An Integrated Optical Fiber Sensor for Simultaneous Measurement of Temperature and Salinity Based on Sagnac Loop and TFBG

Yuhui Liu1,2; Weihao Lin1; Xuming Zhang2; Li-yang Shao1

10.1109/ICOCN63276.2024.10648395

2024-07-29

2330-7986

979-8-3503-6766-9

2024 22nd International Conference on Optical Communications and Networks (ICOCN)

26-29 July 2024

Harbin, China

In this letter, we proposed and demonstrated a dual-parameter fiber sensor for simultaneous measurement of temperature and salinity based on Tilted Fiber Bragg Grating (TFBG) and Sagnac loop (SL). Thanks to the extremely high temperature sensitivity of polarization maintaining fiber (PM F) in SL, the designed sensor has a temperature sensitivity of 1.395 nm/°C. Besides, the temperature sensitivity of the core mode in TFBG is 0.009 m/°C and the sensitivity for salinity detection equals to 0.004 nm/% within the wavelength of cladding mode range from 1534 nm to 1535 nm, achieving the measurement of temperature and salinity concurrently. The designed temperature and salinity fiber sensor has certain potential in marine environmental detection.

第一

1.Department of Electronic and Electrical Engineering, Southern University of Science and Technology, Shenzhen, China
2.Department of Applied Physics, The Hong Kong Polytechnic University, Hong Kong, China

Yuhui Liu,Weihao Lin,Xuming Zhang,et al. An Integrated Optical Fiber Sensor for Simultaneous Measurement of Temperature and Salinity Based on Sagnac Loop and TFBG[C],2024.