文献类型：期刊文献

英文题名：Fiber optic temperature sensor based on Vernier effect generated by a linear sagnac interferometer in parallel with a Fabry-Perot interferometer

作者：Yang, Yuqiang[1,2,3,4];Xia, Han[1,3];Mu, Xiaoguang[2];Huang, Zhihao[1,3];Mo, Chengyu[1,3];Zhang, Yuying[1,3];Li, Yuting[1,3]

机构：[1]Guangdong Ocean Univ, Guangdong Prov Key Lab Intelligent Equipment South, Zhanjiang 524088, Peoples R China;[2]Guangdong Ocean Univ, Coll Mech Engn, Zhanjiang 524088, Peoples R China;[3]Guangdong Ocean Univ, Res Ctr Guangdong Smart Oceans Sensor Networks & E, Zhanjiang 524088, Peoples R China;[4]Guangdong Ocean Univ, Guangdong Prov Engn Res Ctr Ship Intelligence & Sa, Zhanjiang 524088, Peoples R China

年份：2025

卷号：575

外文期刊名：OPTICS COMMUNICATIONS

收录：SCI-EXPANDED(收录号：WOS:001358745400001)、、EI(收录号：20244717376642)、Scopus(收录号：2-s2.0-85208956453)、WOS

语种：英文

外文关键词：Optic fiber sensor; Linear sagnac interferometer(LSI); Circular sagnac interferometer (CSI); Vernier effect; Temperature sensor

外文摘要：A novel fiber-optic temperature sensor based on a Linear Sagnac Interferometer (LSI) in parallel with a FabryPerot Interferometer (FPI) has been developed. This sensor leverages the superposition of the FPI and LSI to generate a Vernier effect. Theoretical and experimental results demonstrate that within the temperature range of 40 degrees C-50 degrees C, the temperature sensitivity of the parallel structure reaches 13.27 nm/degrees C, aligning well with theoretical predictions. Notably, when the LSI and Circular Sagnac Interferometer (CSI) exhibit identical temperature sensitivities and free spectral ranges (FSR), the length of the LSI is only half that of the CSI. The LSI is constructed from a single segment of Panda fiber and does not form a loop. Consequently, this sensor is simpler and easier to manufacture compared to conventional CSI sensors, offering significant advantages in structural simplicity and fabrication efficiency. This makes the proposed sensor a valuable reference for sensing applications in diverse environments.