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Ammonia Optical Sensing by Microring Resonators
Photonics Research Group, Dipartimento di Elettrotecnica ed Elettronica, Politecnico di Bari, via Edoardo Orabona n. 4, 70125 Bari, Italy
Photonics Research Group, Dipartimento di Ingegneria dell’Ambiente e per lo Sviluppo Sostenibile, Politecnico di Bari, viale del Turismo n. 8, 74100 Taranto, Italy
* Author to whom correspondence should be addressed.
Received: 22 October 2007 / Accepted: 14 November 2007 / Published: 15 November 2007
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: Integrated optics; Optical sensor; Ring resonator; Ammonia sensor
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MDPI and ACS Style
Passaro, V.M.N.; Dell’Olio, F.; De Leonardis, F. Ammonia Optical Sensing by Microring Resonators. Sensors 2007, 7, 2741-2749.
Passaro VMN, Dell’Olio F, De Leonardis F. Ammonia Optical Sensing by Microring Resonators. Sensors. 2007; 7(11):2741-2749.
Passaro, Vittorio M.N.; Dell’Olio, Francesco; De Leonardis, Francesco. 2007. "Ammonia Optical Sensing by Microring Resonators." Sensors 7, no. 11: 2741-2749.