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Proceedings Paper

Enlargement of measurement function in Brillouin optical correlation domain reflectometry with combining four performance improvement schemes
Author(s): Ryu Shimizu; Masato Kishi; Kazuo Hotate
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Paper Abstract

We have demonstrated enhancement of measurement function in Brillouin Optical Correlation Domain Reflectometry (BOCDR) by totally combining, for the first time, four performance improvement schemes, which are double modulation scheme, temporal gating scheme, intensity modulation scheme, and phase modulation scheme. We have achieved distributed strain measurement with 10.1cm spatial resolution, over 5,280m measurement range, and 7,000μƐ strain dynamic range. The number of effective sensing points is over 52,200, which is the best result in BOCDR with wide strain dynamic range. We have also demonstrated the measurement with 3.94cm resolution over 5,280m range. The number of effective sensing points is over 134,000, which is the best result in all the BOCDR experiments reported so far.

Paper Details

Date Published: 8 June 2017
PDF: 4 pages
Proc. SPIE 10323, 25th International Conference on Optical Fiber Sensors, 103239O (8 June 2017); doi: 10.1117/12.2276234
Show Author Affiliations
Ryu Shimizu, The Univ. of Tokyo (Japan)
Masato Kishi, The Univ. of Tokyo (Japan)
Kazuo Hotate, The Univ. of Tokyo (Japan)


Published in SPIE Proceedings Vol. 10323:
25th International Conference on Optical Fiber Sensors
Youngjoo Chung; Wei Jin; Byoungho Lee; John Canning; Kentaro Nakamura; Libo Yuan, Editor(s)

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