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Proceedings Paper

Intensity-independent fiber coupled interrogation technique for fiber Bragg gratings by fiber Bragg gratings
Author(s): Jörg Burgmeier; Jan Koch; Wolfgang Schade
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Paper Abstract

A low cost, highly accurate and light intensity-independent sensor system for the analysis of fiber Bragg grating signals based on fiber Bragg gratings in the detection unit is presented. The setup is based on two fiber Bragg gratings used in reflection to analyse one sensing fiber Bragg grating. The Bragg gratings were inscribed in coated non-photosensitive standard telecommunication fibers using an infrared femtosecond laser and the point-by-point writing technique. The accuracy of this interrogation concept is presented by means of a temperature measurement with a resolution better than 0.12°C in a linear operation range of 20°C.

Paper Details

Date Published: 17 October 2012
PDF: 4 pages
Proc. SPIE 8421, OFS2012 22nd International Conference on Optical Fiber Sensors, 84215G (17 October 2012); doi: 10.1117/12.975306
Show Author Affiliations
Jörg Burgmeier, Fraunhofer-Institut für Nachrichtentechnik Heinrich-Hertz-Institut (Germany)
Technische Univ. Clausthal (Germany)
Jan Koch, Fraunhofer-Institut für Nachrichtentechnik Heinrich-Hertz-Institut (Germany)
Technische Univ. Clausthal (Germany)
Wolfgang Schade, Fraunhofer-Institut für Nachrichtentechnik Heinrich-Hertz-Institut (Germany)
Technische Univ. Clausthal (Germany)


Published in SPIE Proceedings Vol. 8421:
OFS2012 22nd International Conference on Optical Fiber Sensors
Yanbiao Liao; Wei Jin; David D. Sampson; Ryozo Yamauchi; Youngjoo Chung; Kentaro Nakamura; Yunjiang Rao, Editor(s)

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