Open AccessTrellis-based feed-forward carrier recovery for coherent optical systems
Author(s) -
Mahdi Zamani,
Hamidreza Najafi,
Demin Yao,
J. Mitra,
Xuefeng Tang,
Chuandong Li,
Zhuhong Zhang
Publication year - 2016
Publication title -
optics express
Language(s) - Uncategorized
Resource type - Journals
SCImago Journal Rank - 1.394
H-Index - 271
ISSN - 1094-4087
DOI - 10.1364/oe.24.023531
Subject(s) - computer science , phase noise , quadrature amplitude modulation , modulation (music) , optics , noise (video) , transmission (telecommunications) , electronic engineering , phase modulation , trellis (graph) , bit error rate , algorithm , telecommunications , channel (broadcasting) , physics , decoding methods , engineering , artificial intelligence , acoustics , image (mathematics)
An efficient trellis-based phase noise mitigation algorithm is proposed to highly improve the performance of coherent transmission systems, especially in high order modulation formats. The proposed method targets the coherent optical systems where the performance is limited by various sources of phase noise including laser line-width, fiber non-linearity, and phase noise induced by phase-locked loop. Considering hardware limitations of ultra-high data rate processing in optical systems, a hardware-efficient parallelized and pipelined architecture is utilized. Experimental results in 200 Gb/s DP-16QAM co-propagated with 10-G channels demonstrate significant performance improvement over other existing methods.