文献类型：期刊文献

英文题名：Fiber Optic Temperature Sensor Based on the Harmonic Vernier Effect Generated by Two Sagnac Interferometers

作者：Yang, Yuqiang[1,2];Zhang, Yuying[2];Mu, Xiaoguang[3];Sun, Lin[2];Wang, Ji[2];Li, Yuting[4];Gao, Jiale[2];Bi, Lei[5]

机构：[1]Guangdong Ocean Univ, Shenzhen Inst, Shenzhen 518120, Peoples R China;[2]Guangdong Ocean Univ, Sch Elect & Informat Engn, Zhanjiang 524088, Peoples R China;[3]Guangdong Ocean Univ, Sch Mech & Power Engn, Zhanjiang 524088, Peoples R China;[4]Guangdong Ocean Univ, Sch Shipbuilding & Shipping, Zhanjiang 524088, Peoples R China;[5]Guangdong Ocean Univ, Coll Continuing Educ, Zhanjiang 524088, Peoples R China

年份：2024

卷号：24

期号：8

起止页码：12419

外文期刊名：IEEE SENSORS JOURNAL

收录：SCI-EXPANDED(收录号：WOS:001279544600001)、、EI(收录号：20241215768023)、Scopus(收录号：2-s2.0-85187984844)、WOS

基金：No Statement Available

语种：英文

外文关键词：Harmonic Vernier effect (HVE); normal Vernier effect (NVE); optical fiber sensor; Sagnac interferometer (SI)

外文摘要：A fiber-optic temperature sensor based on the harmonic Vernier effect (HVE) was proposed, which consists of a sensing Sagnac interferometer (SSI) and a reference Sagnac interferometer (RSI) in parallel. Different order HVEs are generated by controlling the length of the panda fiber in the SSI to be about an integer multiple of that in the RSI. The sensitivity and detuning of different order HVEs compared with the normal Vernier effect (NVE) are investigated, and the results show that the HVEs have almost the same temperature sensitivity as the NVE when they have the same magnification factor, while their detunings are much larger than that of the NVE, and the higher the order of the HVE, the larger the detuning. As we all know that the larger the detuning, the easier the magnification factor is to be controlled, that is, the easier the sensor is to be prepared, so from the point of view, the sensors based on the HVEs are better than those based on the NVE. This conclusion is also suitable for other fiber-optic sensors based on Vernier effect.