High Sensitivity Optical Fiber FP Interferometer based on Vernier Effect for Temperature Sensing

Fang Zhao1; Jie Hu1; Weihao Lin1; Dongrui Xiao1; Shuaiqi Liu1; Feihong Yu1; Guomeng Zuo1; Guoqing Wang2; Liyang Shao1; Perry Ping Shum1

10.1109/ICOCN55511.2022.9901121

2022

2330-7986

978-1-6654-5899-3

2022 20th International Conference on Optical Communications and Networks (ICOCN)

1-3

12-15 Aug. 2022

Shenzhen, China

A temperature sensor based on fiber Fabry Perot interferometer (FPI) is proposed and demonstrated, which is composed of hollow core fiber (HCF) and cascaded multimode fiber (MMF). The optical Vernier effect is successfully realized through FP cavities with different lengths of HCF and MMF, and the temperature sensitivity is significantly improved. The temperature sensitivity of 69.2 $\text{pm}/^{\circ}\mathrm{C}$ is achieved by detecting the generated spectrum envelope through the FPI's spectrum. A high sensitivity optical fiber temperature sensing system with low complexity, good linearity, short response time, and low cost can be realized with the proposed method.

Temperature measurement Vernier effect Fabry-Perot interferometer fiber optical sensor

第一

IEEE

1.Department of Electrical and Electronic Engineering, Southern University of Science and Technology, Shenzhen, China
2.School of Microelectronics, Shenzhen Institute of Information Technology, Shenzhen, China

Fang Zhao,Jie Hu,Weihao Lin,et al. High Sensitivity Optical Fiber FP Interferometer based on Vernier Effect for Temperature Sensing[C],2022:1-3.