Open AccessOptical independent-sideband modulation for bandwidth-economic coherent transmission
Author(s) -
HungChang Chien,
Zhensheng Jia,
Junwen Zhang,
Ze Dong,
Jianjun Yu
Publication year - 2014
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.22.009465
Subject(s) - transmitter , wavelength division multiplexing , optics , sideband , computer science , optical modulation amplitude , bandwidth (computing) , modulation (music) , channel spacing , quadrature amplitude modulation , optical performance monitoring , pulse amplitude modulation , electronic engineering , transmission (telecommunications) , telecommunications , amplitude modulation , wavelength , physics , optical amplifier , channel (broadcasting) , bit error rate , frequency modulation , laser , engineering , radio frequency , detector , acoustics , pulse (music)
We proposed and implemented a bandwidth-economic coherent optical transmission technology using optical independent-sideband (O-ISB) modulation. Generation of two software-defined, 30-GBd O-ISB channels per wavelength sharing one set of transmitter hardware was demonstrated, which was made possible by digital single-sided up-conversion, channel pre-equalization and optical IQ modulation with precise amplitude and delay matching between driving signals. With 120-Gb/s PM-QPSK per O-ISB channel, we successfully delivered 16 O-ISB channels in 8 wavelengths at 3.86-bits/s/Hz over 2100 km SSMF. In addition, the system performance was evaluated by using regular and enhanced Rx DSP, respectively. For metro and regional network applications where small footprint, low power consumption and low cost are required features, the proposed two-channels-per-wavelength O-ISB modulation may be considered an economic option.