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Proceedings Paper

Memory effect of POF distributed strain sensor
Author(s): Kentaro Nakamura; Irwan R. Husdi; Sadayuki Ueha
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Paper Abstract

Characteristics of plastic optical fiber (POF) as a distributed sensor are under test using a specially designed optical time-domain reflectometry (OTDR). Our system is capable for testing an ordinary POF of 1 mm in diameter up to about 120 m in length with the use of a photon counting detector. The OTDR responses are experimentally investigated for mechanical disturbance at one point along the POF such as small bending, axial strain, side loading and twisting deformation. We found that the POF sensing system can be applied for very large stain and has a memory effect due to the plastic deformation. Even after releasing the strain, we can observe the residual OTDR responses. This nature would serve a unique function as a distributed sensor which we can not achieve using silica-glass fiber system. Temperature effects on the OTDR results for POF are also studied and discussed.

Paper Details

Date Published: 9 June 2004
PDF: 4 pages
Proc. SPIE 5502, Second European Workshop on Optical Fibre Sensors, (9 June 2004); doi: 10.1117/12.566531
Show Author Affiliations
Kentaro Nakamura, Tokyo Institute of Technology (Japan)
Irwan R. Husdi, Tokyo Institute of Technology (Japan)
Sadayuki Ueha, Tokyo Institute of Technology (Japan)

Published in SPIE Proceedings Vol. 5502:
Second European Workshop on Optical Fibre Sensors
Jose Miguel Lopez-Higuera; Brian Culshaw, Editor(s)

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