IEICE Electronics Express
Online ISSN : 1349-2543
ISSN-L : 1349-2543
LETTER
Measurement of large-strain dependence of optical propagation loss in perfluorinated polymer fibers for use in seismic diagnosis
Hiroki UjiharaNeisei HayashiMarie TabaruYosuke MizunoKentaro Nakamura
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2014 Volume 11 Issue 17 Pages 20140707

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Abstract

Brillouin scattering in perfluorinated graded-index (PFGI-) polymer optical fibers (POFs) has been extensively studied for structural health monitoring, including seismic diagnosis. Here, we measure the propagation loss of PFGI-POFs at telecom wavelengths as a function of large applied strain (up to 100%) at three optical powers and as a function of strain rate at a constant optical power. The strain dependence of the propagation loss in PFGI-POFs is found to be independent of the incident power (<27 dBm) and the strain rate (<500% s−1), indicating that PFGI-POF-based Brillouin sensors are potentially applicable to actual seismic monitoring.

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© 2014 by The Institute of Electronics, Information and Communication Engineers
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