Liquid Crystal-Embedded Hollow Core Fiber Temperature Sensor in Fiber Ring Laser

Lin, Weihao1,2; Zhou, Shengjie1; Liu, Yibin1; Vai, Mang, I2; Shao, Liyang1

2021-08-01

10.3390/app11157103

APPLIED SCIENCES-BASEL   影响因子和分区

2076-3417

An optical fiber temperature sensor based on Mach-Zehnder interferometer and thermo-optic effect of the liquid crystal (LC) in fiber ring laser (FRL) system is proposed and experimentally demonstrated. The LC is infiltrated into the core of hollow core fiber, and the resonant wavelength is more sensitive to temperature variation due to the interaction between the incident light and the cavity infiltrating liquid crystal with high thermal light coefficient. Meanwhile, the FRL system was further used to make the sensor have good performance in the case of high signal-to-noise ratio (similar to 35 dB), narrow half-height width (FWHM = 0.15 nm), and high sensitivity in the temperature range from 20 degrees C to 50 degrees C, with the maximum sensitivity of 1.318 nm/degrees C. As far as we know, in the FRL system, the liquid crystal material has a better temperature sensing performance than the previous fiber. Nevertheless, the system has the advantages of good repeatability, low cost, simple production, small volume, high sensitivity. In marine microbial culture and detection, it is necessary to carry out high sensitivity measurement within a small temperature variation range. This reliable and excellent temperature performance has a potential application prospect.

liquid crystal fiber ring laser fiber temperature sensor

SCI

英语

第一 ; 通讯

Chemistry ; Engineering ; Materials Science ; Physics

Chemistry, Multidisciplinary ; Engineering, Multidisciplinary ; Materials Science, Multidisciplinary ; Physics, Applied

WOS:000681898500001

MDPI

Web of Science

1.Southern Univ Sci & Technol, Dept Elect & Elect Engn, Shenzhen 518055, Peoples R China
2.Univ Macau, Fac Sci & Technol, Dept Elect & Comp Engn, Macau 999078, Peoples R China

Lin, Weihao,Zhou, Shengjie,Liu, Yibin,et al. Liquid Crystal-Embedded Hollow Core Fiber Temperature Sensor in Fiber Ring Laser[J]. APPLIED SCIENCES-BASEL,2021,11(15).

Lin, Weihao,Zhou, Shengjie,Liu, Yibin,Vai, Mang, I,&Shao, Liyang.(2021).Liquid Crystal-Embedded Hollow Core Fiber Temperature Sensor in Fiber Ring Laser.APPLIED SCIENCES-BASEL,11(15).

Lin, Weihao,et al."Liquid Crystal-Embedded Hollow Core Fiber Temperature Sensor in Fiber Ring Laser".APPLIED SCIENCES-BASEL 11.15(2021).