Open AccessAll-optical tunable multilevel amplitude regeneration based on coherent wave mixing using a polarizer
Author(s) -
Zahra Bakhtiari,
Alexander A. Sawchuk
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.23.010533
Subject(s) - amplitude , optics , quadrature amplitude modulation , amplitude modulation , physics , polarizer , phase noise , optical modulation amplitude , cross phase modulation , phase modulation , pulse amplitude modulation , optical amplifier , frequency modulation , telecommunications , laser , bandwidth (computing) , computer science , birefringence , detector , bit error rate , channel (broadcasting) , pulse (music)
We describe and demonstrate an all-optical tunable phase- preserving scheme for multilevel amplitude regeneration based on coherent optical wave mixing using a polarizer for optical star 8-quadrature-amplitude modulation (star-8QAM) and star-16QAM signals with a power ratio of 1:5. Amplitude noise can be efficiently suppressed on both amplitude levels. A regeneration factor of nearly 5 for the higher-amplitude level of star-8QAM and 3 for lower-amplitude level are achieved. The system robustness against nonlinear phase noise originating from the Gordon-Mollenauer effect in a 150 km transmission line is investigated using the proposed amplitude regenerator.