Open AccessHigh speed reconfigurable logic gates based on single semiconductor optical amplifier
Author(s) -
Jianji Dong,
Chi Zhang,
Yang Wang,
Dexiu Huang
Publication year - 2008
Publication title -
wuli xuebao
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.199
H-Index - 47
ISSN - 1000-3290
DOI - 10.7498/aps.57.2222
Subject(s) - optical amplifier , modulation (music) , xnor gate , logic gate , bandwidth (computing) , computer science , electronic engineering , optoelectronics , physics , optics , telecommunications , nand gate , laser , algorithm , engineering , acoustics
The nonlinearities of a semiconductor optical amplifier (SOA) are exploited to realize various all-optical signal processing at ultrahigh speed. We demonstrate reconfigurable logic gates with XNOR, AND, NOR, OR, and NOT functions based on various nonlinearities of single SOA, including four-wave mixing, cross gain modulation and transient cross phase modulation. Since the modulation speed of the SOA is limited by the recovery time of carrier density, a detuning optical bandpass filter with 0.32nm-bandwidth follows the SOA to enhance the modulation speed. Multi-logic gates at 40Gbit/s are obtained with single SOA.