P5.5 - Optical Bragg Gratings in Inorganic-Organic Hybrid Polymers for Highly Sensitive Temperature Measurements
- AMA Conferences 2015
2015-05-19 - 2015-05-21
- Proceedings SENSOR 2015
- P5 - Optical Sensors
- M. Girschikofsky, S. Belle, R. Hellmann - University of Applied Sciences Aschaffenburg, Aschaffenburg (Germany), M. Förthner, L. Frey - Friedrich Alexander University Erlangen-Nuremberg, Erlangen (Germany), M. Rommel, R. Fader - Fraunhofer Institute for Integrated Systems and Device Technology (IISB), Erlangen (Germany)
- 812 - 814
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.