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Proceedings Paper

A hybrid Raman/FBG sensing system for simultaneous measurement of temperature and strain
Author(s): Fei Peng; Zengling Ran; Yunjiang Rao; Yongli Liu
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Paper Abstract

A hybrid Raman distributed temperature sensor (RDTS) and low-reflective fiber Bragg grating (LR-FBG) sensing system is proposed to achieve simultaneous measurement of distributed temperature and quasi-distributed strain. In this system, a method based on wavelength-swept optical time domain reflectometry (OTDR) is applied to interrogate the wavelength of reflective signal from the LR-FBGs with similar resonate wavelengths arranged in serial, while RDTS is realized by using the same light source. It is proved that such a Raman sensor and the LR-FBG sensor can be integrated into one system without interference by experiment.

Paper Details

Date Published: 7 November 2012
PDF: 4 pages
Proc. SPIE 8421, OFS2012 22nd International Conference on Optical Fiber Sensors, 8421A6 (7 November 2012); doi: 10.1117/12.975252
Show Author Affiliations
Fei Peng, Univ. of Electronic Science and Technology of China (China)
Zengling Ran, Univ. of Electronic Science and Technology of China (China)
Yunjiang Rao, Univ. of Electronic Science and Technology of China (China)
Yongli Liu, Univ. of Electronic Science and Technology of China (China)


Published in SPIE Proceedings Vol. 8421:
OFS2012 22nd International Conference on Optical Fiber Sensors
Yanbiao Liao; Wei Jin; David D. Sampson; Ryozo Yamauchi; Youngjoo Chung; Kentaro Nakamura; Yunjiang Rao, Editor(s)

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