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Proceedings Paper

Simplified correlation-domain Brillouin sensor using plastic optical fiber
Author(s): Neisei Hayashi; Yosuke Mizuno; Kentaro Nakamura
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Paper Abstract

To perform distributed strain and temperature measurement, we have recently developed simplified Brillouin optical correlation-domain reflectometry (S-BOCDR), in which the light Fresnel-reflected at the ends of the fiber under test (FUT) is used as a reference light. Here, we implement S-BOCDR using a plastic optical fiber (POF) as an FUT, which provides the following advantages over S-BOCDR using a standard silica single-mode fiber (SMF): (1) the beat signal of the Stokes light and the Fresnel-reflected light that is obtained at the interface between the POF and the SMF (the pigtail of an optical circulator) can be stabilized, and (2) the effect of the 0th correlation peak can be easily and effectively suppressed by exploiting a so-called Brillouin frequency shift-hopping phenomenon. We then experimentally demonstrate a distributed measurement and detect a 0.46-m-long heated POF section.

Paper Details

Date Published: 1 July 2015
PDF: 4 pages
Proc. SPIE 9655, Fifth Asia-Pacific Optical Sensors Conference, 965529 (1 July 2015); doi: 10.1117/12.2182782
Show Author Affiliations
Neisei Hayashi, Tokyo Institute of Technology (Japan)
Yosuke Mizuno, Tokyo Institute of Technology (Japan)
Kentaro Nakamura, Tokyo Institute of Technology (Japan)

Published in SPIE Proceedings Vol. 9655:
Fifth Asia-Pacific Optical Sensors Conference
Byoungho Lee; Sang-Bae Lee; Yunjiang Rao, Editor(s)

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