基于双环形谐振腔结构的二维光子晶体波分复用器

Two-dimensional photonic crystal wavelength division multiplexer based on double ring resonator cavity structure

为了实现光波的波分复用功能并且提高光波的辐射效率,设计了一种基于双环形谐振腔结构的二维光子晶体波分复用器。首先,对光子晶体结构参数进行设计,通过谐振腔和微腔耦合选择不同频率的光波,设计光子晶体滤波器模型;然后,根据模式耦合理论确定主干波导与谐振腔之间的最佳耦合条件,设计波分复用器;最后,加入散射介质柱并调整两谐振腔之间的相对位置优化波分复用器,提高光波的透射率。实验结果表明:该复用器结构实现了对1.562μm、1.544μm、1.451μm、1.436μm、1.366μm和1.322μm这6种频率光波的波分复用,光波最大辐射效率能达到96%,器件尺寸仅为13.44μm×16μm。

In order to realize the wavelength division multiplexing function of light wave and improve the radiation efficiency of light wave,a two-dimensional photonic crystal wavelength division multiplexer based on double ring resonator cavity structure is designed.Firstly,the structural parameters of photonic crystal are designed.Through the coupling of resonator cavity and microcavity,the light waves with different frequencies are selected,and the photonic crystal filter model is designed.Then,according to the mode coupling theory,the optimal coupling conditions between the backbone waveguide and the resonator cavity are determined,and the wavelength division multiplexer is designed.Finally,the scattering dielectric column is added and the relative position between the two resonators is adjusted to optimize the wavelength division multiplexer to improve the transmittance of light wave.The experimental results show that the multiplexer structure realizes the improvement of 1.562 μm、1.544 μm、1.451 μm、1.436 μm、1.366 μm and 1.322 μm,the maximum radiation efficiency of light wave can reach 96% and the device size is only13.44 μm× 16 μm.