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Proceedings Paper

Optical and mechanical characterization of microfabricated optical bend loss sensor for distributive pressure measurement
Author(s): Wei-Chih Wang; Chu-Yu Huang; Te-Kuang Chiang; Per G. Reinhall
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Paper Abstract

The paper describes the development of a mesh waveguide sensor capable of measuring pressure force at the plantar interface. The uniqueness of the system is in its batch fabrication process, which involves a microfabrication molding technique with poly(dimethylsiloxane)(PDMS) as the optical medium. The pressure sensor consists of an array of optical waveguides lying in perpendicular rows and columns separated by elastomeric pads. A map of normal stress was constructed based on observed macro bending which causes intensity attenuation from the physical deformation of two adjacent perpendicular waveguides. In this paper, optical and mechanical analysis of the bend loss will be presented. We will also present the results using a two-layer neural network system for force and image construction of fourteen different shape patterns and its corresponding four different applied forces.

Paper Details

Date Published: 11 April 2007
PDF: 10 pages
Proc. SPIE 6532, Health Monitoring of Structural and Biological Systems 2007, 65321K (11 April 2007); doi: 10.1117/12.715925
Show Author Affiliations
Wei-Chih Wang, Univ. of Washington (United States)
Southern Taiwan Univ. of Technology (Taiwan)
Chu-Yu Huang, Univ. of Washington (United States)
Te-Kuang Chiang, Southern Taiwan Univ. of Technology (Taiwan)
Per G. Reinhall, Univ. of Washington (United States)

Published in SPIE Proceedings Vol. 6532:
Health Monitoring of Structural and Biological Systems 2007
Tribikram Kundu, Editor(s)

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