基于半导体光放大器的新型全光逻辑与门

为了实现基于半导体光放大器的全光逻辑与门,采用了在半导体光放大器构成的马赫-曾德尔干涉仪的基础上,注入外部连续光的方法。以半导体光放大器速率方程为基础,对设计方案进行了理论分析和仿真验证,取得了不同重复周期、不同脉冲宽度的光脉冲序列经过全光逻辑与门操作后的输出数据。结果表明,该方案能对传输速率为10Gbit/s或以下的信号进行正确与运算,同时,外光注入可以有效提高半导体光放大器信号处理速度。这一结果对基于半导体光放大器的全光逻辑的设计是有帮助的。

Novel all-optical logic AND gate based on SOA-MZI and external optical injection

With the aid of external optical injection, a novel all-optical logic gate based on SOA-MZI scheme is proposed in this paper. The carrier recovery time of SOA is reduced greatly under the external optical injection, as a result, logic AND operation of pulses as short as 20ps can be achieved. Meanwhile, by using the SOA’s rate equations, numerical simulation of this logic AND gate has been made, variation of output with external optical injection and input signals are analyzed.