A fiber ring laser sensor with a side polished evanescent enhanced fiber for highly sensitive temperature measurement

Lin，Weihao1,2; Liu，Yibin1; Shao，Liyang1; Vai，Mang I.2

2021

10.3390/mi12050586

Micromachines   影响因子和分区

2072-666X

We demonstrate a highly sensitive and practical fiber-based temperature sensor system. The sensor is constructed based on a fiber ring laser (FRL) as well as a side-polished fiber filled with isopropanol. The laser cavity of the sensing part fiber is polished by the wheel fiber polishing system with residual thickness (RT) is selected to detect the temperature in the FRL. Thanks to the high thermo-optic coefficient of isopropanol, the sensitivity of the proposed temperature sensor could be effectively improved by filling isopropanol in the cost-less side polished single mode fiber. Refractive index (RI) of isopropanol changes with the surrounding temperature variation allowing high-sensitivity temperature sensing. Experimental results demonstrate that the side polished fiber can efficiently excite high-order cladding modes which enhance the modular interference increase the interaction between the evanescent wave and the isopropanol. Besides, the results show that the sensitivity can be as high as 2 nm/ C in the temperature range of 25–35 C.

Fiber ring laser Isopropanol Side-polished fiber Temperature sensor

SCI ; EI

英语

第一 ; 通讯

WOS:000662393500001

20212310460790

Refractive index ; Ring lasers ; Sensitivity analysis ; Single mode fibers ; Temperature measurement ; Temperature sensors

Light/Optics:741.1 ; Fiber Optics:741.1.2 ; Lasers:744 ; Mathematics:921 ; Temperature Measuring Instruments:944.5 ; Temperature Measurements:944.6

2-s2.0-85107235606

Scopus

1.Department of Electrical and Electronic Engineering,Southern University of Science and Technology,Shenzhen,518055,China
2.Department of Electrical and Computer Engineering,Faculty of Science and Technology,University of Macau,Macau,999078,China

Lin，Weihao,Liu，Yibin,Shao，Liyang,et al. A fiber ring laser sensor with a side polished evanescent enhanced fiber for highly sensitive temperature measurement[J]. Micromachines,2021,12(5).

Lin，Weihao,Liu，Yibin,Shao，Liyang,&Vai，Mang I..(2021).A fiber ring laser sensor with a side polished evanescent enhanced fiber for highly sensitive temperature measurement.Micromachines,12(5).

Lin，Weihao,et al."A fiber ring laser sensor with a side polished evanescent enhanced fiber for highly sensitive temperature measurement".Micromachines 12.5(2021).