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Proceedings Paper

FBG laser sensing with polarization scrambling
Author(s): Hyunjin Kim; Daegil Kim; Minho Song
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Paper Abstract

We propose a laser sensor system which uses fiber Bragg gratings as laser cavity mirrors as well as sensors. With a spectrometer demodulation, a low-cost, more robust, and faster sensor functions have been demonstrated compared with the conventional wavelength-swept laser demodulation. Some of the multiple FBG sensors showed unstable lasing characteristics, leading to missing measurands. Polarization scrambling has been used to alleviate the problem. With fast polarization disturbances in the fiber-optic laser cavity, more FBG sensor outputs could be generated consistently and data acquisition rate has increased more than 5 times.

Paper Details

Date Published: 15 October 2013
PDF: 4 pages
Proc. SPIE 8924, Fourth Asia Pacific Optical Sensors Conference, 892438 (15 October 2013); doi: 10.1117/12.2031488
Show Author Affiliations
Hyunjin Kim, Chonbuk National Univ. (Korea, Republic of)
Daegil Kim, Chonbuk National Univ. (Korea, Republic of)
Minho Song, Chonbuk National Univ. (Korea, Republic of)

Published in SPIE Proceedings Vol. 8924:
Fourth Asia Pacific Optical Sensors Conference
Minghong Yang; Dongning Wang; Yun-Jiang Rao, Editor(s)

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