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Proceedings Paper

Coherent optical frequency domain reflectometry for interrogation of microbend- and macrobend- based fiber optic hydrocarbon sensors
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Paper Abstract

The paper presents distributed fiber optic bending sensor for petroleum hydrocarbon detection based on COFDR technique. Sensitive polymer, which effectively swells under hydrocarbon influence, was employed in order to introduce bending losses in hydrocarbon presence. In this work we used lumped reflectors, namely fiber Bragg gratings, placed between distributed sensitive elements. Proposed design of the sensor utilises the principle of truly distributed detection with discrete localisation of perturbation. We have demonstrated that the COFDR technique with bending based chemical sensor is capable to detect hydrocarbon presence within a few minutes for 20-cm perturbation-length with spatial resolution up to 0.5 meters.

Paper Details

Date Published: 6 August 2001
PDF: 8 pages
Proc. SPIE 4328, Smart Structures and Materials 2001: Sensory Phenomena and Measurement Instrumentation for Smart Structures and Materials, (6 August 2001); doi: 10.1117/12.435547
Show Author Affiliations
Rosa Martha Lopez-Gutierrez, CICESE (United States)
Vasilii V. Spirin, CICESE (United States)
Mikhail G. Shlyagin, CICESE (United States)
Serguei V. Miridonov, CICESE (Mexico)
Ileana Marquez Borbon, CICESE (United States)
Alfredo Marquez-Lucero, CIMAV (Mexico)


Published in SPIE Proceedings Vol. 4328:
Smart Structures and Materials 2001: Sensory Phenomena and Measurement Instrumentation for Smart Structures and Materials
Eric Udd; Daniele Inaudi, Editor(s)

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