Open AccessPolarization insensitive all-optical up-conversion for ROF systems based on parallel pump FWM in a SOA
Author(s) -
Jia Lu,
Ze Dong,
Zizheng Cao,
Lin Cui,
Shuangchun Wen,
Yu Jian
Publication year - 2009
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.17.006962
Subject(s) - optical amplifier , optics , sideband , polarization (electrochemistry) , four wave mixing , physics , optical filter , local oscillator , optoelectronics , materials science , phase noise , nonlinear optics , laser , microwave , chemistry , quantum mechanics
We have proposed and experimentally investigated polarization insensitive all-optical up-conversion for ROF system based on FWM in a semiconductor optical amplifier (SOA). The parallel pump is generated based on odd-order optical sidebands and carrier suppression using an external intensity modulator and a cascaded optical filter. Therefore, the two pumps are always parallel and phase locked, which makes system polarization insensitive. After FWM in a SOA and optical filtering, similar to single sideband (SSB) 40 GHz optical millimeter-wave is generated only using 10 GHz RF as local oscillator (LO). The receiver sensitivity at a BER of 10(-9) for the up-converted signals is -28.4 dBm. The power penalty for the up-converted downstream signals is smaller than 1 dBm after 20 km SSMF-28 transmission.