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Proceedings Paper

Modeling antimonite-based distributed feedback lasers for carbon-dioxide gas sensing
Author(s): Meng-Mu Shih
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Paper Abstract

This work shows the process of computing coupling coefficients of first-order distributed feedback (DFB) metalsemiconductor quantum-well lasers. For the gas sensing of carbon dioxide (CO2), the antimonite-based (Sb-based) DFB lasers at the wavelength of 2 μm are discussed. The optical waveguide structure, for each laser, has a built-in grating interface between the metal and semiconductor layers. This work considers the interface with sinusoidal corrugation geometry for preliminary modeling and computation. To compute the coupling coefficient of the metal-grating waveguide, a photonic method, Floquet-Bloch method (FB), is used for the waveguide with such a corrugated semiconductor-metal interface. The optical method, the Ray-optics method (RO), is also used for computation. Both the photonic and the optical methods have close results.

Paper Details

Date Published: 11 May 2012
PDF: 6 pages
Proc. SPIE 8371, Sensing Technologies for Global Health, Military Medicine, Disaster Response, and Environmental Monitoring II; and Biometric Technology for Human Identification IX, 83711C (11 May 2012); doi: 10.1117/12.920093
Show Author Affiliations
Meng-Mu Shih, Univ. of Florida (United States)


Published in SPIE Proceedings Vol. 8371:
Sensing Technologies for Global Health, Military Medicine, Disaster Response, and Environmental Monitoring II; and Biometric Technology for Human Identification IX
Sárka O. Southern; B. V. K. Vijaya Kumar; Salil Prabhakar; Arend H. J. Kolk; Kevin N. Montgomery; Arun A. Ross; Carl W. Taylor, Editor(s)

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