17 October 2012 Intensity-independent fiber coupled interrogation technique for fiber Bragg gratings by fiber Bragg gratings
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Proceedings Volume 8421, OFS2012 22nd International Conference on Optical Fiber Sensors; 84215G (2012) https://doi.org/10.1117/12.975306
Event: OFS2012 22nd International Conference on Optical Fiber Sensor, 2012, Beijing, China
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.
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Jörg Burgmeier, Jörg Burgmeier, Jan Koch, Jan Koch, Wolfgang Schade, Wolfgang Schade, } "Intensity-independent fiber coupled interrogation technique for fiber Bragg gratings by fiber Bragg gratings", Proc. SPIE 8421, OFS2012 22nd International Conference on Optical Fiber Sensors, 84215G (17 October 2012); doi: 10.1117/12.975306; https://doi.org/10.1117/12.975306
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