Influence of the input signal's phase modulation on the performance of optical delay-based reservoir computing using semiconductor lasers.
Influence of the input signal's phase modulation on the performance of optical delay-based reservoir computing using semiconductor lasers.
复制标题
输入信号的相位调制对使用半导体激光器的基于光学延迟的储层计算性能的影响。
作者：
Ian Bauwens;K. Harkhoe;P. Bienstman;G. Verschaffelt;G. Van der Sande
在光子库计算中，具有延迟反馈的半导体激光器已被证明适合于有效地解决困难和耗时的问题。该系统中的输入数据通常以光学方式注入储层中。基于数值模拟，我们表明，性能在很大程度上取决于信息编码在这个光注入信号的方式。在我们的模拟中，我们比较了不同的输入配置组成的马赫-曾德尔调制器和相位调制器注入的信号。当调制注入信号的相位而不是仅调制其幅度时，我们观察到在一步提前的时间序列预测任务上的更好的性能。
In photonic reservoir computing, semiconductor lasers with delayed feedback have shown to be suited to efficiently solve difficult and time-consuming problems. The input data in this system is often optically injected into the reservoir. Based on numerical simulations, we show that the performance depends heavily on the way that information is encoded in this optical injection signal. In our simulations we compare different input configurations consisting of Mach-Zehnder modulators and phase modulators for injecting the signal. We observe far better performance on a one-step ahead time-series prediction task when modulating the phase of the injected signal rather than only modulating its amplitude.