Title :
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
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;
Journal_Title :
Photonics Technology Letters, IEEE
DOI :
10.1109/LPT.2008.2008657
