Open AccessFiltering-tolerant transmission by the Walsh-Hadamard transform for super-channel beyond 100 Gb/s
Author(s) -
Kohki Shibahara,
Arata Masuda,
Hiroki Kishikawa,
S. Kawai,
Mitsunori Fukutoku
Publication year - 2015
Publication title -
optics express
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.394
H-Index - 271
ISSN - 1094-4087
DOI - 10.1364/oe.23.013245
Subject(s) - hadamard transform , transmission (telecommunications) , channel (broadcasting) , computer science , optics , optical filter , physics , electronic engineering , algorithm , telecommunications , engineering , quantum mechanics
Super-channel transmission is a promising solution to increase the capacity of a channel beyond 100 Gb/s in next-generation optical networks. The performance of a super-channel comprising multiple subcarriers, however, degrades if optical filtering distortions occur in particular subcarriers. In this paper, we propose a method that improves super-channel performance by dispersing the distortions over all subcarriers. We also numerically demonstrate that the method effectively mitigates the filtering-induced penalty suffered by super-channels.