Design of a compact polarization beam splitter based on a deformed photonic crystal directional coupler

作     者：任刚 郑婉华 王科 杜晓宇 邢名欣 陈良惠 

作者机构：Nano-Optoelectronic LaboratoryInstitute of SemiconductorsChinese Academy of Sciences 

基　　金：supported by National Key Basic Research Special Fund of China (Grand No 2006CB921701-705) 

出 版 物：《Chinese Physics B》 (中国物理B（英文版）)

年 卷 期：2008年第17卷第7期

页      码：2553-2556页

摘      要：In this paper a compact polarization beam splitter based on a deformed photonic crystal directional coupler is designed and simulated. The transverse-electric （TE） guided mode and transverse-magnetic （TM） guided mode are split due to different guiding mechanisms. The effect of the shape deformation of the air holes on the coupler is studied. It discovered that the coupling strength of the coupled waveguldes is strongly enhanced by introducing elliptical airholes, which reduce the device length to less than ***. A finite-difference tlme-domain simulation is performed to evaluate the performance of the device, and the extinction ratios for both TE and TM polarized light are higher than 20 dB.

主 题 词：photonic crystal polarization beam splitter directional coupler 

学科分类：070207[070207] 07[理学] 0805[工学-能源动力学] 0704[理学-天文学类] 0702[理学-物理学类] 

核心收录：

D　O　I：10.1088/1674-1056/17/7/035

馆 藏 号：203224959...