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Proceedings Paper

Buried fiber intrusion detection sensor with minimal false alarm rates
Author(s): Jeff Bush; Carol A. Davis; Pepe G. Davis; Allen Cekorich; Fred P. McNair
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Paper Abstract

A novel design approach for a highly reliable buried intrusion detection sensor is described. The design involves the use of a low cost depolarized Sagnac fiber interferometer with a 'sensing loop' consisting of a delay line and buried fiber segment. The intrusion sensor is configured for an 'all fiber' remote deployment where active components (source, receiver, demodulator) are located separately and connected to the sensor through an insensitive fiber tether. A robust and cost effective buried sensor 'mat' design was developed. This design enabled high sensitivity as well as ease of deployment. Sensors were built and evaluated. Test results indicate an effective design.

Paper Details

Date Published: 23 September 1998
PDF: 11 pages
Proc. SPIE 3489, Fourth Pacific Northwest Fiber Optic Sensor Workshop, (23 September 1998); doi: 10.1117/12.323429
Show Author Affiliations
Jeff Bush, Optiphase, Inc. (United States)
Carol A. Davis, Optiphase, Inc. (United States)
Pepe G. Davis, Optiphase, Inc. (United States)
Allen Cekorich, Optiphase, Inc. (United States)
Fred P. McNair, Optiphase, Inc. (United States)


Published in SPIE Proceedings Vol. 3489:
Fourth Pacific Northwest Fiber Optic Sensor Workshop
Chuck C. Jung; Eric Udd, Editor(s)

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