Title :
High-Resolution Strain and Temperature Sensor Based on Distributed Bragg Reflector Fiber Laser
Author :
Shao, Li-Yang ; Dong, Xinyong ; Zhang, A. Ping ; Tam, Hwa-Yaw ; He, Sailing
Author_Institution :
Hong Kong Polytech. Univ., Kowloon
Abstract :
We present a high-resolution strain and temperature sensor by using a polarimetric distributed Bragg reflector fiber laser. The mean wavelength and polarization beat frequency of the laser output are utilized to determine the strain and temperature of the sensor. Experimental results show that the sensor has a capability of sensing strain and temperature simultaneously, with root mean square deviations of 9.3 mu epsiv and 0.05degC, respectively.
Keywords :
Bragg gratings; distributed Bragg reflector lasers; fibre lasers; fibre optic sensors; polarimetry; strain measurement; strain sensors; temperature measurement; temperature sensors; FBG; fiber Bragg grating; fiber-optic sensor; high-resolution strain sensor; polarimetric distributed Bragg reflector fiber laser; polarization beat frequency; root mean square deviations; temperature sensor; Bragg gratings; Capacitive sensors; Distributed Bragg reflectors; Fiber gratings; Fiber lasers; Laser modes; Optical fiber polarization; Optical fiber sensors; Pump lasers; Temperature sensors; Fiber Bragg grating (FBG); fiber laser; fiber-optic sensor; strain sensor; temperature sensor;
Journal_Title :
Photonics Technology Letters, IEEE
DOI :
10.1109/LPT.2007.903535
