Modulation formats for multi-core fiber transmission
Journal article, 2014

©2014 Optical Society of America We investigate high dimensional modulation formats for multi-core fibers (MCFs) and spatial superchannels. We show that the low skew variations between MCF cores maybe exploited to generate 'multi-core' formats that offer significant advantages over independently transmitting conventional 4-dimensional formats in each core. We describe how pulse position modulation formats may be transposed to the spatial domain and then investigate a family of modulation formats referred to as core-coding, one of which has the same power and spectral efficiency as polarization switched quaternary phase shift keying but with half of the optical power, potentially improving non-linear tolerance for long distance transmission, albeit at the cost of implementation challenges. Finally, we investigate the application of set-partitioning to multi-core formats using a single-parity check bit transmitted in one quadrature of one polarization in one of the cores and polarization-division multiplexing quadrature phase shift keying data in all remaining cores. We observe that for high core counts, an advantage of almost 3 dB in asymptotic power efficiency may be obtained with negligible impact on spectral efficiency, which translates into experimentally measured reduction in the required optical signal-to-noise ratio of up to 1.8 dB at a bit-error-rate of 10-5 and the same data-rate, and additional transmission reach of up to 20%.

Author

Benjamin Puttnam

Research Organization of Information and Systems National Institute of Informatics

Tobias Eriksson

Chalmers, Microtechnology and Nanoscience (MC2), Photonics

J.M. Delgado Mendinueta

Research Organization of Information and Systems National Institute of Informatics

R. S. Luis

Research Organization of Information and Systems National Institute of Informatics

Y. Awaji

Research Organization of Information and Systems National Institute of Informatics

N. Wada

Research Organization of Information and Systems National Institute of Informatics

Magnus Karlsson

Chalmers, Microtechnology and Nanoscience (MC2), Photonics

Erik Agrell

Chalmers, Signals and Systems, Communication, Antennas and Optical Networks

Optics Express

1094-4087 (ISSN) 10944087 (eISSN)

Vol. 22 26 32457-32469

Areas of Advance

Information and Communication Technology

Subject Categories

Electrical Engineering, Electronic Engineering, Information Engineering

DOI

10.1364/OE.22.032457

More information

Latest update

3/29/2018