Collection Of theses on high power laser and plasma physics, 2012, 10 (1): 072901, Published Online: Jun. 2, 2017  

Application of high-precision temperature-controlled FBG filter and light source self-calibration technique in the BOTDR sensor system

Author Affiliations
1 Shanghai Institute of Optics and Fine Mechanics, Chinese Academy of Sciences, Shanghai 201800, China
2 Graduate University of the Chinese Academy of Sciences, Beijing 100049, China
Abstract
A high-precision temperature-controlled narrow band-stop fiber Bragg grating (FBG) filter and light source self-calibration technique are proposed for application in the Brillouin optical time domain reflectometer (BOTDR) sensor system. With the proposed application, the BOTDR sensor system maintains good long-term stability and temperature precision through the reduction of the center wavelength drift in the FBG filters and corresponding decrease in the changes in light intensity. The experiment result shows that temperature precision of 1°C and temperature stability of 0.7°C can be achieved in a temperature sensor over a range of 8 km.

Jiacheng Hu, Fuchang Chen, Chengtao Zhang, Zunqi Lin. Application of high-precision temperature-controlled FBG filter and light source self-calibration technique in the BOTDR sensor system[J]. Collection Of theses on high power laser and plasma physics, 2012, 10(1): 072901.

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