Article

Photonic sensors review recent progress of fiber sensing technologies in Tianjin University

04/2012; 1(1):90-96. DOI:10.1007/s13320-010-0015-y pp.90-96

ABSTRACT The up to date progress of fiber sensing technologies in Tianjin University are proposed in this paper. Fiber-optic temperature
sensor based on the interference of selective higher-order modes in circular optical fiber is developed. Parallel demodulation
for extrinsic Fabry-Perot interferometer (EFPI) and fiber Bragg grating (FBG) sensors is realized based on white light interference.
Gas concentration detection is realized based on intra-cavity fiber laser spectroscopy. Polarization maintaining fiber (PMF)
is used for distributed position or displacement sensing. Based on the before work and results, we gained National Basic Research
Program of China on optical fiber sensing technology and will develop further investigation in this area.

KeywordsFiber sensing–high temperature–parallel demodulation–gas detection–distributed sensing

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Keywords

circular optical fiber
 
date progress
 
extrinsic Fabry-Perot interferometer
 
FBG
 
Gas concentration detection
 
KeywordsFiber sensing–high temperature–parallel demodulation–gas detection–distributed
 
PMF
 
selective higher-order modes
 
Tianjin University
 
white light interference
 

Tiegen Liu