High performance optical sensor based on double compound symmetric gratings  

作　　者：Chaoying Shi Xiuhong Liu Jinhua Hu Haiyan Han Jijun Zhao 史超颖;刘秀红;胡劲华;韩海燕;赵继军(School of Mathematics&Physics,Hebei University of Engineering,Handan 056038,China;School of Information&Electrical Engineering,Hebei University of Engineering,Handan 056038,China)

机构地区：[1]School of Mathematics&Physics,Hebei University of Engineering,Handan 056038,China [2]School of Information&Electrical Engineering,Hebei University of Engineering,Handan 056038,China

出　　处：《Chinese Optics Letters》2022年第2期40-44,共5页中国光学快报（英文版）

基　　金：This work was supported in part by the National Natural Science Foundation of China(Nos.61905060 and 21976049);Natural Science Foundation of Hebei Province(Nos.F2019402063 and F2019402240);Scientific Research Project of the Department of Education of Hebei Province(No.ZD2021019)。

摘　　要：A high performance optical sensor based on a double compound symmetric gratings(DCSGs) structure is designed. The reflection spectrum of the DCSG is investigated by utilizing a method that combines a theoretical model with the eigenmode information of the grating structure. The theoretical results, which are observed to agree well with those acquired by rigorous coupled-wave analysis, show that the linewidth of the reflection spectrum decreases upon the increasing distance between the grating strips. This research work will lay a foundation for studying high performance integrated optical sensors in miniature nanostructures.

关 键 词：compound gratings sensitivity SENSOR figure of merit 

分 类 号：TP212[自动化与计算机技术—检测技术与自动化装置]