Ultrasensitive refractive index sensor based on parallel-connected dual Fabry-Perot interferometers with Vernier effect
Ultrasensitive refractive index sensor based on parallel-connected dual Fabry-Perot interferometers with Vernier effect
复制标题
基于游标效应并联双法布里-珀罗干涉仪的超灵敏折射率传感器
DOI：
10.1016/j.sna.2019.03.011
复制
发表时间：
2019-05-01
影响因子：
4.6
通讯作者：
Li, Yuqi
中科院分区：
文献类型：
--
作者：
Yao, Tianjun;Pu, Shengli;Li, Yuqi
A kind of ultrasensitive refractive index sensor based on parallel-connected dual Fabry-Perot interferometers (FPIs) with Vernier effect is proposed and demonstrated. The open and closed cavity FPIs are used as the sensing and reference units, respectively. The Vernier effect is realized by superimposing the reflective comb spectra of the dual FPIs, which have slightly different free spectral ranges. The open groove of the open cavity FPI provides a convenient, efficient and economical method for filling in or draining out the cavity. The stability, repeatability and temperature response of the structures are investigated. Experimental results indicate that the proposed sensing structure features high sensitivity, good stability, quick and accurate measurement. (C) 2019 Elsevier B.V. All rights reserved.
