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Optical bragg gratings in inorganic-organic hybrid polymers for highly sensitive temperature measurements

: Girschikofsky, Maiko; Belle, Stefan; Hellmann, Ralf; Förthner, Michael; Frey, Lothar; Rommel, Mathias; Fader, Robert

Poster urn:nbn:de:0011-n-3525570 (1.5 MByte PDF)
MD5 Fingerprint: a8a903785f208b8fd0ccc01b8d91bf41
Created on: 6.8.2015

Lerch, Reinhard (Vorsitzender) ; AMA Fachverband für Sensorik e.V., Wunstorf:
AMA Conferences 2015. Proceedings : SENSOR 2015 and IRS 2 2015; Nuremberg Exhibition Centre, Germany, 19. - 21.5.2015
Nürnberg: AMA Service, 2015
ISBN: 978-3-9813484-8-4
International Conference on Sensors and Measurement Technology (SENSOR) <17, 2015, Nuremberg>
International Conference on Infrared Sensors & Systems (IRS²) <14, 2015, Nuremberg>
Deutsche Forschungsgemeinschaft DFG
HE 5150/1-1
Deutsche Forschungsgemeinschaft DFG
FR 713/10-1
Bragg-Gitter-Sensoren auf der Basis von Hybridpolymeren, - Grundlegende Untersuchungen und Realisierung
Conference Paper, Electronic Publication
Fraunhofer IISB ()

We report on the fabrication of an optical sensor based on channel waveguide Bragg gratings in precured inorganic-organic ORMOCER® hybrid-polymer substrates. The particular combination of the optical component and chosen substrate lead to a planar structure with ideal characteristics for highly sensitive temperature measurements. The resulting sensor element shows a linear dependence between temperature and sensor signal with a markedly high sensitivity of up to 294 pm K-1, a thirtyfold higher sensitivity as compared to commonly used silica based fiber Bragg gratings. For the applied interrogation system this sensitivity corresponds to a notable resolution of 20 mK for temperature recordings.