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Proceedings Paper

A distributed strain sensor with the memory effect based on the POF OTDR
Author(s): Kentaro Nakamura; Irwan R. Husdi; Sadayuki Ueha
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Paper Abstract

This study presents an investigation on the memory effect of plastic optical fiber (POF) for a strain sensor application using the optical time-domain reflectometry (OTDR). The hysteresis characteristics of the reflection and transmission loss in the OTDR responses are observed for a tensile strain to the POF cable. The OTDR responses remain even after the external force is removed due to the plastic deformation of the POF if the applied strain is enough high. Then, the temporal change of the responses is recorded as a function of the elapsed time, and the life of the memory effect is discussed. A helical configuration for a distributed load sensor with memory effect is proposed and designed. The helical pitch is so determined that no loss will be generated by winding the POF cable around a rubber tube. In this configuration, the memory effect is produced by the visco-elastic property of the tube.

Paper Details

Date Published: 23 May 2005
PDF: 4 pages
Proc. SPIE 5855, 17th International Conference on Optical Fibre Sensors, (23 May 2005); doi: 10.1117/12.624221
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. 5855:
17th International Conference on Optical Fibre Sensors

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