一种亚波长高折射率差光栅滤波器的设计与分析  

Design and Analysis of Optical Filter Based on Subwavelength High-Contrast Grating

作　　者：胡劲华[1,2] 刘秀红[3] 赵继军[1,2] 任丹萍[1,2] 黄永清[4] 任晓敏[4] 

机构地区：[1]河北工程大学信息与电气工程学院,河北邯郸056038 [2]光纤通信与宽带接入技术邯郸市重点实验室,河北邯郸056038 [3]河北工程大学理学院,河北邯郸056038 [4]北京邮电大学信息光子学与光通信国家重点实验室,北京100876

出　　处：《激光与光电子学进展》2016年第5期108-112,共5页Laser & Optoelectronics Progress

基　　金：河北省自然科学基金(A2015402035);河北省高等学校科学技术研究青年基金(QN2014134;QN2016090);河北工程大学校学术骨干基金

摘　　要：为了便于理解亚波长高折射率差光栅的谐振滤波机制,将光栅看作一个光学谐振器,用时域耦合模理论分析光栅滤波器的透射光谱,同时也验证了分析结果与严格耦合波算法仿真结果的一致性。在此基础上,分别分析入射角、光栅宽度以及温度对光栅滤波器的透射特性的影响及机理。研究结果表明通过改变入射角可以调控光栅滤波器透射光谱的线宽,而在小范围内改变光栅宽度和工作温度对透射光谱线宽没有影响。Subwavelength high contrast grating （SHCG） is considered as an optical resonator for understanding its resonant filtering mechanism clearly. The transmission spectrum of SHCG is investigated by employing temporal coupled mode theory. The calculated result is in good agreement with the simulation obtained by using the rigorous coupled-wave analysis method. In addition, the influence and mechanism of the filterr s transmittance on incident angle, grating width and temperature are also investigated, respectively. The simulated results show that the spectrum linewidth of SHCG filter is mainly controlled by the incident angle. However, the spectrum linewidth is insensitive to the minor change of the grating width and the operating temperature.

关 键 词：光栅 亚波长光栅 光滤波器 谐振器 时域耦合模理论 

分 类 号：O436[机械工程—光学工程]