Open Access112 Gb/s transmission over 80 km SSMF using PDM-PAM4 and coherent detection without optical amplifier
Author(s) -
Xian Zhou,
Kangping Zhong,
Lei Gao,
Yiguang Wang,
Liang Wang,
Yanfu Yang,
Jinhui Yuan,
Keping Long,
Li Zeng,
Alan Pak Tao Lau,
Chao Lu
Publication year - 2016
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.24.017359
Subject(s) - optics , polarization mode dispersion , polarization division multiplexing , bit error rate , physics , optical amplifier , transmission (telecommunications) , quadrature amplitude modulation , heterodyne detection , amplifier , dispersion (optics) , computer science , wavelength division multiplexing , bandwidth (computing) , telecommunications , channel (broadcasting) , laser , wavelength
Polarization-division-multiplexed (PDM) four-level pulse amplitude modulation (PAM4) with coherent detection is a promising low cost solution for 80 km inter-datacenter transmissions at 100 Gb/s and beyond. In this paper, three modified adaptive equalization algorithms for the PDM-PAM4 optical coherent systems, i.e. signal-phase aid least-mean-square (SP-LMS) algorithm, training multi-modulus algorithm (TMMA) and cascaded four-modulus algorithm (CMMA-4), are proposed and compared. Based on the proposed algorithms, 112 Gb/s PDM-PAM4 transmission over 80 km standard single mode fiber (SSMF) in C-band for a bit error rate (BER) below 3.8e-3 is successfully demonstrated without optical amplifier, chromatic dispersion (CD) pre-compensation and extra carrier recovery operations.