Title of article
A porous silicon-based Bragg grating waveguide sensor for chemical monitoring
Author/Authors
Rea، نويسنده , , Ilaria and Iodice، نويسنده , , Mario and Coppola، نويسنده , , Giuseppe and Rendina، نويسنده , , Ivo and Marino، نويسنده , , Antigone and De Stefano، نويسنده , , Luca، نويسنده ,
Issue Information
روزنامه با شماره پیاپی سال 2009
Pages
5
From page
39
To page
43
Abstract
We have fabricated, and characterized a Bragg grating, having a pitch of 10 μm, directly etched on a porous silicon-based planar waveguide to be used as an optical sensor for chemical substances. The transmission spectrum of this device shows a well-defined peak in the near infrared wavelength region due to a high order resonance of the Bragg grating. On exposure to different volatile organic compounds the peak undergoes distinct shifts. The phenomenon is fast and completely reversible. Limits of detection of hundred of ppm can be estimated from the experimental data.
Keywords
Porous silicon , Bragg grating waveguide , Optical sensor
Journal title
Sensors and Actuators B: Chemical
Serial Year
2009
Journal title
Sensors and Actuators B: Chemical
Record number
1437407
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