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Proceedings Paper

High-repetition-rate distributed Brillouin sensor by correlation domain analysis with differential frequency modulation
Author(s): Kwang Yong Song; Masato Kishi; Zuyuan He; Kazuo Hotate
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Paper Abstract

A novel kind of high repetition-rate distributed Brillouin sensor is proposed and experimentally demonstrated based on optical correlation-domain analysis with differential frequency modulation, where the optical frequencies of the pump and the probe waves are modulated at slightly different RF frequencies so that the temporal position of the measurement is continuously and repeatedly swept along a fiber under test. A distribution map of Brillouin frequency variation along a 100 m optical fiber is acquired at a repetition rate of 20 Hz with an accuracy of ± 2.5 MHz and a spatial resolution of about 80 cm.

Paper Details

Date Published: 19 May 2011
PDF: 4 pages
Proc. SPIE 7753, 21st International Conference on Optical Fiber Sensors, 7753A2 (19 May 2011); doi: 10.1117/12.899284
Show Author Affiliations
Kwang Yong Song, Chung-Ang Univ. (Korea, Republic of)
Masato Kishi, The Univ. of Tokyo (Japan)
Zuyuan He, The Univ. of Tokyo (Japan)
Kazuo Hotate, The Univ. of Tokyo (Japan)

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

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