Materials, Photonic Devices, and Sensors

Optical frequency domain reflectometry based single-mode fiber-optic distributed temperature sensor using synchronous polarization scrambling technique

[+] Author Affiliations
Ke Chen, Xinlei Zhou, Wei Peng, Qingxu Yu

Dalian University of Technology, School of Physics and Optoelectronic Technology, Linggong Road, Dalian 116023, China

Opt. Eng. 54(3), 037104 (Mar 11, 2015). doi:10.1117/1.OE.54.3.037104
History: Received December 5, 2014; Accepted February 9, 2015
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Abstract.  In order to reduce the polarization-induced impact on the incoherent optical frequency domain reflectometry based single-mode fiber-optic distributed temperature sensor, a synchronous polarization scrambling technique with a low-speed electrically driven polarization controller (EPC) is presented. The polarization-induced error is derived by error analysis. By simulating the distribution of the states of polarization on the Poincare sphere, optimized EPC driven parameters are selected. The polarization scrambling process is synchronous with the frequency response measurement of the Raman backscattered light. Additionally, the scrambling period is set to be equal to the measurement time of each frequency response. Experimental results show that the polarization-induced error is ±3°C, and it is basically in accord with the result of a theoretical error analysis. By using the synchronous polarization scrambling technique, the polarization-induced fluctuation of the measured temperature distribution has been almost eliminated.

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© 2015 Society of Photo-Optical Instrumentation Engineers

Citation

Ke Chen ; Xinlei Zhou ; Wei Peng and Qingxu Yu
"Optical frequency domain reflectometry based single-mode fiber-optic distributed temperature sensor using synchronous polarization scrambling technique", Opt. Eng. 54(3), 037104 (Mar 11, 2015). ; http://dx.doi.org/10.1117/1.OE.54.3.037104


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