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采用半导体光放大器(SOA)中的非线性效应可以实现多种多样的高速全光信号处理.利用SOA的非线性效应(包括四波混频、交叉增益调制、瞬态交叉相位调制等)实现了多种功能的逻辑运算,包括“与”、“或非”、“同或”、“或”和“非”.由于SOA用于全光信号处理的调制速率受到增益恢复时间较慢的限制而无法实现高速的信号处理,在SOA后面级联一个带宽为0.32nm的失谐滤波器可以提高SOA的工作速率,仅用一个SOA实现了40Gbit/s的多功能逻辑门.
A wide variety of high speed all-optical signal processing can be implemented using the nonlinear effects in a semiconductor optical amplifier (SOA), utilizing the nonlinear effects of SOA (including four-wave mixing, cross gain modulation, transient cross-phase modulation, etc.) The logical operations for many functions include “and ”, “or not,” “same or ”, “or ”, and “non ”. Since the SOA is used for all optical signal processing modulation The rate is limited by slower gain recovery time and can not achieve high-speed signal processing. Cascading behind a SOA with a tunable filter of 0.32 nm bandwidth can increase the operating speed of SOA, achieving more than 40 Gbit / s with just one SOA Functional logic gate.