基于波导与环形腔耦合的多通道光子晶体滤波器  

Multi-channel photonic crystal filter based on coupling of waveguide and ring cavity

作　　者：李韵嘉 李军[1] 文化锋[1] 王周益 金轶群 施锋 LI Yun-jia;LI Jun;WEN Hua-feng;WANG Zhou-yi;JIN Yi-qun;SHI Feng(College of Information Science and Engineering,Zhejiang University,Ningbo,315211,China;Department of Electrical Engineering and Renewable Energy Engineering,Oregon Institute of Technology,Oregon Klamath Falls City,97601,USA)

机构地区：[1]宁波大学信息科学与工程学院,浙江宁波315211 [2]俄勒冈理工学院电子工程与可再生能源工程系,美国俄勒冈州克拉马斯福尔斯市97601

出　　处：《光电子．激光》2021年第5期443-450,共8页Journal of Optoelectronics·Laser

基　　金：国家自然科学基金(61371061);宁波市自然科学基金(2018A610024)资助项目。

摘　　要：为了解决传统滤波器尺寸大、滤波性能差的问题,本文基于光子晶体线缺陷波导和环形谐振腔的耦合原理,设计了一种新型的多通道光子晶体滤波器。利用平面波展开法和时域有限差分法分别对滤波器的结构和传输特性进行了分析,结果表明:该结构滤波器具有优异的选频功能,可以实现1.5717μm、1.5834μm、1.5084μm、1.5195μm的多波长输出,各通道的透射率均达95%以上。由此可见,该滤波器的滤波性能优异,可以满足未来对滤波器高集成度和高效率的信号处理要求,在光通信领域中具有广阔的应用前景。In order to solve the problem of large size and poor filtering performance of traditional filters,a new type of multi-channel photonic crystal filter is designed.The structure is based on the coupling principle of photonic crystal line defect waveguide and ring resonator.The structure and transmission characteristics of the filter are analyzed by using the plane wave expansion method and the finite difference time domain method respectively.The results show that the filter has an excellent frequency selection function,which can achieve multi-wavelength output of 1.5717μm,1.5834μm,1.5084μm,1.5195μm,the transmittance of each channel is more than 95%.It can be seen that the filter has excellent filtering performance,which can meet the requirements of high integration and high efficiency of filters for signal processing in the future,and we can know there is a great prospect of application in the field of optical communications.

关 键 词：光子晶体 滤波器 反射结构 多通道 谐振条件 

分 类 号：TN256[电子电信—物理电子学]