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Proceedings Paper

The distributed Brillouin sensor system based on offset locking two DFB lasers
Author(s): Yun Li; Xiaoyi Bao; Lufan Zou; Fabien Ravet
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Paper Abstract

In this paper, we demonstrated a distributed Brillouin sensor based on the offset locking of two 1550nm DFB lasers. We use PID controller and optical delay line to lock and tune the frequency difference between two DFB lasers and we also use lock in amplifier to stabilize the DC level of the EOM. The power depletion in the Brillouin scattering has been studied to show optimized strain and temperature accuracy. With this sensor system, we can get the spatial resolution which is 1m with temperature resolution of < 1°C.

Paper Details

Date Published: 5 March 2007
PDF: 8 pages
Proc. SPIE 6595, Fundamental Problems of Optoelectronics and Microelectronics III, 65952T (5 March 2007); doi: 10.1117/12.725907
Show Author Affiliations
Yun Li, Univ. of Ottawa (Canada)
Xiaoyi Bao, Univ. of Ottawa (Canada)
Lufan Zou, Univ. of Ottawa (Canada)
Fabien Ravet, Univ. of Ottawa (Canada)

Published in SPIE Proceedings Vol. 6595:
Fundamental Problems of Optoelectronics and Microelectronics III
Yuri N. Kulchin; Jinping Ou; Oleg B. Vitrik; Zhi Zhou, Editor(s)

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