Effects of coupling and phase imperfections in programmable photonic hexagonal waveguide meshes
Effects of coupling and phase imperfections in programmable photonic hexagonal waveguide meshes
复制标题
可编程光子六边形波导网格中耦合和相位缺陷的影响
作者：
I. Zand;W. Bogaerts
我们提出了一个研究的效果上的传输和串扰的可编程光子网格的反馈回路组成的可调谐耦合器和移相器的缺陷。当耦合器和移相器稍微偏离其标称值时，这种网格中的许多元件可以产生大量寄生路径。通过Monte Carlo模拟，我们发现相位和耦合中的小随机缺陷（<1.0%）可以引入不必要的干扰和谐振，并显着恶化电路的频率响应。我们还表明，在存在的缺陷，未使用的耦合器的编程策略，可以减少这种寄生效应。
We present a study of the effect of imperfections on the transmission and crosstalk in programmable photonic meshes with feedback loops consisting of tunable couplers and phase shifters. The many elements in such a mesh can generate a multitude of parasitic paths when the couplers and phase shifters deviate even slightly from their nominal value. Performing Monte Carlo simulations, we show that small stochastic imperfections in the phase and coupling (<1.0%) can introduce unwanted interferences and resonances and significantly deteriorate the frequency response of the circuit. We also demonstrate that, in the presence of imperfections, the programming strategy of the unused couplers can reduce effects of such parasitics.