Fast and robust chromatic dispersion estimation based on temporal auto-correlation after digital spectrum superposition
Journal article, 2015

We investigate and experimentally demonstrate a fast and robust chromatic dispersion (CD) estimation method based on temporal auto-correlation after digital spectrum superposition. The estimation process is fast, because neither tentative CD scanning based on CD compensation nor specific cost function calculations are used. Meanwhile, the proposed CD estimation method is robust against polarization mode dispersion (PMD), amplified spontaneous emission (ASE) noise and fiber nonlinearity. Furthermore, the proposed CD estimation method can be used for various modulation formats and digital pulse shaping technique. Only 4096 samples are necessary for CD estimation of single carrier either 112 Gbps DP-QPSK or 224 Gbps DP-16QAM signal with various pulse shapes. 8192 samples are sufficient for the root-raised-cosine pulse with roll-off factor of 0.1. As low as 50 ps/nm standard deviation together with a worst estimation error of about 160 ps/nm is experimentally obtained for 7 x 112 Gbps DP-QPSK WDM signal after the transmission through 480 km to 9120 km single mode fiber (SMF) loop using different launch powers.

Author

SC Yao

Huazhong University of Science and Technology

Wuhan National Laboratory for Optoelectronics

Tobias Eriksson

Chalmers, Microtechnology and Nanoscience (MC2), Photonics

S Fu

Huazhong University of Science and Technology

Wuhan National Laboratory for Optoelectronics

Pontus Johannisson

Chalmers, Microtechnology and Nanoscience (MC2), Photonics

Magnus Karlsson

Chalmers, Microtechnology and Nanoscience (MC2), Photonics

Peter Andrekson

Chalmers, Microtechnology and Nanoscience (MC2), Photonics

T Ming

Wuhan National Laboratory for Optoelectronics

Huazhong University of Science and Technology

DM Liu

Huazhong University of Science and Technology

Optics Express

1094-4087 (ISSN)

Vol. 23 12 15418-15430

Subject Categories

Atom and Molecular Physics and Optics

DOI

10.1364/OE.23.015418

More information

Created

10/7/2017