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Journal of Nanophotonics • new

Metal-less silicon plasmonic mid-infrared gas sensor
Author(s): Sherif M. Sherif; Mohamed A. Swillam
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Paper Abstract

We demonstrate an ultracompact integrated silicon-based plasmonic sensor for lab-on-chip applications in the mid-infrared (MIR) spectral range. Our sensor possesses desirable features such as design simplicity and very high sensitivity. The sensor is designed using a platform for plasmonic effects in the MIR using highly doped silicon. This platform is exploited to create a metal-less plasmonic slot waveguide in the MIR range. This plasmonic waveguide is highly sensitive to any environmental change. Full wave electromagnetic simulations were carried out to design and optimize the structure. The proposed sensor covers a large wavelength span in the MIR range. High spectral sensitivity of 5000  nm/RIU was achieved for our sensor device. Further development of the structure was conducted to extend the sensor operation to multigas sensing.

Paper Details

Date Published: 15 June 2016
PDF: 10 pages
J. Nanophoton. 10(2) 026025 doi: 10.1117/1.JNP.10.026025
Published in: Journal of Nanophotonics Volume 10, Issue 2
Show Author Affiliations
Sherif M. Sherif, The American Univ. in Cairo (Egypt)
Mohamed A. Swillam, The American Univ. in Cairo (Egypt)

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