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Proceedings Paper

Frequency multiplexing of in-fiber Bragg grating sensors using tunable laser
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Paper Abstract

A method of interrogation of a quasi-distributed sensor in the frequency domain is discussed. The sensor consists of a series of pairs of the identical Bragg gratings imprinted in the fiber core along its length. Each pair of the Bragg gratings performs as a low reflective Fabry-Perot interferometer producing a cosine modulated reflection spectrum within a grating's main lobe. The detector signal represents the superposition of the modulated reflection spectra which can be decomposed using the fast Fourier transform.

Paper Details

Date Published: 24 September 1997
PDF: 6 pages
Proc. SPIE 3099, Micro-optical Technologies for Measurement, Sensors, and Microsystems II and Optical Fiber Sensor Technologies and Applications, (24 September 1997); doi: 10.1117/12.281246
Show Author Affiliations
Mikhail G. Shlyagin, Ctr. de Investigacion Cientifica y de Educacion Superior de Ensenada (Mexico)
Serguei V. Miridonov, Ctr. de Investigacion Cientifica y de Educacion Superior de Ensenada (Mexico)
Diana Tentori, Ctr. de Investigacion Cientifica y de Educacion Superior de Ensenada (Mexico)


Published in SPIE Proceedings Vol. 3099:
Micro-optical Technologies for Measurement, Sensors, and Microsystems II and Optical Fiber Sensor Technologies and Applications
Olivier M. Parriaux; Ernst-Bernhard Kley; Brian Culshaw; Magnus Breidne, Editor(s)

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