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Proceedings Paper

Faraday rotating Brillouin sensor system
Author(s): Anthony W. Brown; Michael T. V. Wylie; Bruce G. Colpitts
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Paper Abstract

A Faraday Rotating Brillouin Sensor System (FRoBS) is described and experimentally verified to reduce abrubt temperature/strain change distortions of the Brillouin Spectrum.This single-ended Brillouin System is created by modifying a typical Brillouin Optical Time-Domain Analysis system and adding a Faraday Rotating Mirror (FRM) and a Polarization Beam Splitter (PBS).Both lasers are combined with a PBS and are launched into the sensing fibre together.The remote end of the sensing fibre has a FRM attached that enables Brillouin measurement of the outgoing waves as well as the incoming waves, resulting in a mirrored time-domain waveform. Using weighted averages of the mirrored waveform results in a reduction in the aforementioned distortion.

Paper Details

Date Published: 17 May 2011
PDF: 4 pages
Proc. SPIE 7753, 21st International Conference on Optical Fiber Sensors, 77530B (17 May 2011); doi: 10.1117/12.885010
Show Author Affiliations
Anthony W. Brown, Dark-Pulse Technologies Ltd. (Canada)
Michael T. V. Wylie, Univ. of New Brunswick (Canada)
Bruce G. Colpitts, Univ. of New Brunswick (Canada)

Published in SPIE Proceedings Vol. 7753:
21st International Conference on Optical Fiber Sensors
Jacques Albert; Wojtek J. Bock, Editor(s)

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