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Sensors 2009, 9(10), 7814-7836; doi:10.3390/s91007814
Article

Investigation of SOI Raman Lasers for Mid-Infrared Gas Sensing

1,*  and 2
1 Dipartimento di Elettrotecnica ed Elettronica, Politecnico di Bari, via Edoardo Orabona n. 4, 70125 Bari, Italy 2 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: 30 July 2009 / Revised: 16 September 2009 / Accepted: 25 September 2009 / Published: 30 September 2009
(This article belongs to the Special Issue Gas Sensors 2009)
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Abstract

In this paper, the investigation and detailed modeling of a cascaded Raman laser, operating in the midwave infrared region, is described. The device is based on silicon-on-insulator optical waveguides and a coupled resonant microcavity. Theoretical results are compared with recent experiments, demonstrating a very good agreement. Design criteria are derived for cascaded Raman lasers working as continuous wave light sources to simultaneously sense two types of gases, namely C2H6 and CO2, at a moderate power level of 130 mW.
Keywords: raman lasers; stimulated raman scattering; nonlinear waveguides; optical sensors; integrated optics; silicon-on-insulator raman lasers; stimulated raman scattering; nonlinear waveguides; optical sensors; integrated optics; silicon-on-insulator
This is an open access article distributed under the Creative Commons Attribution License which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.

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MDPI and ACS Style

Passaro, V.M.N.; De Leonardis, F. Investigation of SOI Raman Lasers for Mid-Infrared Gas Sensing. Sensors 2009, 9, 7814-7836.

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