A Highly Sensitive Temperature Sensor Based on a Liquid-Sealed S-Tapered Fiber

Author

Rui Yang ; Yong-Sen Yu ; Yang Xue ; Chao Chen ; Chuang Wang ; Feng Zhu ; Bao-Lin Zhang ; Qi-Dai Chen ; Hong-Bo Sun

Author_Institution

State Key Lab. on Integrated Optoelectron., Jilin Univ., Changchun, China

Volume

25

Issue

9

fYear

2013

fDate

41395

Firstpage

829

Lastpage

832

Abstract

A highly sensitive temperature sensor based on the liquid-sealed S fiber taper (SFT) in a capillary is proposed and experimentally demonstrated. The temperature independent SFT is turned into a sensitive temperature sensor by the thermo-optic effect of the RI liquid and the thermal expansion of the sealant. The total length of the device is 10 mm, which can be further shortened to 1 mm if necessary. The temperature sensing mechanism of the liquid-sealed SFT is analyzed in detail and experimental results show the sensitivity reaches as high as -1.403 nm/°C. The temperature sensitivity contributions from different mechanisms are also obtained experimentally.

Keywords

fibre optic sensors; temperature sensors; thermal expansion; thermo-optical devices; RI liquid; capillary; highly sensitive temperature sensor; liquid-sealed S-tapered fiber; liquid-sealed SFT; sealant thermal expansion; size 10 mm; temperature independent SFT; temperature sensing mechanism; thermo-optic effect; Liquids; Optical fiber sensors; Optical fibers; Sensitivity; Temperature measurement; Temperature sensors; Fiber optic sensors; fiber tapers; temperature sensors;

fLanguage

English

Journal_Title

Photonics Technology Letters, IEEE

Publisher

ieee

ISSN

1041-1135

Type

jour

DOI

10.1109/LPT.2013.2252336

Filename

6478778