Highly Sensitive Salinity/Refractive Index Sensor based on Fiber Ring Laser with Tapered Fiber

Jie Hu; Liyang Shao; Weihao Lin; Fang Zhao; Dongrui Xiao; Chenlong Xue; Jinna Chen; Huanhuan Liu; Perry Ping Shum

10.1109/ICOCN55511.2022.9901008

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

In this paper, a fiber ring laser with single mode fiber - tapered no core fiber - single mode fiber structure (STNS structure) was proposed and demonstrate to be an ultrahigh sensitive refractive index and salinity sensor. The laser located at $\sim 1555$ nm, with a narrow 3-dB bandwidth of 0.06 nm and high signal-to-noise ratio of $\sim 45\mathbf{dB}$. The NaCI salinity sensitivity and RI sensitivity of our designing were 0.627 nm/(g/L) and 3761.2 nm/RIU, respectively, with a good linearity of 0.998. It has potential to be widely applied in chemical and biological analysis, ocean monitoring and protection of ecosystems.

Refractive index sensing salinity sensing fiber laser tapered fiber

第一

IEEE

Department of Electrical and Electronic Engineering, Southern University of Science and Technology, Shenzhen, China

Jie Hu,Liyang Shao,Weihao Lin,et al. Highly Sensitive Salinity/Refractive Index Sensor based on Fiber Ring Laser with Tapered Fiber[C],2022:1-3.