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Bragg gratings in imprinted Ormocer waveguides

 
: Girschikofsky, M.; Förthner, M.; Rommel, M.; Frey, L.; Hellmann, R.

POF 2015, the 24rd International Conference on Plastic Optical Fibers : Nürnberg, Germany, September 22 - 24, 2015
Nürnberg: Technische Hochschule Nürnberg Georg Simon Ohm, 2015
S.177-180
International Conference on Plastic Optical Fibers (POF) <24, 2015, Nürnberg>
Englisch
Konferenzbeitrag
Fraunhofer IISB ()

Abstract
Volume-type Bragg gratings have been fabricated within planar rib-type waveguides based on the inorganic- organic hybrid polymer OrmoComp®. The waveguides have been achieved using the innovative UV enhanced substrate conformal imprint lithography, which allows for a large area patterning at high throughput. For the inscription of volume-type Bragg gratings, the static phase-mask technique was applied with a KrF excimer laser as light source. By applying this technique, well defined Bragg gratings have been achieved within pre-cured OrmoComp® featuring a high reflectivity of up to 80 % and a small full width at half maximum of down to 130 pm. The fabricated volume-type Bragg grating was furthermore applied in the field of temperature sensing, where a high sensitivity of -130 pm/°C was found, which corresponds to a limit of detection of only 4.6 10-2 °C.

: http://publica.fraunhofer.de/dokumente/N-578511.html