Open AccessNonlinear phase noise reduction using digital back propagation and midpoint optical phase conjugation
Author(s) -
Saber Rahbarfam,
Shiva Kumar
Publication year - 2019
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.27.008968
Subject(s) - optics , wavelength division multiplexing , phase noise , transmitter , dispersion (optics) , optical fiber , phase (matter) , physics , noise (video) , channel spacing , phase conjugation , channel (broadcasting) , single mode optical fiber , reduction (mathematics) , nonlinear system , telecommunications , computer science , mathematics , wavelength , laser , quantum mechanics , artificial intelligence , image (mathematics) , geometry
We introduce a new system configuration to reduce the nonlinear phase noise (NLPN) by splitting the digital back propagation (DBP) between transmitter and receiver, asymmetrically, along with using mid-line optical phase conjugation (OPC). Our analytical results show that the variance of NLPN reduces by a factor of 16 compared to the standard configuration which is the dispersion uncompensated fiber optic link with full DBP at the receiver, i.e., the back propagation for the fiber spans is done entirely at the receiver. Numerical simulations show the same trend as predicted by the analytical model, and show about 2.6 dB and 2 dB improvement in Q-factor, for single channel and 5-channel WDM systems, respectively.