基于受激布里渊散射效应的高精度可编程光滤波器

High-resolution Programmable Optical Filter Based on Stimulated Brillouin Scattering Effect

高速光通信系统、微波光子系统以及高精度光学计算等前沿应用领域都需要对光信号进行高精度处理,其核心是对光波频谱、微波频谱以及时域脉冲进行高精度调控。高精度可编程光滤波器是实现上述功能的上佳选择:通过对光谱的可编程滤波可直接实现光波频谱的调控,通过将微波信号加载到光波再对光谱进行可编程滤波可实现对微波频谱的调控,通过频谱调控结合时频变换可实现对时域脉冲的调控,从而实现大多数的光信号处理功能。因此,高精度可编程光滤波器是光学信息处理相关领域的核心仪器设备。本文介绍了可编程光滤波器的几种实现方案,着重介绍基于受激布里渊散射效应的高精度可编程滤波器的相关研究进展及关键技术。

High-resolution optical signal processing is highly required in various Frontier fields such as high-speed optical communication systems,microwave photonics systems and high-resolution optical computing.The fundamental functions are high-resolution control on optical spectrum,microwave spectrum and time-domain waveforms.High-resolution programmable optical filter is the best choice to realize the above functions,because it can directly control the optical spectrum by programmable optical filtering,control the microwave spectrum by flexibly filtering the microwave modulated optical spectrum,and control the waveform shape by frequency-manipulating combined with time-frequency mapping.Therefore,high-resolution programmable optical filter is the key instrument in optical signal processing fields.In this article,we review the implementation methods of different programmable optical filters,and specially introduce the research progress and key technologies of stimulated Brillouin scattering based high-resolution programmable optical filter.