Temperature-Insensitivity Bending Sensor Based on Cladding-Mode Resonance of Special Optical Fiber

Author

Pang, Fufei ; Liang, Wenbin ; Xiang, Wenchao ; Chen, Na ; Zeng, Xianglong ; Chen, Zhenyi ; Wang, Tingyun

Author_Institution

Key Lab. of Specialty Fiber Opt. & Opt. Access Network, Shanghai Univ., Shanghai

Volume

21

Issue

2

fYear

2009

Firstpage

76

Lastpage

78

Abstract

A temperature-insensitive fiber bending sensor is demonstrated by using a special optical fiber with cladding-mode resonance. The special fiber with a pure silica core and a fluorine-doped silica inner cladding shows strong cladding-mode resonance. The single-mode fiber (SMF)-special fiber-SMF is proposed as a sensor head to monitor the cladding-mode resonance. The response of the resonant spectrum exhibits high sensitivity to bending curvature and inherent insensitivity to temperature. The proposed special fiber bending sensor is simple and inexpensive.

Keywords

bending; fibre optic sensors; mechanical variables measurement; optical fibre cladding; silicon compounds; bending curvature; cladding-mode resonance; fiber bending sensor; fluorine-doped silica; resonant spectrum; silica core; single-mode fiber; special optical fiber; temperature insensitivity; Bending sensor; cladding-mode resonance; special fiber; temperature-insensitivity;

fLanguage

English

Journal_Title

Photonics Technology Letters, IEEE

Publisher

ieee

ISSN

1041-1135

Type

jour

DOI

10.1109/LPT.2008.2008657

Filename

4663497