High performance optical sensor based on double compound symmetric gratings

作者：Chaoying Shi, Xiuhong Liu, Jinhua Hu, Haiyan Han, Jijun Zhao · 发表于：Chinese Optics Letters · 年份：2021 · DOI：10.3788/col202220.021201 · 被引用次数：6 · 研究领域：Optical Coatings and Gratings、Photonic and Optical Devices、Advanced Fiber Optic Sensors

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.