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Sensors 2007
Ammonia Optical Sensing by Microring ResonatorsDOI: 10.3390/s7112741 Keywords: Integrated optics, Optical sensor, Ring resonator, Ammonia sensor 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 ‰.
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