2种不同结构的1维光子晶体窄带滤波器  

Two types of one-dimensional photonic crystal narrow-band filters with different structures

作　　者：张兰[1] 戚子昂 马会中[1] ZHANG Lan;QI Ziang;MA Huizhong(Department of Mechanics and Safety Engineering,Zhengzhou University,Zhengzhou,Henan 450000,China)

机构地区：[1]郑州大学力学与安全工程学院,河南郑州450000

出　　处：《光电子．激光》2022年第4期356-363,共8页Journal of Optoelectronics·Laser

基　　金：中原院士基金(2019-12-01)资助项目。

摘　　要：随着光通信技术的发展,滤波器在光的波分复用技术中具有举足轻重的作用。但是,传统滤波器存在尺寸大、滤波性能差、制备较复杂的问题。对此本文设计了2种形如(AB)^(N)B^(M)(AB)^(N)、(AB)^(N)(BA)^(N)结构的1维光子晶体窄带滤波器,并利用传输矩阵法对这两种光子晶体滤波器进行了计算,针对其光子禁带和滤波性能进行了分析,在优化结构设计的基础上探究了不同参数对于滤波性能的影响。结果表明:1维叠层缺陷型光子晶体窄带滤波器和1维镜像型光子晶体窄带滤波器在一定的波长范围内,均可以获得一个较窄的透过带,叠层缺陷型光子晶体窄带透射率接近99%,镜像型光子晶体窄带透射率为96%,滤波性能优异,能够满足窄带滤波技术的要求,并有望在光波分复用技术中获得广泛的应用。With the popularity of optical communication technology, there is a growing recognition that the filter plays a significant role in wavelength division multiplexing technology.However, traditional filters have some disadvantages which are supposed to be improved and optimized, such as large size, poor filtering performance and complicated preparation.In order to solve these problems effectively, this paper designed two types of one-dimensional photonic crystal narrow-band filters with (AB)^(N)B^(M)(AB)^(N) and (AB)^(N)(BA)^(N) structures.At the same time, the transfer matrix method was be used to calculate two photonic crystal filters.The photonic band gaps were analyzed and the effect of different parameters on the filtering performance was explored on the basis of the optimized design structure.The results show that: the one-dimensional laminated defect type photonic crystal narrow-band filter and the one-dimensional mirror image type photonic crystal narrow-band filter are able to obtain a narrow transmission band within a certain wavelength range, the transmittance at the narrow band of laminated defect type photonic crystal is close to 99% and the mirror image type photonic crystal′s transmittance is 96%,as well as present excellent filtering performance, which can meet the narrowband filtering technical requirements.It is expected to be widely used in optical wavelength division multiplexing technology.

关 键 词：光子晶体 光学薄膜 光子禁带 窄带滤波 

分 类 号：TN2[电子电信—物理电子学]