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Proceedings Paper

High sensitivity optical time-domain reflectometry based on Brillouin dynamic grating in polarization maintaining fiber
Author(s): Kwang Yong Song; Hyuk Jin Yoon
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Paper Abstract

We newly propose and experimentally demonstrate high-sensitivity optical time-domain reflectometry based on Brillouin dynamic grating in polarization maintaining fiber. Distributed measurements with strain sensitivity as high as ~ 1 MHz/με is demonstrated in a 110 m fiber under test with 0.8 m spatial resolution. The operation principle with the condition for proper measurement of the grating spectrum and the advantageous features such as low operating power, high signal to noise ratio, and simple data-acquisition process are explained in comparison with ordinary Brillouin optical time-domain reflectometry, which is verified by the experimental results.

Paper Details

Date Published: 17 October 2012
PDF: 4 pages
Proc. SPIE 8421, OFS2012 22nd International Conference on Optical Fiber Sensors, 842126 (17 October 2012); doi: 10.1117/12.975063
Show Author Affiliations
Kwang Yong Song, Chung-Ang Univ. (Korea, Republic of)
Hyuk Jin Yoon, Korea Railway Research Institute (Korea, Republic of)


Published in SPIE Proceedings Vol. 8421:
OFS2012 22nd International Conference on Optical Fiber Sensors
Yanbiao Liao; Wei Jin; David D. Sampson; Ryozo Yamauchi; Youngjoo Chung; Kentaro Nakamura; Yunjiang Rao, Editor(s)

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