Few-mode fiber multi-parameter sensor with distributed temperature and strain discrimination

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We propose a unique few-mode fiber (FMF)-based multi-parameter optical-fiber sensor for distributed measurement of temperature and strain. We launch a pump and a probe signal through specific linearly polarized modes into a FMF, and monitor the Brillouin frequency shift (BFS) in each mode. By analyzing the temperature and strain coefficients of the BFS of the two lowest order (LP01, LP11) modes, discrimination of temperature and strain are successfully demonstrated, with an accuracy of 1.2 degrees C and 21.9 mu epsilon.
Publisher
OPTICAL SOC AMER
Issue Date
2015-04
Language
English
Article Type
Article
Keywords

STIMULATED BRILLOUIN-SCATTERING; 2-MODE FIBER; OPTICAL-FIBER; BIREFRINGENCE; TRANSMISSION

Citation

OPTICS LETTERS, v.40, no.7, pp.1488 - 1491

ISSN
0146-9592
DOI
10.1364/OL.40.001488
URI
http://hdl.handle.net/10203/200766
Appears in Collection
PH-Journal Papers(저널논문)
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