Ammonia Optical Sensing by Microring Resonators
Open Access
- 14 November 2007
- Vol. 7 (11) , 2741-2749
- https://doi.org/10.3390/s7112741
Abstract
A very compact (device area around 40 μm2) optical ammonia sensor based on amicroring resonator is presented in this work. Silicon-on-insulator technology is used insensor design and a dye doped polymer is adopted as sensing material. The sensor exhibitsa very good linearity and a minimum detectable refractive index shift of sensing materialas low as 8x10-5, with a detection limit around 4 ‰.Keywords
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