Next Article in Journal
Metalloporphyrin - based Electronic Tongue: an Application for the Analysis of Italian White wines
Next Article in Special Issue
Antimicrobial Peptides: New Recognition Molecules for Detecting Botulinum Toxins
Previous Article in Journal
Modelling a Peroxidase-based Optical Biosensor
Previous Article in Special Issue
Refractive Index Measurement within a Photonic Crystal Fibre Based on Short Wavelength Diffraction
Article Menu

Export Article

Open AccessArticle
Sensors 2007, 7(11), 2741-2749;

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
Full-Text   |   PDF [529 KB, uploaded 21 June 2014]


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 ‰. View Full-Text
Keywords: Integrated optics; Optical sensor; Ring resonator; Ammonia sensor Integrated optics; Optical sensor; Ring resonator; Ammonia sensor
This is an open access article distributed under the Creative Commons Attribution License (CC BY 3.0).

Share & Cite This Article

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.

Show more citation formats Show less citations formats

Related Articles

Article Metrics

Article Access Statistics



[Return to top]
Sensors EISSN 1424-8220 Published by MDPI AG, Basel, Switzerland RSS E-Mail Table of Contents Alert
Back to Top