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Proceedings Paper

Packaging of surface relief fiber Bragg gratings for use as strain sensors at high temperature
Author(s): Richard H. Selfridge; Stephen M. Schultz; Tyson L. Lowder; Vincent P. Wnuk; Alexis Méndez; Steve Ferguson; Tom Graver
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Paper Abstract

In this paper, we report the development of a new bonding agent and method for the surface mounting of optical fiber Bragg grating (FBG) strain and temperature sensors for use in high temperature environments - where there is a presence of water, moisture, dust, susceptibility to corrosion and/or elevated temperatures up to 800°C. To ensure a stable reflectivity response of FBGs and their survival at elevated temperatures, we are using surface relief fiber Bragg gratings (SR-FBG). These gratings, instead of being written in the core of a photosensitive or hydrogen-loaded fiber, are formed by introducing a periodic surface relief - through photolithographic and etching processes - in the cladding above the core. Samples of SR-FBGs were successfully encapsulated and mounted onto metal shims. The packaged sensors displayed a linear response with temperature and a sensitivity factor of 11pm/°C.

Paper Details

Date Published: 30 March 2006
PDF: 7 pages
Proc. SPIE 6167, Smart Structures and Materials 2006: Smart Sensor Monitoring Systems and Applications, 616702 (30 March 2006); doi: 10.1117/12.657661
Show Author Affiliations
Richard H. Selfridge, Brigham Young Univ. (United States)
Stephen M. Schultz, Brigham Young Univ. (United States)
Tyson L. Lowder, Brigham Young Univ. (United States)
Vincent P. Wnuk, Hitec Products Inc. (United States)
Alexis Méndez, MCH Engineering LLC (United States)
Steve Ferguson, Micron Optics, Inc. (United States)
Tom Graver, Micron Optics, Inc. (United States)

Published in SPIE Proceedings Vol. 6167:
Smart Structures and Materials 2006: Smart Sensor Monitoring Systems and Applications
Daniele Inaudi; Wolfgang Ecke; Brian Culshaw; Kara J. Peters; Eric Udd, Editor(s)

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