mazur, Abel Lorences Riesgo, Magnus Karlsson et al
2017 Optical Fiber Communications Conference and Exhibition (OFC). Vol. Part F40-OFC 2017, p. Th3F.4-
Paper in proceedings
2017

Phase-Noise Compensation for Spatial-Division Multiplexed Transmission

Arni Alfredsson, Erik Agrell, Henk Wymeersch et al
Optical Fiber Communication Conference, OFC 2017; Los Angeles Convention Center, Los Angeles; United States; 19 March 2015 through 23 March 2017, p. Th4C.7-
Paper in proceedings
2017

Modified Digital Backpropagation Accounting for Polarization-Mode Dispersion

Cristian Bogdan Czegledi, Gabriele Liga, Domaniç Lavery et al
Paper in proceedings
2017

Power Consumption Analysis of Hybrid EDFA/Raman Amplifiers in Long-Haul Transmission Systems

Lars Lundberg, Peter Andrekson, Magnus Karlsson
Journal of Lightwave Technology. Vol. 35 (11), p. 2132-2142
Journal article
2017

Parametric amplification with a dual-core fiber

Vítor Ribeiro, Magnus Karlsson, Peter Andrekson
Optics Express. Vol. 25 (6), p. 6234-6243
Journal article
2017

Pilot Distributions for Phase Tracking in Space-Divison Multiplexed Systems

Arni Alfredsson, Erik Agrell, Henk Wymeersch et al
Paper in proceedings
2017

Experimental investigation of nonlinearity mitigation properties of a hybrid distributed Raman/phase-sensitive amplifier link

Henrik Eliasson, Samuel L I Olsson, Magnus Karlsson et al
Optical Fiber Communications Conference and Exhibition (OFC). Vol. Part F40-OFC 2017, p. Th3J.4-
Paper in proceedings
2017

Impact of Damping on 50 Gbps 4-PAM Modulation of 25G Class VCSELs

Tamas Lengyel, Emanuel Haglund, Johan Gustavsson et al
2017 Optical Fiber Communications Conference and Exhibition (Ofc), p. paper W3G.2-
Paper in proceedings
2017

High speed optical interconnects with 850 nm VCSELs and advanced modulation formats

Krzysztof Szczerba, Tamas Lengyel, Zhongxia Simon He et al
Journal of Logic and Computation. Vol. 10122, p. Article nr 101220G-
Journal article
2017

Multidimensional Modulation and Coding in Optical Transport

Magnus Karlsson, Erik Agrell
Journal of Lightwave Technology. Vol. PP (99), p. 7582378-
Journal article
2017

Effects of Polarization-Mode Dispersion on Degenerate Four-Wave Mixing

Colin McKinstrie, Magnus Karlsson
Journal of Lightwave Technology. Vol. 35 (19), p. 4210-4218
Journal article
2017

Feature issue introduction: Nonlinearity mitigation for coherent transmission systems

Magnus Karlsson, N. Alic, S. Chandrsekhar et al
Optics Express. Vol. 25 (4), p. 4552-4553
Magazine article
2017

Power Consumption Analysis of Hybrid EDFA/Raman Amplifiers in Long-Haul Transmission Systems

Lars Lundberg, Peter Andrekson, Magnus Karlsson
Journal of Lightwave Technology. Vol. 35 (11), p. 2132-2142
Journal article
2017

Time-Domain Digital Back Propagation: Algorithm and Finite-Precision Implementation Aspects

Christoffer Fougstedt, Mikael Mazur, Lars Svensson et al
Optical Fiber Communications Conference and Exhibition, p. Article no 7937325-
Paper in proceedings
2017

Optical nonlinearity mitigation of 6×10 GBd polarization-division multiplexing 16QAM signals in a field-installed transmission link

Y. Sun, Abel Lorences Riesgo, Francesca Parmigiani et al
Optics InfoBase Conference Papers. Vol. Part F40-OFC 2017, p. Th3J.2-
Paper in proceedings
2017

Digital backpropagation accounting for polarization-mode dispersion

Cristian Bogdan Czegledi, Gabriele Liga, Domaniç Lavery et al
Optics Express. Vol. 25 (3), p. 1903-1915
Journal article
2017

Theoretical Investigation of Longitudinal Dispersion Fluctuations on All-Fiber Phase-Sensitive Parametric Optical Switch

J. T. Gao, Y. Meng, S Fu et al
Journal of Lightwave Technology. Vol. 35 (9), p. 1646-1653
Journal article
2017

Design of Highly Nonlinear Few-Mode Fiber for C-Band Optical Parametric Amplification

Seyedeh Bentolhoda Nazemosadat Arsanjani, Abel Lorences Riesgo, Magnus Karlsson et al
Journal of Lightwave Technology. Vol. 35 (14), p. 2810-2817
Journal article
2017

Temporal Stochastic Channel Model for Absolute Polarization State and Polarization-Mode Dispersion

Cristian Bogdan Czegledi, Magnus Karlsson, Pontus Johannisson et al
2017 Optical Fiber Communications Conference and Exhibition (OFC), p. Th3F.2 -
Paper in proceedings
2017

Finite-Precision Optimization of Time-Domain Digital Back Propagation by Inter-Symbol Interference Minimization

Christoffer Fougstedt, Lars Svensson, Mikael Mazur et al
Paper in proceedings
2017

An impairment-aware resource allocation scheme for dynamic elastic optical networks

Madushanka Nishan Dharmaweera, Li Yan, Magnus Karlsson et al
Optics InfoBase Conference Papers. Vol. Part F40-OFC 2017, p. paper Th2A.19-
Paper in proceedings
2017

Nonbinary Staircase Codes for Spectrally and Energy Efficient Fiber-Optic Systems

Alireza Sheikh, Alexandre Graell i Amat, Magnus Karlsson
Optical Fiber Communication Conference 2017, p. W1J.1-
Paper in proceedings
2017

VCSEL design and integration for high-capacity optical interconnects

Anders Larsson, Johan Gustavsson, Petter Westbergh et al
Journal of Logic and Computation. Vol. 10109, p. 101090M-
Paper in proceedings
2017

Impact of Damping on 50 Gbps 4-PAM Modulation of 25G Class VCSELs

Tamas Lengyel, Krzysztof Szczerba, Emanuel Haglund et al
Journal of Lightwave Technology. Vol. 35 (19), p. 4203-4209
Journal article
2016

Sensitivity Improvements in an 850 nm VCSEL-based Link using a Two-tap Pre-emphasis Electronic Filter

Tamas Lengyel, Krzysztof Szczerba, Petter Westbergh et al
Journal of Lightwave Technology. Vol. 35 (9), p. 1633-1639
Journal article
2016

Multidimensional Modulation and Coding

Magnus Karlsson, Erik Agrell
Paper in proceedings
2016

Polarization-Mode Dispersion Aware Digital Backpropagation

Cristian Bogdan Czegledi, Gabriele Liga, Domaniç Lavery et al
42nd European Conference on Optical Communication, ECOC 2016; Dusseldorf; Germany; 18 September 2016 through 22 September 2016, p. 1091-1093
Paper in proceedings
2016

Proposed Implementation of "Non-Physical" Four-Dimensional Polarization Rotations

G. Bjork, K. Stensson, Magnus Karlsson
Journal of Lightwave Technology. Vol. 34 (14), p. 3317-3322
Journal article
2016

Frequency-Comb Regeneration for Self-Homodyne Superchannels

Abel Lorences Riesgo, Tobias Eriksson, Attila Fülöp et al
Journal of Lightwave Technology. Vol. 34 (8), p. 1800-1806
Journal article
2016

Self-homodyne 24×32-QAM superchannel receiver enabled by all-optical comb regeneration using Brillouin amplification

Abel Lorences Riesgo, Mikael Mazur, Tobias Eriksson et al
Optics Express. Vol. 24 (26), p. 29714-29723
Journal article
2016

Polarization Drift Channel Model for Coherent Fibre-Optic Systems

Cristian Bogdan Czegledi, Magnus Karlsson, Erik Agrell et al
Scientific Reports. Vol. 6, p. 21217-
Journal article
2016

Roadmap of optical communications

Erik Agrell, Magnus Karlsson, A. R. Chraplyvy et al
Journal of Optics. Vol. 18 (6)
Journal article
2016

Achievable Rates Comparison for Phase-Conjugated Twin-Waves and PM-QPSK

Tobias Eriksson, Abel Lorences Riesgo, Pontus Johannisson et al
21st OptoElectronics and Communications Conference, OECC 2016 - Held Jointly with 2016 International Conference on Photonics in Switching, PS 2016, Niigata, Japan, 3-7 July 2016, p. TuB3-3
Paper in proceedings
2016

Self-homodyne 24×32-QAM superchannel receiver enabled by all-optical comb regeneration using Brillouin amplification

Abel Lorences Riesgo, Mikael Mazur, Tobias Eriksson et al
Optics Express. Vol. 24 (26), p. 29714-29723
Journal article
2016

Multidimensional modulation formats for optical communication

Magnus Karlsson
Paper in proceedings
2016

Power Consumption of a Minimal-DSP Coherent Link with a Polarization Multiplexed Pilot-Tone

Lars Lundberg, Christoffer Fougstedt, Per Larsson-Edefors et al
Paper in proceedings
2016

Impact of 4D Channel Distribution on the Achievable Rates in Coherent Optical Communication Experiments

Tobias Eriksson, Tobias Fehenberger, Peter Andrekson et al
Journal of Lightwave Technology. Vol. 34 (9), p. 2256-2266
Journal article
2016

Modulation Format Independent Joint Polarization and Phase Tracking for Coherent Receivers

Cristian Bogdan Czegledi, Erik Agrell, Magnus Karlsson et al
Journal of Lightwave Technology. Vol. 13 (14), p. 3354-3364
Journal article
2016

Implementation of an optical fiber frequency distribution via commercial DWDM

Sven-Christian Ebenhag, M. Zelan, Per Olof E Hedekvist et al
2016 IEEE International Frequency Control Symposium, IFCS 2016 - Proceedings, p. 601-602
Paper in proceedings
2016

Transmission Systems With Low Noise Phase-Sensitive Parametric Amplifiers

Magnus Karlsson
Journal of Lightwave Technology. Vol. 34 (5), p. 1411-1423
Journal article
2016

Regenerator site selection in impairment-aware elastic optical networks

Madushanka Nishan Dharmaweera, Li Yan, Magnus Karlsson et al
Paper in proceedings
2016

Dispersion Compensation FIR Filter with Improved Robustness to Coefficient Quantization Errors

Alireza Sheikh, Christoffer Fougstedt, Alexandre Graell i Amat et al
Journal of Lightwave Technology. Vol. 34 (22), p. 5110-5117
Journal article
2016

Nonlinear-Impairments- and Crosstalk-Aware Resource Allocation Schemes for Multicore-Fiber-based Flexgrid Networks

Madushanka Nishan Dharmaweera, Li Yan, Magnus Karlsson et al
Paper in proceedings
2016

Polarization Drift Channel Model for Coherent Fibre-Optic Systems

Cristian Bogdan Czegledi, Magnus Karlsson, Erik Agrell et al
Scientific Reports. Vol. 6, p. 21217-
Journal article
2016

94-Gb/s 4-PAM Using an 850-nm VCSEL, Pre-Emphasis, and Receiver Equalization

Krzysztof Szczerba, Tamas Lengyel, Magnus Karlsson et al
IEEE Photonics Technology Letters. Vol. 28 (22), p. 2519-2521
Journal article
2016

Sensitivity Improvements in an 850 nm VCSEL-based Link using a Two-tap Pre-emphasis Electronic Filter

Tamas Lengyel, Krzysztof Szczerba, Petter Westbergh et al
Journal of Lightwave Technology. Vol. 35 (9), p. 1633-1639
Journal article
2016

Traffic-grooming- and multipath-routing-enabled impairment-aware elastic optical networks

Madushanka Nishan Dharmaweera, J. Zhao, Li Yan et al
Journal of Optical Communications and Networking. Vol. 8 (2), p. 58-70
Journal article
2016

Mitigation of nonlinear distortion in hybrid Raman/phase-sensitive amplifier links

Henrik Eliasson, Samuel L I Olsson, Magnus Karlsson et al
Optics Express. Vol. 24 (2), p. 888-900
Journal article
2016

Multidimensional Optimized Optical Modulation Formats

Magnus Karlsson, Erik Agrell
Enabling Technologies for High Spectral-efficiency Coherent Optical Communication Networks, Ch. 2, p. 13-64
Chapter in monograph, book - peer reviewed
2016

Measurement of Temperature-Induced Polarization Drift and Correlation in a 7-Core Fiber

Mikael Mazur, T. F. Taunay, Tommy Geisler et al
ECOC 2016; 42nd European Conference on Optical Communication (W.1.B.2), p. 458-460
Paper in proceedings
2016

Demonstration of Ultra Wideband Phase-Sensitive Fiber Optical Parametric Amplifier

Rohit Malik, Ales Kumpera, Magnus Karlsson et al
IEEE Photonics Technology Letters. Vol. 28 (2), p. 175-177
Journal article
2016

Highly Nonlinear Few-Mode Fiber for Optical Parametric Amplification

Seyedeh Bentolhoda Nazemosadat Arsanjani, Abel Lorences Riesgo, Magnus Karlsson et al
42nd European Conference on Optical Communication, ECOC 2016; Dusseldorf; Germany; 18 September 2016 through 22 September 2016, p. W.4.P1.SC1.7-
Paper in proceedings
2016

Improved Achievable Information Rates by Optimized Four-Dimensional Demappers in Optical Transmission Experiments

Tobias Fehenberger, Tobias Eriksson, Alex Alvarado et al
Paper in proceedings
2016

Multidimensional modulation formats for coherent optical communications

Tobias Eriksson, Erik Agrell, Magnus Karlsson
Journal of Logic and Computation (977403)
Conference contribution
2016

Demonstration of a 71.8 Gbps 4-PAM 850 nm VCSEL-based Link with a Pre-emphasizing Passive Filter

Tamas Lengyel, Krzysztof Szczerba, Magnus Karlsson et al
Paper in proceedings
2016

Experimental Analysis of Correlations in the Nonlinear Phase Noise in Optical Fiber Systems

Tobias Fehenberger, Mikael Mazur, Tobias Eriksson et al
ECOC 2016; 42nd European Conference on Optical Communication (W.1.D.4), p. 488-490
Paper in proceedings
2016

Coherent optical two-way frequency transfer in a commercial DWDM network

Sven-Christian Ebenhag, M. Zelan, Per Olof E Hedekvist et al
47th Annual Precise Time and Time Interval Systems and Applications Meeting, PTTI 2016; Hyatt Regency MontereyMonterey; United States; 25 January 2016 through 28 January 2016, p. 116-120
Paper in proceedings
2016

Quadrature decomposition of a 20 Gbaud 16-QAM signal into 2×4-PAM signals

Abel Lorences Riesgo, Tobias Eriksson, Mikael Mazur et al
42nd European Conference on Optical Communication, ECOC 2016; Dusseldorf; Germany; 18 September 2016 through 22 September 2016, p. 220-222
Paper in proceedings
2016

Polarization-Independent Phase-Sensitive Amplification

Abel Lorences Riesgo, Peter Andrekson, Magnus Karlsson
Journal of Lightwave Technology. Vol. 34 (13), p. 3171-3180
Journal article
2016

Quadrature decomposition of a 16 QAM signal into 2×4 PAM signals

Abel Lorences Riesgo, Tobias Eriksson, Mikael Mazur et al
Paper in proceedings
2015

Phase-Sensitive Amplified Transmission Links for Improved Sensitivity and Nonlinearity Tolerance

Samuel L I Olsson, William Corcoran, Carl Peter Lundström et al
Journal of Lightwave Technology. Vol. 33 (3), p. 710-721
Journal article
2015

Dispersion Compensation Filter Design Optimized for Robustness and Power Efficiency

Alireza Sheikh, Christoffer Fougstedt, Alexandre Graell i Amat et al
Signal Processing in Photonics Communications, SPPCom 2015; Boston, MA; United States; 27 June 2015 through 1 July 2015, p. SpT3D.2-
Paper in proceedings
2015

Impact of Forward Error Correction on Energy Consumption of VCSEL-based Transmitters

Krzysztof Szczerba, Christoffer Fougstedt, Per Larsson-Edefors et al
Paper in proceedings
2015

Four-Dimensional Estimates of Mutual Information in Coherent Optical Communication Experiments

Tobias Eriksson, Tobias Fehenberger, Norbert Hanik et al
Paper in proceedings
2015

Transmission systems with low noise phase sensitive parametric amplifiers

Magnus Karlsson
41st European Conference on Optical Communication, ECOC 2015, Valencia, Spain, 27 September - 1 October 2015, p. Tu.3.2.1-
Paper in proceedings
2015

Power Consumption of Hybrid EDFA/Raman Amplified Systems

Lars Lundberg, Pontus Johannisson, Erik Agrell et al
Paper in proceedings
2015

Phase-sensitive fiber-based parametric all-optical switch

Josué Amílcar Parra Cetina, Peter Andrekson, Ales Kumpera et al
Optics Express. Vol. 23 (26), p. 33426-33436
Journal article
2015

Energy Efficiency of VCSELs in the Context of Short-Range Optical Links.

Krzysztof Szczerba, Petter Westbergh, Johan Gustavsson et al
IEEE Photonics Technology Letters. Vol. 27 (16), p. 1749-1752
Journal article
2015

Phase-Sensitive Amplification of 28 GBaud DP-QPSK Signal

Abel Lorences Riesgo, Tobias Eriksson, Carl Peter Lundström et al
2015 Optical Fiber Communications Conference and Exhibition, OFC 2015, Los Angeles, United States, 22-26 March 2015, p. 7122090-
Paper in proceedings
2015

Mitigation of nonlinearities using conjugate data repetition

Henrik Eliasson, Pontus Johannisson, Magnus Karlsson et al
Optics Express. Vol. 23 (3), p. 2392-2402
Journal article
2015

Experimental Investigation of a Four-Dimensional 256-ary Lattice-based Modulation Format

Tobias Eriksson, Saleem Alreesh, Carsten Schmidt-Langhorst et al
2015 Optical Fiber Communications Conference and Exhibition, OFC 2015, Los Angeles, United States, 22-26 March 2015, p. 7122133-
Paper in proceedings
2015

Long-Haul Optical Transmission Using In-Line Phase-Sensitive Amplifiers

Samuel L I Olsson, Magnus Karlsson, Peter Andrekson
Paper in proceedings
2015

Fast and robust chromatic dispersion estimation based on temporal auto-correlation after digital spectrum superposition

SC Yao, Tobias Eriksson, S Fu et al
Optics Express. Vol. 23 (12), p. 15418-15430
Journal article
2015

Nonlinear phase noise mitigation in phase-sensitive amplified transmission systems

Samuel L I Olsson, Magnus Karlsson, Peter Andrekson
Optics Express. Vol. 23 (9), p. 11724-11740
Journal article
2015

Phase-Sensitive Amplified Transmission Links for Improved Sensitivity and Nonlinearity Tolerance

Samuel L I Olsson, William Corcoran, Carl Peter Lundström et al
Journal of Lightwave Technology. Vol. 33 (3), p. 710-721
Journal article
2015

Experimental Investigation of Crosstalk Penalties in Multicore Fiber Transmission Systems

Tobias Eriksson, Benjamin Puttnam, R. S. Luis et al
IEEE Photonics Journal. Vol. 7 (1)
Journal article
2015

Frequency-Comb Regeneration for Self-Homodyne Superchannels

Abel Lorences Riesgo, Tobias Eriksson, Attila Fülöp et al
41st European Conference on Optical Communication, ECOC 2015, Valencia, Spain, 27 September - 1 October 2015, p. paper We.3.6.2-
Paper in proceedings
2015

Two-way coherent frequency transfer in a commercial DWDM communication network in Sweden

Sven-Christian Ebenhag, M. Zelan, Per Olof E Hedekvist et al
2015 Joint Conference of the IEEE International Frequency Control Symposium and the European Frequency and Time Forum, FCS 2015 - Proceedings, p. 276-279
Paper in proceedings
2015

70 Gbps 4-PAM and 56 Gbps 8-PAM Using an 850 nm VCSEL

Krzysztof Szczerba, Petter Westbergh, Magnus Karlsson et al
Journal of Lightwave Technology. Vol. 33 (7), p. 1395-1401
Journal article
2015

Sensitivity improvements in an 850 nm VCSEL transmitter using a one-tap pre-emphasis electronic filter

Tamas Lengyel, Krzysztof Szczerba, Petter Westbergh et al
Paper in proceedings
2015

Influence of Behavioral Models on Multiuser Channel Capacity

Erik Agrell, Magnus Karlsson
Journal of Lightwave Technology. Vol. 33 (17), p. 3507-3515
Journal article
2015

Symbol-by-Symbol Joint Polarization and Phase Tracking in Coherent Receivers

Cristian Bogdan Czegledi, Erik Agrell, Magnus Karlsson
Paper in proceedings
2015

Coherent transmission channels as 4d rotations

Magnus Karlsson, Cristian Bogdan Czegledi, Erik Agrell
Signal Processing in Photonic Communications, SPPCom 2015; Omni Parker HouseBoston; United States; 27 June 2015 through 1 July 2015, p. SpM3E.2-
Paper in proceedings
2015

Single parity check-coded 16QAM over spatial superchannels in multicore fiber transmission

Tobias Eriksson, R. S. Luis, Benjamin Puttnam et al
Optics Express. Vol. 23 (11), p. 14569-14582
Journal article
2015

On the impact of carrier phase estimation on phase correlations in coherent fiber transmission

Tobias Fehenberger, Norbert Hanik, Tobias Eriksson et al
2015 Tyrrhenian International Workshop on Digital Communications, TIWDC 2015, p. 35-38
Paper in proceedings
2014

K-Over-L Multidimensional Position Modulation

Tobias Eriksson, Pontus Johannisson, Benjamin Puttnam et al
Journal of Lightwave Technology. Vol. 32 (12), p. 2254-2262
Journal article
2014

Energy efficient modulation formats for multi-core fibers

Benjamin Puttnam, J.-M. Delgado Mendinueta, R. S. Luis et al
19th OptoElectronics and Communications Conference, OECC 2014 and the 39th Australian Conference on Optical Fibre Technology, ACOFT 2014; Melbourne, VIC; Australia; 6 - 10 Jul. 2014, p. 694-696
Paper in proceedings
2014

Experimental analysis of degenerate vector phase-sensitive amplification

Abel Lorences Riesgo, Fabrizio Chiarello, Carl Peter Lundström et al
Optics Express. Vol. 22 (18), p. 21889-21902
Journal article
2014

Coded Modulation for Fiber-Optic Networks

Lotfollah Beygi, Erik Agrell, J. M. Kahn et al
IEEE Signal Processing Magazine
Journal article
2014

Modulation formats for multi-core fiber transmission

Benjamin Puttnam, Tobias Eriksson, J.M. Delgado Mendinueta et al
Optics Express. Vol. 22 (26), p. 32457-32469
Journal article
2014

Noise beating in hybrid phase-sensitive amplifier systems

William Corcoran, Rohit Malik, Samuel L I Olsson et al
Optics Express. Vol. 22 (5), p. 5762-5771
Journal article
2014

Experimental comparison of PS-QPSK and LDPC-coded PM-QPSK with equal spectral efficiency in WDM transmission

Tobias Eriksson, Pontus Johannisson, Erik Agrell et al
2014 European Conference on Optical Communication, ECOC 2014; Cannes; France; 21 September 2014 through 25 September 2014, p. Art. no. 6964035-
Paper in proceedings
2014

Optical signal to noise ratio improvement through unbalanced noise beating in phase-sensitive parametric amplifiers

Rohit Malik, Ales Kumpera, Samuel L I Olsson et al
Optics Express. Vol. 22 (9), p. 10477-10486
Journal article
2014

Comparison between Coherent Superposition in DSP and PSA for Mitigation of Nonlinearities in a Single-span Link

Henrik Eliasson, Samuel L I Olsson, Magnus Karlsson et al
European Conference on Optical Communication, ECOC 2014; Cannes; France; 21 September 2014 through 25 September 2014, p. Art. no. 6964015-
Paper in proceedings
2014

CMA-Based CD and DGD Estimation in Presence of Experimental Higher Order PMD

Daniel Zakrisson, Magnus Karlsson, Pontus Johannisson
European Conference on Optical Communication, ECOC 2014; Cannes; France; 21 September 2014 through 25 September 2014, p. P.3.16-
Paper in proceedings
2014

Frequency-resolved noise figure measurements of phase (in)sensitive fiber optical parametric amplifiers

Rohit Malik, Ales Kumpera, Abel Lorences Riesgo et al
Optics Express. Vol. 22 (23), p. 27821-27832
Journal article
2014

Phase-Sensitive Amplification and Regeneration of Dual-Polarization BPSK without Polarization Diversity

Abel Lorences Riesgo, Carl Peter Lundström, Fabrizio Chiarello et al
2014 European Conference on Optical Communication, ECOC 2014; Cannes; France; 21 September 2014 through 25 September 2014, p. Art. no. 6964045-
Paper in proceedings
2014

Capacity of a nonlinear optical channel with finite memory

Erik Agrell, Alex Alvarado, Giuseppe Durisi et al
Journal of Lightwave Technology. Vol. 32 (16), p. 2862-2876
Journal article
2014

Long-Haul (3465 km) Transmission of a 10 GBd QPSK Signal with Low Noise Phase-Sensitive In-Line Amplification

Samuel L I Olsson, Carl Peter Lundström, Magnus Karlsson et al
European Conference on Optical Communication, ECOC 2014; Cannes; France; 21 September 2014 through 25 September 2014, p. Paper PD.2.2-
Paper in proceedings
2014

70 Gbps 4-PAM and 56 Gbps 8-PAM using an 850 nm VCSEL

Krzysztof Szczerba, Petter Westbergh, Magnus Karlsson et al
2014 European Conference on Optical Communication, ECOC 2014; Cannes; France; 21 September 2014 through 25 September 2014, p. Art. no. 6963923-
Paper in proceedings
2014

Four-dimensional coherent signalling - Constellations and rotations

Magnus Karlsson
2014 OptoElectronics and Communication Conference, OECC 2014 and Australian Conference on Optical Fibre Technology, ACOFT 2014, p. 138-140
Paper in proceedings
2014

Four-Dimensional Modulation Formats for Long-Haul Transmission

Pontus Johannisson, Martin E Sjödin, Tobias Eriksson et al
Optical Fiber Communication Conference, OFC 2014; San Francisco; United States; 9 March 2014 through 13 March 2014, p. Art. no. 6886527-
Paper in proceedings
2014

Record-high sensitivity receiver using phase sensitive fiber optical parametric amplification

Rohit Malik, Samuel L I Olsson, Peter Andrekson et al
Technical Digest Series: Optical Fiber Communication Conference, OFC 2014; San Francisco, CA; United States; 9 March 2014 through 13 March 2014, p. Art. no. 6886736-
Paper in proceedings
2014

Linear and nonlinear transmission of 16-QAM over 105 km phase-sensitive amplified link

Samuel L I Olsson, Tobias Eriksson, Carl Peter Lundström et al
Technical Digest Series: Optical Fiber Communication Conference, OFC 2014; San Francisco, CA; United States; 9 March 2014 through 13 March 2014
Paper in proceedings
2014

Four-dimensional Rotations in Coherent Optical Communications

Magnus Karlsson
Journal of Lightwave Technology. Vol. 32 (6), p. 1246-1257
Journal article
2014

Rate-Adaptive Coded Modulation for Fiber-Optic Communications

Lotfollah Beygi, Erik Agrell, J. M. Kahn et al
Journal of Lightwave Technology. Vol. 32 (2), p. 333-343
Journal article
2014

Spectrum Superposition Based Chromatic Dispersion Estimation for Digital Coherent Receivers

Yao Shuchang, Tobias Eriksson, S Fu et al
European Conference on Optical Communication, ECOC 2014; Cannes; France; 21 September 2014 through 25 September 2014, p. P.3.17-
Paper in proceedings
2014

Biorthogonal modulation in 8 dimensions experimentally implemented as 2PPM-PS-QPSK

Tobias Eriksson, Pontus Johannisson, Erik Agrell et al
Technical Digest Series: Optical Fiber Communication Conference, OFC 2014; San Francisco, CA; United States; 9 March 2014 through 13 March 2014, p. Art. no. 6886984-
Paper in proceedings
2014

Quadrature demultiplexing using a degenerate vector parametric amplifier

Abel Lorences Riesgo, Lan Liu, Samuel L I Olsson et al
Optics Express. Vol. 22 (24), p. 29424-29434
Journal article
2014

A Low-Complexity Detector for Memoryless Polarization-Multiplexed Fiber-Optical Channels

Christian Häger, Lotfollah Beygi, Erik Agrell et al
IEEE Communications Letters. Vol. 18 (2), p. 368-371
Journal article
2013

Experimental Demonstration of 128-SP-QAM in Uncompensated Long-Haul Transmission

Tobias Eriksson, Martin E Sjödin, Peter Andrekson et al
2012 Optical Fiber Communication Conference and Exposition and the National Fiber Optic Engineers Conference, OFC/NFOEC 2013, Anaheim, 17-21 March 2013, p. OTu3B.2-
Paper in proceedings
2013

Comparison of Intersymbol Interference Power Penalties for OOK and 4-PAM in Short-Range Optical Links

Krzysztof Szczerba, Petter Westbergh, Erik Agrell et al
Journal of Lightwave Technology. Vol. 31 (22), p. 3525-3534
Journal article
2013

Subset-Optimized Polarization-Multiplexed PSK for Fiber-Optic Communications

Martin E Sjödin, Erik Agrell, Magnus Karlsson
IEEE Communications Letters. Vol. 17 (5), p. 838-840
Journal article
2013

Comparison of 128-SP-QAM and PM-16QAM in long-haul WDM transmission

Tobias Eriksson, Martin E Sjödin, Pontus Johannisson et al
Optics Express. Vol. 21 (16), p. 19269-19279
Journal article
2013

Schmidt decompositions of parametric processes I: Basic theory and simple examples

Colin McKinstrie, Magnus Karlsson
Optics Express. Vol. 21 (2), p. 1374-1394
Journal article
2013

Fiber-optic Parametric Amplifiers Without Pump Dithering

Carl Peter Lundström, Rohit Malik, Abel Lorences Riesgo et al
Workshop on Specialty Optical Fibers and their Applications 2013, p. W3.12-
Conference poster
2013

Injection locking-based pump recovery for phase-sensitive amplified links

Samuel L I Olsson, William Corcoran, Carl Peter Lundström et al
Optics Express. Vol. 21 (12), p. 14512-14529
Journal article
2013

Phase-Sensitive Amplifiers for Optical Links

Carl Peter Lundström, Samuel L I Olsson, William Corcoran et al
Optical Fiber Communications Conference (OFC), p. OW3C.5-
Paper in proceedings
2013

Schmidt decompositions of parametric processes II: Vector four-wave mixing

Colin McKinstrie, J. R. Ott, Magnus Karlsson
Optics Express. Vol. 21 (9), p. 11009-11020
Journal article
2013

35.2 Gbps 8-PAM transmission over 100 m of MMF using an 850 nm VCSEL

Krzysztof Szczerba, Magnus Karlsson, Peter Andrekson et al
Proc. European Conference on Optical Communication (ECOC) (622 CP), p. 744-746
Paper in proceedings
2013

WDM channel capacity and its dependence on multichannel adaptation models

Erik Agrell, Magnus Karlsson
Paper in proceedings
2013

Intersymbol interference penalties for OOK and 4-PAM in short-range optical communications

Krzysztof Szczerba, Magnus Karlsson, Peter Andrekson et al
Paper in proceedings
2013

Fiber optic parametric amplifier with 10-dB net gain without pump dithering

Carl Peter Lundström, Rohit Malik, Lars Gruner-Nielsen et al
IEEE Photonics Technology Letters. Vol. 25 (3), p. 234-237
Journal article
2013

Demonstration of Degenerate Vector Phase-Sensitive Amplification

Abel Lorences Riesgo, Carl Peter Lundström, Magnus Karlsson et al
Optical Communication (ECOC 2013), 39th European Conference and Exhibition on (622 CP), p. 492-494
Paper in proceedings
2013

Experimental Demonstration of an Optimized 16-ary Four-Dimensional Modulation Format Using Optical OFDM

Johnny Karout, Xiang Liu, S Chandrasekhar et al
Optical Fiber Communication Conference, OCF 13, p. OW3B.4-
Paper in proceedings
2013

Practical Detection Schemes for Power Efficient Modulation Formats

Pontus Johannisson, Magnus Karlsson
Advanced Photonics Congress (SPPCom) 2013 (SPM3D.4)
Paper in proceedings
2013

Long-Haul Transmission of PM-2PPM-QPSK at 42.8 Gbit/s

Martin E Sjödin, Tobias Eriksson, Peter Andrekson et al
Paper in proceedings
2013

MCRB for Timing and Phase Offset for Low-Rate Optical Communication with Self-Phase Modulation

Debarati Sen, Henk Wymeersch, Naga Vishnukanth Irukulapati et al
IEEE Communications Letters. Vol. 17 (5), p. 1004-1007
Journal article
2013

Focus issue introduction: Nonlinear optics 2013

J. I. Dadap, Magnus Karlsson, N. C. Panoiu
Optics Express. Vol. 21 (25), p. 31176-31178
Journal article
2013

60 Gbits error-free 4-PAM operation with 850 nm VCSEL

Krzysztof Szczerba, Petter Westbergh, Magnus Karlsson et al
Electronics Letters. Vol. 49 (15), p. 953-955
Journal article
2013

Frequency and polarization switched QPSK

Tobias Eriksson, Pontus Johannisson, Martin E Sjödin et al
39th European Conference and Exhibition on Optical Communication, ECOC 2013; London; United Kingdom; 22 September 2013 through 26 September 2013 (622 CP), p. 816-818
Paper in proceedings
2013

High-Speed 850 nm Quasi-Single Mode VCSELs for Extended Reach Optical Interconnects

Rashid Safaisini, Krzysztof Szczerba, Petter Westbergh et al
Journal of Optical Communications and Networking. Vol. 5 (7), p. 686-695
Journal article
2013

Methodology for Power-Aware Coherent Receiver Design

Tauseef Ahmad, Yun Ai, Pavithra Muralidharan et al
Advanced Photonics Congress (SPPCom) 2013, p. SPT4D.4-
Paper in proceedings
2013

Transmitter mask testing for 28 GBaud PM-QPSK

Henrik Eliasson, Pontus Johannisson, Henrik Sunnerud et al
Optical Communication (ECOC 2013), 39th European Conference and Exhibition on, p. 282 - 284
Paper in proceedings
2013

Perturbation Analysis of Nonlinear Propagation in a Strongly Dispersive Optical Communication System

Pontus Johannisson, Magnus Karlsson
Journal of Lightwave Technology. Vol. 31 (8), p. 1273-1282
Journal article
2013

On nonlinearly-induced noise in single-channel optical links with digital backpropagation

Lotfollah Beygi, Naga Vishnukanth Irukulapati, Erik Agrell et al
Optics Express. Vol. 21 (22), p. 26376-26386
Journal article
2013

Mitigation of Nonlinear Impairments on QPSK Data in Phase-Sensitive Amplified Links

William Corcoran, Samuel L I Olsson, Carl Peter Lundström et al
39th European Conference on Optical Communication and Exhibition, ECOC 2013, London, 22-26 September 2013 (622 CP), p. 486-488
Paper in proceedings
2013

Idler chirp optimization in a pulse-pumped parametric amplifier

Andreas Wiberg, Zhi Tong, E. Myslivets et al
2013 IEEE Photonics Society Summer Topical Meeting Series, PSSTMS 2013, p. 159-160
Paper in proceedings
2012

Transmission of 3×224 Gbit/s DP-16QAM signals with (up to) 7.2 bit/s/Hz spectral efficiency in SMF-EDFA links

Ekawit Tipsuwannakul, Jianqiang Li, Tobias Eriksson et al
2012 Optical Fiber Communication Conference and Exposition and the National Fiber Optic Engineers Conference, OFC/NFOEC 2012, Los Angeles, CA, 4 March through 8 March 2012, p. Art. no. 6192199-
Paper in proceedings
2012

Mitigation of Fiber Bragg Grating-Induced Group-Delay Ripple in 112 Gbit/s DP-QPSK Coherent Systems

Ekawit Tipsuwannakul, Jianqiang Li, Tobias Eriksson et al
Paper in proceedings
2012

Optical Injection-Locking-Based Pump Recovery for Phase-Sensitively Amplified Links

Samuel L I Olsson, William Corcoran, Carl Peter Lundström et al
2012 Optical Fiber Communication Conference and Exposition and the National Fiber Optic Engineers Conference, OFC/NFOEC 2012, Los Angeles, 4-8 March 2012, p. Art. no. 6192145-
Paper in proceedings
2012

Phase-Sensitive Optical Pre-Amplifier Implemented in an 80km DQPSK Link

William Corcoran, Samuel L I Olsson, Carl Peter Lundström et al
2012 Optical Fiber Communication Conference and Exposition and the National Fiber Optic Engineers Conference, OFC/NFOEC 2012, Los Angeles, 4-8 March 2012, p. Art. no. 6192234-
Paper in proceedings
2012

Phase-Sensitive Amplified Optical Link Operating in the Nonlinear Transmission Regime

Samuel L I Olsson, William Corcoran, Carl Peter Lundström et al
Paper in proceedings
2012

Influence of Fiber-Bragg Grating-Induced Group-Delay Ripple in High-Speed Transmission Systems

Ekawit Tipsuwannakul, Jianqiang Li, Tobias Eriksson et al
Journal of Optical Communications and Networking. Vol. 4 (6), p. 514-521
Magazine article
2012

Tension-optimized highly nonlinear fibers for parametric applications

Carl Peter Lundström, Evgeny Myslivets, Andreas Wiberg et al
European Conference on Optical Communications (ECOC), Amsterdam, The Netherlands, p. Paper We.1.F-
Paper in proceedings
2012

Low-Complexity Duobinary Signaling and Detection for Sensitivity Improvement in Nyquist-WDM Coherent System

Jianqiang Li, Ekawit Tipsuwannakul, Magnus Karlsson et al
Paper in proceedings
2012

Optimized lattice-based 16-level subcarrier modulation for IM/DD systems

Krzysztof Szczerba, Johnny Karout, Magnus Karlsson et al
2012 38th European Conference and Exhibition on Optical Communications, ECOC 2012; Amsterdam; Netherlands; 16 September 2012 through 20 September 2012, p. Art. no. 6705904-
Paper in proceedings
2012

625 Gbit/s Superchannel Consisting of Interleaved DP-16QAM and DP-QPSK with 4.17 bit/s/Hz Spectral Efficiency

Tobias Eriksson, Ekawit Tipsuwannakul, Jianqiang Li et al
Paper in proceedings
2012

Building up low-complexity spectrally-efficient Terabit superchannels by receiver-side duobinary shaping

Jianqiang Li, Martin E Sjödin, Magnus Karlsson et al
Optics Express. Vol. 20 (9), p. 10271-10282
Journal article
2012

4-PAM for high-speed short-range optical communications

Krzysztof Szczerba, Petter Westbergh, Johnny Karout et al
Journal of Optical Communications and Networking. Vol. 4 (11), p. 885-894
Journal article
2012

Adaptive Coded Modulation for Nonlinear Fiber-Optical Channels

Lotfollah Beygi, Erik Agrell, Magnus Karlsson
2012 IEEE Globecom Workshops, Anaheim, USA, 3-7 December 2012, p. 331-335
Paper in proceedings
2012

Short-Pulse Amplification in a Phase-Sensitive Amplifier

Carl Peter Lundström, William Corcoran, Samuel L I Olsson et al
2012 Optical Fiber Communication Conference and Exposition and the National Fiber Optic Engineers Conference, OFC/NFOEC 2012, Los Angeles, 4-8 March 2012 (OTh1C.1)
Paper in proceedings
2012

Transmission of 1.936 Tb/s (11 x 176 Gb/s) DP-16QAM superchannel signals over 640 km SSMF with EDFA only and 300 GHz WSS channel

Jianqiang Li, Magnus Karlsson, Peter Andrekson et al
Optics Express. Vol. 20 (26), p. B223-B231
Journal article
2012

Ultra-low-noise, Broadband Phase-Sensitive Optical Amplifiers and Their Applications

Zhi Tong, Carl Peter Lundström, Peter Andrekson et al
IEEE Journal on Selected Topics in Quantum Electronics. Vol. 18 (2), p. 1016-1032
Journal article
2012

Exploiting the Faster-Than-Nyquist Concept in Wavelength-Division Multiplexing Systems Using Duobinary Shaping

Jianqiang Li, Ekawit Tipsuwannakul, Magnus Karlsson et al
ZTE Communications. Vol. 10 (1), p. 23-29
Journal article
2012

Phase and amplitude characteristics of a phase-sensitive amplifier operating in gain saturation

Carl Peter Lundström, William Corcoran, Magnus Karlsson et al
Optics Express. Vol. 20 (19), p. 21400-21412
Journal article
2012

Spectrally efficient four-dimensional modulation

Magnus Karlsson, Erik Agrell
2012 Optical Fiber Communication Conference and Exposition and the National Fiber Optic Engineers Conference (OFC/NFOEC), Los Angeles, CA, Mar. 4 - 8 [Invited], p. Art. no. 6192053-
Paper in proceedings
2012

Comparison of PS-QPSK and PM-QPSK at Different Data Rates in a 25 GHz-spaced WDM System

Martin E Sjödin, Benjamin Puttnam, Pontus Johannisson et al
Optical Fiber Communication Conference, OFC 2012, Los Angeles, United States, 4-8 March 2012
Paper in proceedings
2012

Experimental Characterization of a Phase-Sensitive Four-Mode Fiber-Optic Parametric Amplifier

Thomas Richter, William Corcoran, Samuel L I Olsson et al
Paper in proceedings
2012

Performance Comparisons of DP-16QAM and Duobinary-Shaped DP-QPSK for Optical Systems With 4.1 Bit/s/Hz Spectral Efficiency

Ekawit Tipsuwannakul, Jianqiang Li, Magnus Karlsson et al
Journal of Lightwave Technology. Vol. 30 (14), p. 2307-2314
Journal article
2012

Modified Cramer-Rao Bound for Clock Recovery in the Presence of Self-Phase Modulation

Ahmet Serdar Tan, Henk Wymeersch, Pontus Johannisson et al
Journal of Lightwave Technology. Vol. 30 (16), p. 2556-2562
Magazine article
2012

Optimizing Constellations for Single-Subcarrier Intensity-Modulated Optical Systems

Johnny Karout, Erik Agrell, Krzysztof Szczerba et al
IEEE Transactions on Information Theory. Vol. 58 (7), p. 4645-4659
Journal article
2012

Comparison of set-partitioned two-polarization 16qam formats with pdm-qpsk and pdm-8qam for optical transmission systems with error-correction coding

J. Renaudier, A. Voicila, O. Bertran-Pardo et al
2012 38th European Conference and Exhibition on Optical Communications, ECOC 2012; Amsterdam; Netherlands; 16 September 2012 through 20 September 2012, p. Art. no. 6706241-
Paper in proceedings
2012

1.94Tb/s (11×176Gb/s) DP-16QAM superchannel transmission over 640km EDFA-only SSMF and two 280GHz WSSs

Jianqiang Li, Magnus Karlsson, Peter Andrekson
Paper in proceedings
2012

Approaching Nyquist Limit in WDM Systems by Low-Complexity Receiver-Side Duobinary Shaping

Jianqiang Li, Ekawit Tipsuwannakul, Tobias Eriksson et al
Journal of Lightwave Technology. Vol. 30 (11), p. 1664 - 1676
Journal article
2012

The Limits of Digital Backpropagation in Nonlinear Coherent Fiber-Optical Links

Lotfollah Beygi, Erik Agrell, Pontus Johannisson et al
2012 38th European Conference and Exhibition on Optical Communications, ECOC 2012; Amsterdam; Netherlands; 16 September 2012 through 20 September 2012, p. Art. no. 6706029-
Paper in proceedings
2012

High speed VCSELs for optical interconnects

Anders Larsson, Johan Gustavsson, Åsa Haglund et al
Proc. 24th International Conference on Indium Phosphide and Related Materials, p. 269-272
Paper in proceedings
2012

Tension-optimized highly nonlinear fiber for parametric applications

Carl Peter Lundström, E. Myslivets, Andreas Wiberg et al
Paper in proceedings
2012

Transmission of PM-QPSK and PS-QPSK with different fiber span lengths

Martin E Sjödin, Benjamin Puttnam, Pontus Johannisson et al
Optics Express. Vol. 20 (7), p. 7544-7554
Journal article
2012

Comparison of 128-SP-QAM with PM-16-QAM

Martin E Sjödin, Pontus Johannisson, Jianqiang Li et al
Optics Express. Vol. 20 (8), p. 8356-8366
Journal article
2012

Tension-optimized highly nonlinear fiber for parametric applications

Carl Peter Lundström, E. Myslivets, Andreas Wiberg et al
Paper in proceedings
2012

A Discrete-Time Model for Uncompensated Single-Channel Fiber-Optical Links

Lotfollah Beygi, Erik Agrell, Pontus Johannisson et al
IEEE Transactions on Communications. Vol. 60 (11), p. 3440-3450
Journal article
2012

Comparison of 128-SP-QAM with PM-16-QAM

Martin E Sjödin, Pontus Johannisson, Jianqiang Li et al
Optics Express. Vol. 20 (8), p. 8356-8366
Journal article
2012

Satellite constellations: Towards the nonlinear channel capacity

Erik Agrell, Magnus Karlsson
25th IEEE Photonics Conference, IPC 2012, Burlingame, 23 - 27 September 2012 [Invited], p. 316-317
Paper in proceedings
2011

Phase-to-phase and phase-to-amplitude transfer characteristics of a nondegenerate-idler phase-sensitive amplifier

Carl Peter Lundström, Zhi Tong, Magnus Karlsson et al
Optics Letters. Vol. 36 (22), p. 4356-4358
Journal article
2011

Optimization of 16-point Ring Constellations in the Presence of Nonlinear Phase Noise

Lotfollah Beygi, Erik Agrell, Magnus Karlsson
Optical Fiber Communication Conference and Exposition (OFC) and The National Fiber Optic Engineers Conference (NFOEC), p. OThO4-
Paper in proceedings
2011

Power efficient modulation schemes [Invited book chapter]

Magnus Karlsson, Erik Agrell
Chapter in monograph, book - peer reviewed
2011

Comparison of polarization-switched QPSK and polarization-multiplexed QPSK at 30 Gbit/s

Martin E Sjödin, Pontus Johannisson, Henk Wymeersch et al
Optics Express. Vol. 19 (8), p. 7839-7846
Journal article
2011

Stochastic Backpropagation for Coherent Optical Communications

Nan Jiang, Yan Gong, Johnny Karout et al
European Conference and Exposition on Optical Communications, ECOC 2011; Geneva; Switzerland; 18 September 2011 through 22 September 2011
Paper in proceedings
2011

Performance Comparison of Differential 8-Ary Modulation Formats in High-Speed Optical Transmission Systems

Ekawit Tipsuwannakul, Pontus Johannisson, Mats Sköld et al
Journal of Lightwave Technology. Vol. 29 (19), p. 2954-2962
Journal article
2011

Designing Power-Efficient Modulation Formats for Noncoherent Optical Systems

Johnny Karout, Erik Agrell, Krzysztof Szczerba et al
Journal of Logic and Computation
Paper in proceedings
2011

Performance Comparison between 120 Gbit/s RZ-DQP-ASK and RZ-D8PSK over a 480 km Link

Ekawit Tipsuwannakul, Magnus Karlsson, Erik Agrell et al
Optical Fiber Communication Conference, OFC 2011; Los Angeles, CA; United States; 6 March 2011 through 10 March 2011, p. OMI5-
Paper in proceedings
2011

Signal Statistics in Fiber-Optical Channels with Polarization Multiplexing and Self-Phase Modulation

Lotfollah Beygi, Erik Agrell, Magnus Karlsson et al
Journal of Lightwave Technology. Vol. 29 (16), p. 2379 - 2386
Journal article
2011

30 Gbps 4-PAM transmission over 200m of MMF using an 850 nm VCSEL

Krzysztof Szczerba, Petter Westbergh, Johan Gustavsson et al
2011 37th European Conference on Optical Communication (ECOC); 18-22 Sept. 2011; Geneva, p. 1-3
Paper in proceedings
2011

Generalized pulse-position modulation for optical power-efficient communication

Magnus Karlsson, Erik Agrell
37th European Conference on Optical Communication and Exhibition, ECOC 2011, Geneva, 18 September 2011 through 22 September 2011
Paper in proceedings
2011

Demonstration of 8-level subcarrier modulation sensitivity improvement in an IM/DD system

Krzysztof Szczerba, Johnny Karout, Erik Agrell et al
European Conference and Exposition on Optical Communications, ECOC 2011; Geneva; Switzerland; 18 September 2011 through 22 September 2011
Paper in proceedings
2011

Modified constant modulus algorithm for polarization-switched QPSK

Pontus Johannisson, Martin E Sjödin, Magnus Karlsson et al
Optics Express. Vol. 19 (8), p. 7734-7741
Journal article
2011

Filter Optimization for Self-Homodyne Coherent WDM Systems using Interleaved Polarization Division Multiplexing

Martin E Sjödin, Erik Agrell, Pontus Johannisson et al
Journal of Lightwave Technology. Vol. 29 (9), p. 1219 - 1226
Journal article
2011

Linear and Nonlinear Crosstalk Tolerance of Polarization-Switched QPSK and Polarization-Multiplexed QPSK

Martin E Sjödin, Pontus Johannisson, Peter Andrekson et al
European Conference and Exposition on Optical Communications, ECOC 2011; Geneva; Switzerland; 18 September 2011 through 22 September 2011
Paper in proceedings
2011

Convergence Comparison of the CMA and ICA for Blind Polarization Demultiplexing

Pontus Johannisson, Henk Wymeersch, Martin E Sjödin et al
Journal of Optical Communications and Networking. Vol. 3 (6), p. 493-501
Journal article
2011

Towards the Ultra-Sensitive Optical Link Enabled by Low Noise Phase-Sensitive Amplifiers

Zhi Tong, Carl Peter Lundström, Peter Andrekson et al
Nature Photonics. Vol. 5 (7), p. 430-436
Journal article
2011

Noise performance of a frequency nondegenerate phase-sensitive amplifier with unequalized inputs

Zhi Tong, Carl Peter Lundström, Magnus Karlsson et al
Optics Letters. Vol. 36 (5), p. 722-724
Journal article
2011

An ML-based Detector for Optical Communication in the Presence of Nonlinear Phase Noise

Ahmet Serdar Tan, Henk Wymeersch, Pontus Johannisson et al
2011 IEEE International Conference on Communications, ICC 2011; Kyoto; Japan; 5 June 2011 through 9 June 2011, p. Art. no. 5962741-
Paper in proceedings
2011

Phase and Amplitude Transfer Functions of a Saturated Phase-Sensitive Parametric Amplifier

Carl Peter Lundström, William Corcoran, Zhi Tong et al
Proc. European Conference on Optical Communications (ECOC), Geneva, Switzerland, p. Th.11.LeCervin.4-
Paper in proceedings
2011

Focus issue introduction: nonlinear optics

B. Boulanger, S. T. Cundiff, D. J. Gauthier et al
Optics Express. Vol. 19 (23), p. 23561-23566
Journal article
2011

Impact of Zero-Dispersion-Wavelength Distributions on the Noise Figure Nonreciprocity of a Fiber Parametric Amplifier

Zhi Tong, Carl Peter Lundström, Magnus Karlsson et al
IEEE Photonics Technology Letters. Vol. 23 (6), p. 365-367
Magazine article
2011

Format Conversion of Optical Multilevel Signals Using FWM-Based Optical Phase Erasure

Guo-Wei Lu, Ekawit Tipsuwannakul, T. Miyazaki et al
Journal of Lightwave Technology. Vol. 29 (16), p. 2460-2466
Journal article
2011

Multilevel pulse-position modulation for optical power-efficient communication

Magnus Karlsson, Erik Agrell
Optics Express. Vol. 19 (26), p. B799-B804
Journal article
2011

A Blind Phase Stabilization Algorithm for Parallel Coherent Receivers

Pontus Johannisson, Christophe Gosset, Magnus Karlsson
Journal of Lightwave Technology. Vol. 29 (24), p. 3737-3743
Journal article
2011

Higher-capacity communication links based on two-mode phase-sensitive amplifiers

Colin McKinstrie, N. Alic, Zhi Tong et al
Optics Express. Vol. 19 (13), p. 11977-11991
Journal article
2011

Experimental comparison of modulation formats in IM/DD links

Krzysztof Szczerba, Johnny Karout, Petter Westbergh et al
Optics Express. Vol. 19 (10), p. 9881-9889
Journal article
2011

On the symbol error probability of regular polytopes

Erik Agrell, Magnus Karlsson
IEEE Transactions on Information Theory. Vol. 57 (6), p. 3411-3415
Journal article
2011

A Modified CMA for PS-QPSK

Pontus Johannisson, Martin E Sjödin, Magnus Karlsson
Advanced Photonics, Signal Processing in Photonic Communications, p. SPTuB3-
Paper in proceedings
2011

CMA Misconvergence in Coherent Optical Communication for Signals Generated from a Single PRBS

Johnny Karout, Henk Wymeersch, Ahmet Serdar Tan et al
Paper in proceedings
2011

Measurement of the Phase Noise Tracking Capability of a Digital Coherent Receiver

Martin E Sjödin, Henk Wymeersch, Pontus Johannisson et al
European Conference and Exposition on Optical Communications, ECOC 2011; Geneva; Switzerland; 18 September 2011 through 22 September 2011
Paper in proceedings
2011

30 Gbps 4-PAM transmission over 200m of MMF using an 850 nm VCSEL

Krzysztof Szczerba, Petter Westbergh, Johnny Karout et al
Optics Express. Vol. 19 (26), p. B203-B208
Journal article
2010

Joint Statistics and MLSD in Filtered Incoherent High-Speed Fiber-Optic Communications

N. Alic, Magnus Karlsson, Mats Sköld et al
Journal of Lightwave Technology. Vol. 28 (10), p. 1564-1572
Journal article
2010

Full characterization of the signal and idler noise figure spectra in single-pumped fiber optical parametric amplifiers

Zhi Tong, Adonis Bogris, Magnus Karlsson et al
Optics Express. Vol. 18 (3), p. 2884-2893
Journal article
2010

Bandwidth-efficient phase modulation techniques for Stimulated Brillouin Scattering suppression in fiber optic parametric amplifiers

J. B. Coles, B. P.-P. Kuo, N. Alic et al
Optics Express. Vol. 18 (17), p. 18138-18150
Journal article
2010

Convergence Comparison of CMA and ICA for Blind Polarization Demultiplexing of QPSK and 16-QAM Signals

Pontus Johannisson, Henk Wymeersch, Martin E Sjödin et al
Paper in proceedings
2010

Impact of cross-phase modulation in coherent transmission systems

Magnus Karlsson
IEEE Photonics Society Summer Topical Meeting Series, 2010, p. 127 -128
Paper in proceedings
2010

Raman-Induced Asymmetric Pump Noise Transfer in Fiber-Optical Parametric Amplifiers

Zhi Tong, Adonis Bogris, Magnus Karlsson et al
IEEE Photonics Technology Letters. Vol. 22 (6), p. 386-388
Journal article
2010

Format Conversion From 120-Gb/s RZ-D8PSK to 80-Gb/s RZ-DQPSK Through FWM-Based Optical Phase Erasure

Guo-Wei Lu, Ekawit Tipsuwannakul, Carl Peter Lundström et al
IEEE Photonics Technology Letters. Vol. 22 (24), p. 1817-1819
Journal article
2010

Experimental Characterization of the Phase Squeezing Properties of a Phase-Sensitive Parametric Amplifier in Non-Degenerate Idler Configuration

Carl Peter Lundström, Benjamin Puttnam, Zhi Tong et al
Proc. European Conference on Optical Communications (ECOC), p. Th.10.C.1-
Paper in proceedings
2010

Noise performance of optical fiber transmission links that use non-degenerate cascaded phase-sensitive amplifiers

Zhi Tong, Colin McKinstrie, Carl Peter Lundström et al
Optics Express. Vol. 18 (15), p. 15426-15439
Journal article
2010

OSNR Requirements for Self-Homodyne Coherent Systems

Martin E Sjödin, Pontus Johannisson, Zhi Tong et al
IEEE Photonics Technology Letters. Vol. 22 (2), p. 91-93
Journal article
2010

37 Gbps transmission over 200 m of MMF using single cycle subcarrier modulation and a VCSEL with 20 GHz modulation bandwidth

Krzysztof Szczerba, Bengt-Erik Olsson, Petter Westbergh et al
2010 36th European Conference and Exhibition on Optical Communication (ECOC). Vol. 1-2, p. 1-3
Paper in proceedings
2010

Field-quadrature and photon-number correlations produced by parametric processes

Colin McKinstrie, Magnus Karlsson, Zhi Tong
Optics Express. Vol. 18 (19), p. 19792-19823
Journal article
2010

Operational Regime of Symbol-by-Symbol Phase Noise Estimation for POLMUX 16-QAM

Fangrong Peng, Henk Wymeersch, Ahmet Serdar Tan et al
Paper in proceedings
2010

Full Characterization of Noise Figure Spectrum in a Single Pumped Fiber Optical Parametric Amplifiers

Zhi Tong, Adonis Bogris, Magnus Karlsson et al
Optical Fiber Communication Conference, OFC 2010; San Diego, CA; United States; 21 March 2010 through 25 March 2010, p. OWT5-
Paper in proceedings
2010

Noise Figure Measurement in Phase-Insensitive and Phase-Sensitive Fiber Parametric Amplifier Cascade

Zhi Tong, Adonis Bogris, Carl Peter Lundström et al
OFC'2010, p. OWT4-
Paper in proceedings
2010

Increasing up to 7 times the stability of passively mode-locked fiber ring laser by introducing in the cavity a certain length of dispersion compensating fiber

Ionut Romeo Schiopu, Magnus Karlsson, Magnus Karlsson
Journal of Logic and Computation. Vol. 7821, p. Article number 78210D -
Paper in proceedings
2010

Detailed characterization of a 
fiber-optic parametric amplifier in phase-sensitive and phase-insensitive operation

Joseph Kakande, Carl Peter Lundström, Peter Andrekson et al
Optics Express. Vol. 18 (5), p. 4130-4137
Journal article
2010

Interleaved Polarization Division Multiplexing in Self-Homodyne Coherent WDM Systems

Martin E Sjödin, Erik Agrell, Guo-Wei Lu et al
Paper in proceedings
2010

A novel multilevel coded modulation scheme for fiber optical channel with nonlinear phase noise

Lotfollah Beygi, Erik Agrell, Pontus Johannisson et al
Paper in proceedings
2010

Investigation of Transmission Impairments of 40-Gbaud, Two-, Four-, and Eight-Level RZ-DPSK

Ekawit Tipsuwannakul, Magnus Karlsson, Peter Andrekson
IEEE Photonics Technology Letters. Vol. 22 (18), p. 1376-1378
Magazine article
2010

A novel rate allocation method for multilevel coded modulation

Lotfollah Beygi, Erik Agrell, Magnus Karlsson et al
International symposium on information theory, p. 1983-1987
Paper in proceedings
2010

Influence of self- and cross-phase modulation on 40 Gbaud dual polarization DQPSK/D8PSK signals in 10 Gbit/s OOK WDM systems

Ekawit Tipsuwannakul, M.N. Chughtai, Marco Forzati et al
Optics Express. Vol. 18 (23), p. 24178-24188
Journal article
2010

Four-Dimensional Optimized Constellations for Coherent Optical Transmission Systems

Magnus Karlsson, Erik Agrell
36th European Conference on Optical Communication, Turin, Italy [Invited], p. We.8.C.3-
Paper in proceedings
2010

Electronic dispersion compensation by Hadamard transformation

Fahd Ahmed Khan, Erik Agrell, Magnus Karlsson
Optical Fiber Communication Conference, San Diego, CA, p. paper OWV4-
Paper in proceedings
2010

On the dimensionality of multilevel coded modulation in the high SNR regime

Lotfollah Beygi, Erik Agrell, Magnus Karlsson
IEEE Communications Letters. Vol. 14 (11), p. 1056-1058
Journal article
2010

The Impact of Self-Phase Modulation on Digital Clock Recovery in Coherent Optical Communication

Ahmet Serdar Tan, Henk Wymeersch, Pontus Johannisson et al
Paper in proceedings
2010

Analysis of non-linear impairments in 40 Gbaud PM DQPSK and D8PSK transmission

M.N. Chughtai, Marco Forzati, J. Mårtensson et al
Transparent Optical Networks (ICTON), 2010 12th International Conference on, p. 1 -4
Paper in proceedings
2010

Transmission of 240 Gb/s PM-RZ-D8PSK over 320 km in 10 Gb/s NRZ-OOK WDM System

Ekawit Tipsuwannakul, Mats Sköld, Magnus Karlsson et al
Optical Fiber Communication Conference, OFC 2010; San Diego, CA; United States; 21 March 2010 through 25 March 2010
Paper in proceedings
2010

High-speed 850-nm VCSELs for 40 Gb/s transmission

Johan Gustavsson, Petter Westbergh, Krzysztof Szczerba et al
Journal of Logic and Computation. Vol. 7720
Conference contribution
2010

Noise Figure Non-reciprocity in Fiber Optical Parametric Amplifiers with Zero-Dispersion-Wavelength Variations

Zhi Tong, Carl Peter Lundström, Magnus Karlsson et al
Paper in proceedings
2010

Power efficient subcarrier modulation for intensity modulated channels

Johnny Karout, Erik Agrell, Magnus Karlsson
Optics Express. Vol. 18 (17), p. 17913-17921
Journal article
2010

Phase-Sensitive Amplified DWDM DQPSK Signals Using Free-Running Lasers with 6-dB Link SNR Improvement over EDFA-based Systems

Zhi Tong, Carl Peter Lundström, Ekawit Tipsuwannakul et al
Paper in proceedings
2010

Cancellation of Nonlinear Phase Distortion in Self-Homodyne Coherent Systems

Pontus Johannisson, Martin E Sjödin, Magnus Karlsson et al
IEEE Photonics Technology Letters. Vol. 22 (11), p. 802-804
Journal article
2010

Noise figure measurements in phase-insensitive and phase-sensitive fiber parametric amplifier cascade

Zhi Tong, Adonis Bogris, Carl Peter Lundström et al
Optical Fiber Communication Conference, OFC 2010; San Diego, CA; United States; 21 March 2010 through 25 March 2010
Paper in proceedings
2010

Constellation optimization for coherent optical transmission systems

Magnus Karlsson, Erik Agrell
Proc. IEEE Photonics Society Annual Meeting, Denver, CO [Invited], p. 152-153
Paper in proceedings
2010

Modeling and measurement of the noise figure of a cascaded non-degenerate phase-sensitive parametric amplifier

Zhi Tong, Adonis Bogris, Carl Peter Lundström et al
Optics Express. Vol. 18 (14), p. 14820-14835
Journal article
2009

Comparison of 112-Gb/s PM-RZ-DQPSK and PM-RZ-D8PSK in Terms of OSNR Requirement and Transmission Impairments

Ekawit Tipsuwannakul, Mats Sköld, Magnus Karlsson et al
IEEE Photonics Technology Letters. Vol. 21 (22), p. 1680 - 1682
Journal article
2009

A two paths mode-locked fiber laser

Ionut Romeo Schiopu, Magnus Karlsson, Mathias Westlund et al
Proc. SPIE, Advanced Topics in Optoelectronics, Microelectronics, and Nanotechnologies IV. Vol. 7297 (1), p. 72971V-
Paper in proceedings
2009

Measurement of Sub-1 dB Noise Figure in a Non-degenerate Cascaded Phase Sensitive Fibre Parametric Amplifier

Zhi Tong, Carl Peter Lundström, Adonis Bogris et al
35th European Conference on Optical Communication, ECOC 2009; Vienna; Austria; 20 September 2009 through 24 September 2009, p. Art. no. 5287291-
Paper in proceedings
2009

Cancellation of SPM in Self-Homodyne Coherent Systems

Martin E Sjödin, Pontus Johannisson, Mats Sköld et al
Paper in proceedings
2009

Which is the most power-efficient modulation format in optical links?

Magnus Karlsson, Erik Agrell
Optics Express. Vol. 17 (13), p. 10814-10819
Journal article
2009

Benefits of Joint Statistics in MLSD-Equalized Transmission

N. Alic, Mats Sköld, Peter Andrekson et al
IEEE Photonics Technology Letters. Vol. 21 (8), p. 495-497
Journal article
2009

Experimental Comparison of Gain and Saturation Characteristics of a Parametric Amplifier in Phase-sensitive and Phase-insensitive Mode

Carl Peter Lundström, Joseph Kakande, Peter Andrekson et al
European Conference on Optical Communication (ECOC) 2009, p. Mo.1.1.1-
Paper in proceedings
2009

Low-Cost Multiparameter Optical Performance Monitoring Based on Polarization Modulation

Mats Sköld, Bengt-Erik Olsson, Magnus Karlsson et al
Journal of Lightwave Technology. Vol. 27 (2), p. 128-138
Journal article
2009

Experimental measuring of solitonic pulse stability for different configurations of the ring

Ionut Romeo Schiopu, Magnus Karlsson, Mathias Westlund et al
Proc. SPIE, Advanced Topics in Optoelectronics, Microelectronics, and Nanotechnologies IV. Vol. 7297 (1), p. 72971O-
Paper in proceedings
2009

1.56-μs continuously tunable parametric delay line for a 40-Gb/s signal

E. Myslivets, N. Alic, S. Moro et al
Optics Express. Vol. 17 (14), p. 11958-11964
Journal article
2009

Continuously Tuneable 40-Gb/s Parametric 1.56 microsecond- Delay

E. Myslivets, S. Moro, B. Kuo et al
European Conference on Optical Communication, ECOC 2009, p. paper 9.1.1-
Paper in proceedings
2009

Power-efficient modulation formats in coherent transmission systems

Erik Agrell, Magnus Karlsson
Journal of Lightwave Technology. Vol. 27 (22), p. 5115-5126
Journal article
2009

Intersymbol interference in DQPSK fibre-optic systems

Hongxia Zhao, Erik Agrell, Magnus Karlsson
European Transactions on Telecommunications. Vol. 20 (8), p. 758-769
Journal article
2009

Nearly octave-spanning cascaded four-wave-mixing generation in low dispersion highly nonlinear fiber

J. M. Chavez-Boggio, S. Moro, N. Alic et al
European Conference on Optical Communication, ECOC 2009, p. paper 9.1.2-
Paper in proceedings
2008

Trellis-Coded Modulation in Fiber-Optic Communications

Hongxia Zhao, Erik Agrell, Magnus Karlsson
Report
2008

Unequal bit error probabiltiy in coherent QPSK fiber-optic systems using phase modulator based transmitters

Hongxia Zhao, Erik Agrell, Magnus Karlsson
European Transactions on Telecommunications. Vol. 19 (8), p. 895-906
Journal article
2008

Constellation diagram measurements of induced phase noise in a regenerating parametric amplifier

Mats Sköld, Magnus Karlsson, Shoichiro Oda et al
Optical Fiber Communication Conference 2008, p. OML4-
Paper in proceedings
2008

Unequal bit error probabiltiy in coherent QPSK fiber-optic systems using phase modulator based transmitters

Hongxia Zhao, Erik Agrell, Magnus Karlsson
European Transactions on Telecommunications. Vol. 19 (8), p. 895-906
Journal article
2008

Constellation diagram analysis of DPSK signal regeneration in a saturated parametric amplifier

Mats Sköld, J. Yang, Henrik Sunnerud et al
Optics Express. Vol. 16 (9), p. 5974-5982
Journal article
2008

Fiber optic parametric amplifiers - properties, applications and challenges

Magnus Karlsson
Conference on Lasers and Electro-Optics/Quantum Electronics and Laser Science Conference and Photonic Applications Systems Technologies, CLEO 2008, p. CWJ1-
Paper in proceedings
2007

Polarization-based Monitoring in WDM Systems

Mats Sköld, Bengt-Erik Olsson, Magnus Karlsson et al
Proceedings of Optoelectronics and Communications Conference, p. 346-347
Conference contribution
2007

Noise in dual-pumped fiber-optical parametric amplifiers: Theory and experiments

Per Kylemark, J. Ren, Magnus Karlsson et al
Journal of Lightwave Technology. Vol. 25 (9), p. 2837-2846
Journal article
2007

Impact of Pump Phase-Modulation on the Bit-Error Rate in Fiber-Optical Parametric-Amplifier-Based Systems

Per Kylemark, J. Ren, Y. Myslivets et al
IEEE Photonics Technology Letters. Vol. 19 (2), p. 79-81
Journal article
2007

Noise in Orthogonally Pumped Fiber-Optical Parametric Amplifiers

Per Kylemark, J. Ren, S. Radic et al
IEEE Photonics Technology Letters. Vol. 19 (2), p. 88-90
Journal article
2007

Noise statistics in fiber optical parametric amplifiers

Per Kylemark, Magnus Karlsson, T. Torounidis et al
Journal of Lightwave Technology. Vol. 25 (2), p. 612-620
Journal article
2007

Transmitter comparison and unequal bit error probabilities in coherent QPSK systems

Hongxia Zhao, Magnus Karlsson, Erik Agrell
Optical Fiber Communication Conference and the National Fiber Optic Engineers Conference, p. OTuH2-
Paper in proceedings
2006

Geometrical interpretation of second-order PMD

Magnus Karlsson
Journal of Lightwave Technology. Vol. 24 (1), p. 643 - 51
Journal article
2006

Field trial of polarization-assisted optical performance monitoring operating in an 820 km WDM system

Mats Sköld, Bengt-Erik Olsson, Magnus Karlsson et al
European conference on optical communications. Vol. 4 (2006), p. 97-98
Paper in proceedings
2006

Suppression of Phase Error in Differential Phase-Shift Keying Data by Amplitude Regeneration

Pontus Johannisson, Göran Adolfsson, Magnus Karlsson
Optics Letters. Vol. 31 (10), p. 1385-1387
Journal article
2006

Impact of Phase Modulation and Filter Characteristics on Dual-Pumped Fiber-Optical Parametric Amplification

Per Kylemark, Magnus Karlsson, Peter Andrekson
IEEE Photonics Technology Letters. Vol. 18 (2), p. 439 - 441
Journal article
2006

Noise statistics of fiber optical parametric amplifiers

Per Kylemark, Magnus Karlsson, Thomas Torounidis et al
OFC/NFOEC 2006. 2006 Optical Fiber Communication Conference and National Fiber Optic Engineers Conference, p. OWT5-
Paper in proceedings
2006

Properties of Pump-Induced Noise in Fiber Optic Parametric Amplifiers

Per Kylemark, Magnus Karlsson, Peter Andrekson
Proc. of Optical Amplifiers and their Applications (OAA) Topical Meeting and Coherent Optical Technologies and Applications (COTA) Topical Meeting, p. OWA3-
Paper in proceedings
2006

Effect of nonlinearities on PMD system degradations

Magnus Karlsson, Henrik Sunnerud
OFC/NFOEC 2006. 2006 Optical Fiber Communication Conference and National Fiber Optic Engineers Conference, p. OWE4-
Paper in proceedings
2006

Gain and wavelength dependence of the noise-figure in fiber optical parametric amplification

Per Kylemark, Magnus Karlsson, Peter Andrekson
IEEE Photonics Technology Letters. Vol. 18 (11), p. 1255-7
Journal article
2006

Performance comparison of optical 8-ary differential phase-shift keying systems with different electrical decision schemes: Comment

Erik Agrell, Magnus Karlsson
Optics Express. Vol. 14 (4), p. 1700-1701
Journal article
2006

Fiber communications using convolutional coding and bandwidth-efficient modulation

Torsten Wuth, Erik Agrell, Magnus Karlsson et al
Optics Express. Vol. 14 (2), p. 542-555
Journal article
2006

Effects of Nonlinearities on PMD-Induced System Impairments

Magnus Karlsson, Henrik Sunnerud
Journal of Lightwave Technology. Vol. 24 (11), p. 4127-4137
Journal article
2006

Semi-analytic saturation theory of fiber optical parametric amplifiers

Per Kylemark, Henrik Sunnerud, Magnus Karlsson et al
Journal of Lightwave Technology. Vol. 24 (9), p. 3471-9
Journal article
2006

Trellis-Coded Modulation in PSK and DPSK Communications

Hongxia Zhao, Erik Agrell, Magnus Karlsson
European Conference on Optical Communication, p. 1-2
Paper in proceedings
2006

OTDR technique for characterization of fiber optic parametric amplifiers

Bengt-Erik Olsson, Thomas Torounidis, Magnus Karlsson et al
OFC/NFOEC 2006. 2006 Optical Fiber Communication Conference and National Fiber Optic Engineers Conference, p. OWT3-
Paper in proceedings
2005

Correction to “Noise Characteristics of Fiber Optical Parametric Amplifiers"

Per Kylemark, Per Olof E Hedekvist, Henrik Sunnerud et al
Journal of Lightwave Technology. Vol. 23 (6), p. 2192-2192
Journal article
2005

Characterization of a Self-Phase-Modulation-Based All-Optical Regeneration System

Pontus Johannisson, Magnus Karlsson
IEEE Photonics Technology Letters. Vol. 17 (12), p. 2667-2669
Journal article
2005

Fiber-optic parametric amplifier in a loop mirror configuration

Thomas Torounidis, Bengt-Erik Olsson, Henrik Sunnerud et al
IEEE Photonics Technology Letters. Vol. 17 (2), p. 321-323
Journal article
2005

OTDM Add & Drop Multiplexer Based on XPM-Induced Wavelength Shifting in Highly Nonlinear Fiber

Jie Li, Bengt-Erik Olsson, Magnus Karlsson et al
Journal of Lightwave Technology. Vol. 23 (9), p. 2654-2661
Journal article
2005

Improvement of DPSK transmission by using convolutional error correction coding

Torsten Wuth, Erik Agrell, Magnus Karlsson
Optical Fiber Communication Conference, 2005. Technical Digest. OFC/NFOEC. Vol. 4, p. 534-536
Paper in proceedings
2005

Channel monitoring in WDM systems by utilising polarisation scrambling

Mats Sköld, Bengt-Erik Olsson, Henrik Sunnerud et al
European conference on optical communication. Vol. 3, p. 719-720
Paper in proceedings
2005

Fiber Optical Parametric Amplifier Pulse Source: Theory and Experiments

Thomas Torounidis, Magnus Karlsson, Peter Andrekson
IEEE/OSA Journal of Lightwave Technology. Vol. 23 (12), p. 4067-4073
Journal article
2005

PMD-insensitive DOP-based OSNR Monitoring by Spectral SOP Measurements

Mats Sköld, Bengt-Erik Olsson, Henrik Sunnerud et al
Paper in proceedings
2005

Phase-Plane Analysis of Rational Harmonic Mode-Locking in an Erbium-Doped Fiber Ring Laser

Wenn Jing Lai, Ping Shum, Le Nguyen Bihn et al
IEEE Journal of Quantum Electronics. Vol. 41 (Nr 3)
Journal article
2005

Maximum second order PMD in emulators - a geometric approach

Magnus Karlsson
Journal of Lightwave Technology, p. OThT2-
Paper in proceedings
2005

Software-synchronized all-optical sampling for fiber communication systems

Mathias Westlund, Henrik Sunnerud, Magnus Karlsson et al
Journal of Lightwave Technology. Vol. 23 (3), p. 1088-1099
Journal article
2005

Penalties due to the combined effects of amplitude noise and timing-jitter with application to a 40 Gbit/s DM-soliton system

Per Kylemark, Magnus Karlsson, Henrik Sunnerud
Optical Fiber Technology. Vol. 11 (1), p. 20-33
Journal article
2004

Optical performance monitoring using degree of polarization in presence of polarization-mode dispersion

Mats Petersson, Henrik Sunnerud, Magnus Karlsson
European Conference on Optical Communication, Stockholm, Sweden, Sept 5-9, 2004, p. paper Tu3.6.2-
Paper in proceedings
2004

Gain saturation characteristics of fiber optical parametric amplifiers

Per Kylemark, Henrik Sunnerud, Magnus Karlsson et al
Proceedings of European Conference on Optical Communication (ECOC'04), p. We2.3.5-
Paper in proceedings
2004

PMD Compensation Using 2R and 3R Regenerators

Magnus Karlsson, Henrik Sunnerud, Bengt-Erik Olsson
Proceedings of European Conference on Optical Communication, ECOC 2004´, Stockholm, Sweden,September 5-9, 2004, p. Paper We1.4.2-
Paper in proceedings
2004

The statistics of polarization-dependent loss in a recirculating loop

Claudio Vinegoni, Magnus Karlsson, Mats Petersson et al
Journal of Lightwave Technology. Vol. 22 (4), p. 968-976
Journal article
2004

Time-resolved state-of-polarization measurement using all-optical sampling with sampling pulse polarization rotation

Mathias Westlund, Henrik Sunnerud, Bengt-Erik Olsson et al
Proceedings of European Conference on Optical Communication (ECOC'04), p. Mo3.5.6-
Paper in proceedings
2004

Performance monitoring in optical networks using stokes parameters

Mats Peterson, Henrik Sunnerud, Magnus Karlsson et al
IEEE Photonic Technology Letters. Vol. 16, p. 686-688
Journal article
2004

Fiber optic parametric amplifier using the nonlinear optical loop mirror

Thomas Torounidis, Bengt-Erik Olsson, Henrik Sunnerud et al
In proceedings of European Conference on Optical Communication, Stockholm, Sweden, September 5-9, 2004, p. paper We4.P.029-
Paper in proceedings
2004

PMD impact on optical systems: Single- and multichannel effects

Magnus Karlsson, Henrik Sunnerud
Optical Fiber Communication Reports 1, ed. by C.R. Menyuk and A. Galtarossa,, p. 99-114
Chapter in monograph, book - peer reviewed
2004

Guest Editorial, Special Issue on Polarization-Mode Dispersion

L.E. Nelson, Magnus Karlsson, D.Q Chowdhury
Journal of Lightwave Technology. Vol. 22 (4), p. 951-952
Journal article
2004

Journal of Lightwave Technology special issue on Polarization mode dispersion

Magnus Karlsson, Lynn Nelson, Dipak Chowdhury
Edited book
2004

PMD impact on optical systems: Single- and multichannel effects

Magnus Karlsson, Henrik Sunnerud
Journal of Optical and Fiber Communication Research. Vol. 1 (2), p. 123-140
Journal article
2004

Quaternion approach to PMD and PDL phenomena in optical fiber systems

Magnus Karlsson, Mats Petersson
Journal of Lightwave Technology. Vol. 22 (4), p. 1137-1146
Journal article
2004

Soliton Communication Systems

Magnus Karlsson, Peter Andrekson
Chapter in monograph, book - peer reviewed
2004

Noise characteristics of fiber optical parametric amplifiers

Per Kylemark, Per Olof E Hedekvist, Magnus Karlsson et al
Journal of Lightwave Technology. Vol. 22, p. 409-416
Journal article
2004

Frequency Detune in Parametric Amplifier Based Fibre Ring Laser

W.J. Lai, Mathias Westlund, Magnus Karlsson
Proceedings of European Conference on Optical Communication, ECOC 2004, Stockholm, Sweden, September 5-9, 2004, p. paper We4.P.016-
Paper in proceedings
2004

0.5-Tb/s eye-diagram measurement by optical sampling using XPM-induced wavelenght shifting in highly nonlinear fiber

J Li, Mathias Westlund, Henrik Sunnerud et al
IEEE Photonic Technology Letters. Vol. 16, p. 566-568
Journal article
2004

OTDM add-drop multiplexer based on XPM-induced wavelenght shifiting in highly nonlinear fiber

Jie Li, Bengt-Erik Olsson, Magnus Karlsson et al
OSA Trends in Optics and Photonics, p. paper ThN4-
Paper in proceedings
2003

DM solitons in long-haul DWDM systems at 40 Gb/s with nonlinear interactions and PMD

Per Kylemark, Henrik Sunnerud, Magnus Karlsson et al
IEEE Photonics Technology Letters. Vol. 15 (10), p. 1372-4
Journal article
2003

0.5 Tbit/s eye-diagram measurement by optical sampling using XPM-induced wavelength shifting in highly nonlinear fiber

Jie Li, Mathias Westlund, Henrik Sunnerud et al
Proc. European Conference on Optical Communication (ECOC'03), p. Mo4.6.4-
Paper in proceedings
2003

Polarization-dependent loss statistics in recirculating loops

C. Vinegoni, Mats Petersson, Henrik Sunnerud et al
European Conference on Optical Communication, ECOC 2003, p. Mo3.7.3-
Paper in proceedings
2003

Optimum receiver decision point in presence of PMD in fiber-optic communication systems

Henrik Sunnerud, Magnus Karlsson, Peter Andrekson
IEEE Photonics Technology Letters. Vol. 15 (11), p. 1651-1653
Journal article
2003

System impacts of polarization-mode dispersion (invited)

Peter Andrekson, Henrik Sunnerud, Magnus Karlsson
European Conference on Optical Communication, ECOC 2003, p. WE 3.6.1-
Paper in proceedings
2003

Optical Solitons, in Wiley Encyclopedia of Telecommunications

Magnus Karlsson, Peter Andrekson
Wiley Encyclopedia of Telecommunications, p. optical Solitons-
Chapter in monograph, book - peer reviewed
2003

Software-synchronized all-optical sampling

Mathias Westlund, Henrik Sunnerud, Magnus Karlsson et al
Optical Fiber Communication Conference, OFC'2003, p. WP6-
Paper in proceedings
2003

Polarization mode dispersion (PMD) mitigation vs. 2R and 3R regeneration in ultra-long haul transmission (invited talk)

Magnus Karlsson, Henrik Sunnerud, Bengt-Erik Olsson
Frontiers in Optics, p. TuP1-
Paper in proceedings
2003

Statistics of PMD in recirculating loops

Mats Petersson, C. Vinegoni, Henrik Sunnerud et al
IEEE Photonics Technol. Letters. Vol. 15, p. 1543-1545
Journal article
2003

0.5 Tbit/s eye-diagram measurement by optical sampling using XPM-induced wavelength shifting in highly nonlinear fiber

Jie Li, Mathias Westlund, Henrik Sunnerud et al
IEEE Photonics Technology Letters. Vol. 16 (2), p. 566-
Journal article
2003

Third-order dispersion compensation using a phase modulator

E. Hellström, Mathias Westlund, Henrik Sunnerud et al
Journal of Lightwave Technology. Vol. 20 (5), p. 1188-1197
Journal article
2003

Distribution of differential group delay in recirculating loops

Mats Petersson, C. Vinegoni, Henrik Sunnerud et al
2003 Digest of the LEOS summer topical meetings, p. TuB4.2-
Paper in proceedings
2003

The fiber optic parametric amplifier and its applications for high-capacity communication and all-optical sampling

Magnus Karlsson, Per Olof E Hedekvist, Mathias Westlund et al
DOPS-NYT. Vol. 18 (4), p. 16-19
Magazine article
2003

160 Gb/s optical data pattern monitoring using a software-synchronized all-optical sampling system

Mathias Westlund, Henrik Sunnerud, Magnus Karlsson et al
Proc. Eur. Conf. Optical Communication (ECOC 2003), p. Mo3.6.2-
Paper in proceedings
2003

OTDM Demultiplexer Based on XPM-induced wavelength shifting in Highly Nonlinear Fiber

J. Li, Bengt-Erik Olsson, Magnus Karlsson et al
Optical Fiber Communication Conference, OFC'2003, p. TuH6-
Paper in proceedings
2002

Is soliton communications really beneficial in presence of polarization mode dispersion?

Magnus Karlsson, Chongjin Xie, Henrik Sunnerud et al
Nonlinear Guided Waves and Their Applications, p. NLMA1-
Paper in proceedings
2002

Pulse broadening in systems with PMD and a polarizer

K Eriksson, Magnus Karlsson, Henrik Sunnerud
European Conference on Optical Communication, ECOC 2002.. Vol. 4, p. 9.3.6-
Paper in proceedings
2002

PMD impact on optical systems: single- channel effects (invited talk)

Magnus Karlsson
Venice Summer School on Polarization Mode Dispersion, VSS'02, p. Tu4-
Conference contribution
2002

A comparison between different PMD compensation techniques

Henrik Sunnerud, Chongjin Xie, Magnus Karlsson et al
Journal of Lightwave Technology. Vol. 20 (3), p. 368-
Journal article
2002

Long-term automatic PMD compensation for 160 Gbit/s RZ transmission

Mathias Westlund, Henrik Sunnerud, Jie Li et al
Electronics Letters. Vol. 38 (17), p. 982--983-
Journal article
2002

Polarization mode dispersion in high-speed fiber-optic transmission systems (invited)

Henrik Sunnerud, Magnus Karlsson, Chongjin Xie et al
Journal of Lightwave Technology. Vol. 20 (12), p. 2204-2219
Journal article
2002

Evaluation of Third-Order Dispersion Compensation by Phase Modulation for 160 Gb/s RZ Data Using an All-Optical Sampling System

E Hellström, Mathias Westlund, Henrik Sunnerud et al
European Conference on Optical Communication, ECOC 2002.. Vol. 3, p. 6.1.5-
Paper in proceedings
2002

Higher-order PMD compensator with a simple feedback signal

Henrik Sunnerud, Magnus Karlsson, Mathias Westlund et al
European Conference on Optical Communication, ECOC 2002.. Vol. 4, p. 11.1.3-
Paper in proceedings
2002

PMD mitigation: performance of various approaches

Magnus Karlsson
Optical Fiber Communication conferenrence, OFC'02, p. ThU2-
Paper in proceedings
2002

Multi-channel OSNR monitoring for WDM networks

Mats Petersson, Henrik Sunnerud, Bengt-Erik Olsson et al
European Conference on Optical Communication, ECOC 2002.. Vol. 1, p. 1.1.6-
Paper in proceedings
2002

Measurement of ultralow Gordon-Haus timing jitter in dispersion-managed soliton systems

Mathias Westlund, Henrik Sunnerud, Jie Li et al
Photonics Technology Letters, IEEE. Vol. 14 (8), p. 1097--1099-
Journal article
2002

Influences of polarization-mode dispersion on soliton transmission systems

Chongjin Xie, Magnus Karlsson, Peter Andrekson et al
IEEE Journal on Selected Topics in Quantum Electronics. Vol. 8 (3), p. 575--590-
Journal article
1995

Cherenkov radiation emitted by solitons in optical fibers

N. Akhmediev, Magnus Karlsson
Physical Review A - Atomic, Molecular, and Optical Physics. Vol. 51 (3), p. 2602-2607
Journal article
1994

Optical fiber-grating compressors utilizing long fibers

Magnus Karlsson
Optics Communications. Vol. 112 (1-2), p. 48-54
Journal article
1994

Dark soliton pairs in fiber couplers

A. Ankiewicz, Magnus Karlsson, N. Akhmediev
Optics Communications. Vol. 111 (1-2), p. 116-122
Journal article
1994

Nonlinear Propagation of Optical Pulses and Beams

Magnus Karlsson
Doctoral thesis
1994

Radiationless optical solitons with oscillating tails

N.N. Akhmediev, A.V. Buryak, Magnus Karlsson
Optics Communications. Vol. 110 (5-6), p. 540-544
Journal article
1993

Modulational instability dynamics in a spatial focusing and temporal defocusing medium.

Dan Anderson, Magnus Karlsson, Mietek Lisak et al
Physical Review E - Statistical Physics, Plasmas, Fluids, and Related Interdisciplinary Topics. Vol. 47 (5), p. 3617-3622
Journal article
1993

Ultrashort solitons at the minimum-dispersion wavelength: effects of fourth-order dispersion.

Anders Höök, Magnus Karlsson
Optics Letters. Vol. 18 (17), p. 1388-90
Journal article
1992

Optical beams in saturable self-focusing media

Magnus Karlsson
Physical Review A - Atomic, Molecular, and Optical Physics. Vol. 46 (5), p. 2726-2734
Journal article
1992

Dynamics of self-focusing and self-phase modulation in a parabolic index optical fiber.

Magnus Karlsson, Dan Anderson, Mats Desaix
Optics Letters. Vol. 17 (1), p. 22-24
Journal article
1991

Dynamic effects of Kerr nonlinearity and spatial diffraction on self-phase modulation of optical pulses.

Magnus Karlsson, Dan Anderson, Mats Desaix et al
Optics Letters. Vol. 16 (18), p. 1373-5
Journal article