Paper Info
Title
Nonlinearity Mitigation Of Pdm-16qam Signals Using Multiple Csi-Opcs In Ultra-Long-Haul Transmission Without Excess Penalty
Abstract
We developed a polarization-independent and reserved-band-less complementary spectral inverted optical phase conjugation (CSI-OPC) device using dual-band difference frequency generation based on highly efficient periodically poled LiNbO3 waveguide technologies. To examine the nonlinearity mitigation in a long-haul transmission using a large number of OPCs, we installed a CSI-OPC device in the middle of a pure silica core fiber-based recirculating loop transmission line with a length of 320 km. First, we examined the fiber-input power tolerance after 5,120-km and 6,400-km transmission using 22.5-Gbaud PDM-16QAM 10-channel DWDM signals and found a Q-factor improvement of over 1.3 dB along with enhanced power tolerance thanks to mitigating the fiber nonlinearity. We then demonstrated transmission distance extension using the CSI-OPC device. The use of multiple CSI-OPCs enables an obvious performance improvements attained by extending the transmission distance from 6,400 km to 8,960 km, which corresponds to applying the CSI-OPC device 28 times. Moreover, there was no Q-factor degradation for the link in a linear regime after applying the CSI-OPC device more than 16 times. These results demonstrate that the CSI-OPC device can improve the non-linear tolerance of PDM-16QAM signals without an excess penalty.
Year
DOI
Venue
2020
10.1587/transcom.2019OBP0001
IEICE TRANSACTIONS ON COMMUNICATIONS
Keywords
DocType
Volume
optical signal processing techniques for optical communications, optical phase conjugation, nonlinear optics, periodically poled LiNbO3 waveguide
Journal
E103B
Issue
ISSN
Citations 
11
0916-8516
0
PageRank 
References 
Authors
0.34
0
9
Name
Order
Citations
PageRank
takeshi umeki113.75
Takayuki Kobayashi2811.37
Akihide Sano3114.46
Takuya Ikuta400.34
Masashi Abe500.34
Takushi Kazama603.04
Koji Enbutsu712.06
Ryoichi Kasahara814.08
Y. Miyamoto9912.31