High speed reconfigurable logic gates based on single semiconductor optical amplifier
Dong Jian-Ji, Zhang Xin-Liang, Wang Yang, Huang De-Xiu
华中科技大学光电子科学与工程学院，武汉 430074
Abstract 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.
Key words ：
semiconductor optical amplifier
all optical logic gate
transient cross phase modulation
Received: 2007-06-13
Published: 2008-04-25
Cite this article:
Dong Jian-Ji,Zhang Xin-Liang,Wang Yang et al. High speed reconfigurable logic gates based on single semiconductor optical amplifier. Acta Phys. Sin., 2008, 57(4): 2222-2228.
URL:
http://wulixb.iphy.ac.cn/CN/Y2008/V57/I4/2222
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2008, Vol. 57 
