基于光子晶体波导环形共振腔的分束管理特性研究

Study on Splitting Management Characteristics of Ring Resonance Cavity Based on Photonic Crystal Waveguide

提出一种基于正方晶格二维光子晶体波导环形共振腔结构。通过有限元分析方法数值模拟其传输特性，研究发现，通过改变环形共振腔内可调介质柱的结构参数，可以有效地调节共振腔的共振频率；并根据共振腔不同的共振模式可以设计出多通道输出的分束器，实现了良好的带通滤波和分束特性。以1×2的分束器为例，通过改变共振腔内可调介质柱结构参数，可以实现对各端口的输出光强的有效调制。此特性在全光网络中具有一定的潜在应用价值。

A kind of waveguide ring resonator structures based on two-dimensional square lattice photonic crystal is reported. The transmission characteristics are researched by finite element methodnumerical simulation. The results show that by changing the structural parameters of adjustable rods in ring cavity, the resonance frequency of resonance cavity can be effectively adjusted, and according to the diffident resonance modes of the resonance cavity, a good band-pass filter and beam splitting characteristics are achieved. As an example with a 1 X 2 beaming splitter, by changing the structure parameters of adjustable rods in ring cavity regularly, the intensity modulation to each port output light can be realized. This feature has certain potential application value in the all-optical network.