Optical and mechanical characterization of microfabricated optical bend loss sensor for distributive pressure measurement

Wei-Chih Wang; Chu-Yu Huang; Te-Kuang Chiang; Per G. Reinhall

doi:10.1117/12.715925

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11 April 2007 Optical and mechanical characterization of microfabricated optical bend loss sensor for distributive pressure measurement

Wei-Chih Wang, Chu-Yu Huang, Te-Kuang Chiang, Per G. Reinhall

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Proceedings Volume 6532, Health Monitoring of Structural and Biological Systems 2007; 65321K (2007) https://doi.org/10.1117/12.715925
Event: SPIE Smart Structures and Materials + Nondestructive Evaluation and Health Monitoring, 2007, San Diego, California, United States

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.

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Wei-Chih Wang, Chu-Yu Huang, Te-Kuang Chiang, and Per G. Reinhall "Optical and mechanical characterization of microfabricated optical bend loss sensor for distributive pressure measurement", Proc. SPIE 6532, Health Monitoring of Structural and Biological Systems 2007, 65321K (11 April 2007); https://doi.org/10.1117/12.715925

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