光通信技术2017，Vol.41Issue(5)：45-48,4.DOI:10.13921/j.cnki.issn1002-5561.2017.05.013
基于传导模迁移的光子晶体光开关的设计
Design of photonic crystal optical switch based on dynamical shift of transmission mode
摘要
Abstract
A structure of Mach-Zehnder optical switch is proposed based on the characteristics of the photonic crystal waveguide transmission mode varying with the refractive indices change of the waveguide fringe dielectric rods.The optical transmission characteristic is controlled by adjusting the refiactive index of a waveguide fringe dielectric rod in the symmetric photonic crystal waveguide structure.The band diagram for guided mode ofphotonic crystal waveguide is calculated using the plane wave expansion method,when the refractive index of rods in waveguide fringe region is different from the refractive index of photonic crystal dielectric rods.According to the interference principle of light,the tunable region length L is calculated when the energy of light can't meet at output waveguide.When the refractive index of the tunable dielectric rod is 2.8,it is further concluded that the length L of the adjustable region is 8a corresponding to the normalized frequency 0.384.The device can realize the function of the switch.Finally,the transmission characteristic of the device is simulated using the finite-difference time-domain method.关键词
光开关/光子晶体/时域有限差分法/平面波展开法Key words
optical switch/photonic crystal/finite-difference time-domain method/plane wave expansion method分类
数理科学引用本文复制引用
余建立,叶松,邵瑞..基于传导模迁移的光子晶体光开关的设计[J].光通信技术,2017,41(5):45-48,4.基金项目
安徽省高校自然科学基金重点项目(KJ2016A508,KJ2016A509)资助 （KJ2016A508,KJ2016A509）
安徽省高校优秀青年人才支持计划重点项目(gxyqZD2016287)资助. （gxyqZD2016287）
