Open AccessConjugate nonlinear-optical loop mirror (Conj-NOLM)-based phase-preserving multilevel amplitude regenerator
Author(s) -
Feng Wen,
Baojian Wu,
Kun Qiu,
Stylianos Sygletos
Publication year - 2019
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.27.019940
Subject(s) - optics , phase conjugation , regenerative heat exchanger , amplitude , transmission (telecommunications) , phase (matter) , self phase modulation , phase modulation , physics , phase distortion , distortion (music) , modulation (music) , phase noise , amplified spontaneous emission , nonlinear system , nonlinear optics , computer science , optoelectronics , amplifier , telecommunications , laser , acoustics , heat exchanger , cmos , quantum mechanics , thermodynamics
We propose a novel phase-preserving multilevel amplitude regenerator scheme by cascading two nonlinear-optical loop mirrors (NOLMs) with an intermediate optical phase conjugator (OPC) stage. Joint parameter optimization of the two NOLM units has been carried out to cancel the introduced phase distortion and enable a more power-efficient performance. Moreover, our scheme combines the operation of the NOLM and the OPC in a single subsystem, enabling the compensation of both amplitude and phase distortions when located symmetrically in a transmission link. To this end, extensive numerical simulations have been performed to evaluate the regeneration performance in a transmission link dominated by amplified spontaneous emission (ASE) noise and Kerr-induced nonlinear distortions (self-phase modulation-induced phase distortion), achieving over 100% reach extension compared to the cases of un-regenerative, or a mid-span OPC-based transmission links.