A hybrid Raman/FBG sensing system for simultaneous measurement of temperature and strain

Fei Peng; Zengling Ran; Yunjiang Rao; Yongli Liu

doi:10.1117/12.975252

7 November 2012 A hybrid Raman/FBG sensing system for simultaneous measurement of temperature and strain

Fei Peng, Zengling Ran, Yunjiang Rao, Yongli Liu

Proceedings Volume 8421, OFS2012 22nd International Conference on Optical Fiber Sensors; 8421A6 (2012) https://doi.org/10.1117/12.975252
Event: OFS2012 22nd International Conference on Optical Fiber Sensor, 2012, Beijing, China

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.

Citation Download Citation

Fei Peng, Zengling Ran, Yunjiang Rao, and Yongli Liu "A hybrid Raman/FBG sensing system for simultaneous measurement of temperature and strain", Proc. SPIE 8421, OFS2012 22nd International Conference on Optical Fiber Sensors, 8421A6 (7 November 2012); https://doi.org/10.1117/12.975252

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