基于半导体光放大器的新型全光逻辑与门

Novel all-optical logic AND gate based on semiconductor optical amplifier

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。

With the aid of external optical injection, a novel all-optical logic gate based on Mach-Zehnder interferometer composed of semiconductor optical amplifier （SOA-M-ZI） was proposed. Meanwhile, by means of rate equations of the SOA, the logic AND gate was simulated and analyzed. As a result, the logic AND gate can process signals with transmission speed of 10Gbit/s or below, and the external optical injection can effectively enhance the signal processing speed of SOA. It is useful to design all-optical logic gates based on SOA.