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Proceedings Paper

Enhanced resolution folded architecture spectral detector for fiber optic sensors
Author(s): Kenith E. Meissner; Thomas H. Swanson; William B. Spillman; Richard O. Claus
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Paper Abstract

There are numerous types of fiber optic sensors and sensor systems that rely on the use of detector arrays to determine sensor output from returned optical signals. Spectrally modulating sensors such as those based on Bragg gratings and Fabry-Perot sensors based on white light interferometry are but two examples. One problem with such systems is often the resolution of the detector array. In this paper, experimental confirmation of a new technique is presented in which the signal from one or more sensors can be demodulated with high resolution. In the technique, the conventional detection system utilizing a linear detector array is replaced by a rotated 2-D digital camera. This results in a much higher sampling resolution than is obtained via linear sampling due to the "folding" of the detector array elements relative to the linearly varying parameter filter directly in front of the array. A theoretical description of the technique is given and its experimental validation is presented.

Paper Details

Date Published: 9 June 2004
PDF: 5 pages
Proc. SPIE 5502, Second European Workshop on Optical Fibre Sensors, (9 June 2004); doi: 10.1117/12.566795
Show Author Affiliations
Kenith E. Meissner, Virginia Polytechnic Institute and State Univ. (United States)
Thomas H. Swanson, Virginia Polytechnic Institute and State Univ. (United States)
William B. Spillman, Virginia Polytechnic Institute and State Univ. (United States)
Richard O. Claus, Virginia Polytechnic Institute and State Univ. (United States)


Published in SPIE Proceedings Vol. 5502:
Second European Workshop on Optical Fibre Sensors
Jose Miguel Lopez-Higuera; Brian Culshaw, Editor(s)

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