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Proceedings Paper

Resolution limits and efficient signal processing for fiber optic Bragg grating sensors with direct spectroscopic detection
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Paper Abstract

Theoretical resolution limits of evaluation of centroid shift in fiber optic Bragg grating sensors are analyzed. In the theoretical model, it is assumed that random additive Gaussian noise in a sensor signal acquisition equipment is the main origin of the system error. To provide noise resistant demodulation, a new optimal signal processing algorithm is suggested. It allows accurate detection of the Bragg wavelength shifts within large range and keeps resolution very close to theoretical limit imposed by a random noise. The new demodulation technique is also compared with well known centroid detection algorithm.

Paper Details

Date Published: 30 May 2003
PDF: 8 pages
Proc. SPIE 5144, Optical Measurement Systems for Industrial Inspection III, (30 May 2003); doi: 10.1117/12.501160
Show Author Affiliations
Serguei V. Miridonov, Ctr. de Investigacion Cientifica y de Educacion Superior de Ensenada (Mexico)
Mikhail G. Shlyagin, Ctr. de Investigacion Cientifica y de Educacion Superior de Ensenada (Mexico)
Vasilii V. Spirin, Ctr. de Investigacion Cientifica y de Educacion Superior de Ensenada (Mexico)


Published in SPIE Proceedings Vol. 5144:
Optical Measurement Systems for Industrial Inspection III
Wolfgang Osten; Malgorzata Kujawinska; Katherine Creath, Editor(s)

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