Journal
SENSORS
Volume 7, Issue 11, Pages 2741-2749Publisher
MOLECULAR DIVERSITY PRESERVATION INT
DOI: 10.3390/s7112741
Keywords
integrated optics; optical sensor; ring resonator; ammonia sensor
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A very compact (device area around 40 mu m(2)) optical ammonia sensor based on a microring resonator is presented in this work. Silicon- on- insulator technology is used in sensor design and a dye doped polymer is adopted as sensing material. The sensor exhibits a very good linearity and a minimum detectable refractive index shift of sensing material as low as 8x10(-5), with a detection limit around 4 parts per thousand.
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