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Proceedings Paper

Nonsymmetric AlGaN directional coupler switch analysis
Author(s): Antonio Crespo; Mohammad A. Karim
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Paper Abstract

AlGaN has been in the spotlight lately for its use in blue to UV lasers and LEDs, tolerances to high temperature/harsh environment, high power applications, etc. Little has been examined in the area of electro-optic (EO) modulation and waveguiding. This paper compiles the optical and EO properties of AlGaN. It also models the behavior of AlGaN integrated optic waveguides and switches based on the zero- gap EO directional coupler. Among the advantages of AlGaN integrated optic waveguides and switches is the potential to work at wavelengths for IR to the blue region. Additionally, GaN has a close refractive index match, to glass and polymer optical fibers and waveguides. Preliminary findings suggest that the size of AlGaN EO directional couplers, based on measured nonlinear properties of the material and, assuming a viable PIN structure, could be in the range of approximately 7000 micrometers , operating at TTL voltages, with potentially high modulation switching speeds.

Paper Details

Date Published: 3 November 1998
PDF: 6 pages
Proc. SPIE 3463, Photonics and Radio Frequency II, (3 November 1998); doi: 10.1117/12.330397
Show Author Affiliations
Antonio Crespo, Air Force Research Lab. (United States)
Mohammad A. Karim, Univ. of Dayton (United States)

Published in SPIE Proceedings Vol. 3463:
Photonics and Radio Frequency II
Gregory J. Zagar; Anastasios P. Goutzoulis; Andrew R. Pirich, Editor(s)

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