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Proceedings Paper

Model-based compressed sensing of fiber Bragg grating arrays in the frequency domain
Author(s): Stefan Werzinger; Michael Gottinger; Sandra Gussner; Sven Bergdolt; Rainer Engelbrecht; Bernhard Schmauss
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Paper Abstract

We propose a model-based compressed sensing (MBCS) of FBG arrays (FBGA), interrogated with wavelength scanning incoherent optical frequency domain reflectometry. This method measures the frequency response of a FBGA with an electrical vector network analyzer combined with a tunable laser. Instead of the usual inverse discrete Fourier transform (IDFT), we apply a direct estimation of the grating reflectivities with a simple frequency domain model. A reconstruction of 10 gratings spaced by 20 cm is demonstrated. MBCS allows to reduce the number of measurement frequencies from 120 to 8, compared to an IDFT, while using a bandwidth of just 500 MHz.

Paper Details

Date Published: 23 April 2017
PDF: 4 pages
Proc. SPIE 10323, 25th International Conference on Optical Fiber Sensors, 103236H (23 April 2017); doi: 10.1117/12.2263462
Show Author Affiliations
Stefan Werzinger, Friedrich-Alexander-Univ. Erlangen-Nürnberg (Germany)
Michael Gottinger, Friedrich-Alexander-Univ. Erlangen-Nürnberg (Germany)
Sandra Gussner, Friedrich-Alexander-Univ. Erlangen-Nürnberg (Germany)
Sven Bergdolt, Friedrich-Alexander-Univ. Erlangen-Nürnberg (Germany)
Rainer Engelbrecht, Friedrich-Alexander-Univ. Erlangen-Nürnberg (Germany)
Bernhard Schmauss, Friedrich-Alexander-Univ. Erlangen-Nürnberg (Germany)

Published in SPIE Proceedings Vol. 10323:
25th International Conference on Optical Fiber Sensors
Youngjoo Chung; Wei Jin; Byoungho Lee; John Canning; Kentaro Nakamura; Libo Yuan, Editor(s)

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