Ammonia Optical Sensing by Microring Resonators

doi:10.3390/s7112741

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Sensors 2007, 7(11), 2741-2749; doi:10.3390/s7112741

Article

Ammonia Optical Sensing by Microring Resonators

Vittorio M.N. Passaro ¹^,* , Francesco Dell’Olio ¹ and Francesco De Leonardis ²

¹ Photonics Research Group, Dipartimento di Elettrotecnica ed Elettronica, Politecnico di Bari, via Edoardo Orabona n. 4, 70125 Bari, Italy
² 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

(This article belongs to the Special Issue Photonic Sensors for Chemical, Biological, and Nuclear Agent Detection)

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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.

AMA Style

Passaro V.M.N., Dell’Olio F., De Leonardis F. Ammonia Optical Sensing by Microring Resonators. Sensors. 2007; 7(11):2741-2749.

Chicago/Turabian Style

Passaro, Vittorio M.N.; Dell’Olio, Francesco; De Leonardis, Francesco. 2007. "Ammonia Optical Sensing by Microring Resonators." Sensors 7, no. 11: 2741-2749.

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