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在双环耦合全光缓存器的基础上分析了全光分组交换网络中以半导体光放大器(SOA)为相移器件的反馈型全光缓存器输出的信号损伤,包括SOA的非线性及载流子恢复时间限制引起的脉冲畸变与连续码流中的图样失真和SOA的自发辐射噪声累积引起的信噪比恶化及缓存器结构引起的“漏光”问题.理论分析及实验结果表明,在采用反相控制并注入高功率控制光的情况下,脉冲畸变与图样失真被抑制,由信噪比恶化及漏光决定的光分组的缓存圈数被限制在20—30圈.得到的结果对基于SOA的光缓存器及逻辑器件同样具有借鉴作用.
Based on the double-ring coupled all-optical buffer, the signal impairments of the output all-optical buffer with semiconductor optical amplifier (SOA) as the phase-shift device in the all-optical packet-switched network are analyzed, including the nonlinearity of SOA and the carrier The pulse distortion caused by the recovery time limit and the pattern distortion in the continuous code stream and the deterioration of the signal-to-noise ratio caused by the accumulation of spontaneous emission noise of the SOA and the “light leakage” caused by the buffer structure.Theoretical analysis and experimental results show that, In the case of inverting control and injecting high-power control light, the pulse distortion and pattern distortion are suppressed, and the number of buffered optical packets, which is determined by the deterioration of signal-to-noise ratio and light leakage, is limited to 20-30 laps. The optical buffer and logic devices also have reference.