Open AccessDispersion management for nonlinearity mitigation in two-span 28 GBaud QPSK phase-sensitive amplifier links
Author(s) -
Egon Astra,
Samuel L. I. Olsson,
Henrik Eliasson,
Peter A. Andrekson
Publication year - 2017
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.25.013163
Subject(s) - span (engineering) , optics , dispersion (optics) , amplifier , phase shift keying , transmission (telecommunications) , nonlinear system , self phase modulation , phase (matter) , polarization mode dispersion , physics , residual , materials science , bit error rate , nonlinear optics , channel (broadcasting) , computer science , telecommunications , optoelectronics , engineering , laser , algorithm , civil engineering , cmos , quantum mechanics
We present an investigation of dispersion map optimization for two-span single-channel 28 GBaud QPSK transmission systems with phase-sensitive amplifiers (PSAs). In experiments, when the PSA link is operated in a highly nonlinear regime, a 1.4 dB error vector magnitude (EVM) improvement is achieved compared to a one-span optimized dispersion map link due to improved nonlinearity mitigation. The two-span optimized dispersion map of a PSA link differs from the optimized dispersion map of a dispersion managed phase-insensitive amplifier (PIA) link. Simulations show that the performance of the two-span dispersion map optimized PSA link does not improve by residual dispersion optimization. Further, by using the two-span optimized dispersion maps repeatedly in a long-haul PSA link instead of one-span optimized maps, the maximum transmission reach can be improved 1.5 times.