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

Mikhail G. Shlyagin; Serguei V. Miridonov; Diana Tentori

doi:10.1117/12.281246

24 September 1997 Frequency multiplexing of in-fiber Bragg grating sensors using tunable laser

Mikhail G. Shlyagin, Serguei V. Miridonov, Diana Tentori

Proceedings Volume 3099, Micro-optical Technologies for Measurement, Sensors, and Microsystems II and Optical Fiber Sensor Technologies and Applications; (1997) https://doi.org/10.1117/12.281246
Event: Lasers and Optics in Manufacturing III, 1997, Munich, Germany

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.

Citation Download Citation

Mikhail G. Shlyagin, Serguei V. Miridonov, and Diana Tentori "Frequency multiplexing of in-fiber Bragg grating sensors using tunable laser", Proc. SPIE 3099, Micro-optical Technologies for Measurement, Sensors, and Microsystems II and Optical Fiber Sensor Technologies and Applications, (24 September 1997); https://doi.org/10.1117/12.281246

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