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Proceedings Paper

Sensor applications of photosensitive capillary waveguides
Author(s): Douglas J. Markos; Kevin H. Smith; Timothy E. Dimmick; Lee Dickens; John P. Barber; William E. Edwards
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Paper Abstract

We describe a photosensitive capillary waveguide sensor, composed of a capillary structure with a photosensitive cladding ring surrounding the bore. The bore is filled with a fluid having an index of refraction that is sensitive to a measurand of interest, and a grating is inscribed in the cladding ring. We measure the optical interaction between light propagating in the filled capillary waveguide and the grating to determine the parameter of interest. Methods for forming connections between the capillary and single mode optical fiber are also described. We demonstrate the performance of the capillary waveguide as a temperature sensor in which the sensitivity of the Bragg wavelength to temperature is -150 pm/°C. We also describe how to use the capillary waveguide sensor to discriminate between different measurands.

Paper Details

Date Published: 12 October 2007
PDF: 10 pages
Proc. SPIE 6770, Fiber Optic Sensors and Applications V, 67700T (12 October 2007); doi: 10.1117/12.734758
Show Author Affiliations
Douglas J. Markos, Harris Corp. (United States)
Kevin H. Smith, Harris Corp. (United States)
Timothy E. Dimmick, Harris Corp. (United States)
Lee Dickens, Harris Corp. (United States)
John P. Barber, Harris Corp. (United States)
William E. Edwards, Harris Corp. (United States)

Published in SPIE Proceedings Vol. 6770:
Fiber Optic Sensors and Applications V
Eric Udd, Editor(s)

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