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Proceedings Paper

Periodic Coupling In Semiconductor-Clad Optical Waveguide Devices
Author(s): Richard F. Carson; Ted E. Batchman; Marta L. McWright
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Paper Abstract

Periodic coupling effects between the lossless modes of a dielectric planar waveguide and the lossy modes of a thin semiconductor cladding can be used to construct integrated optical devices such as polarizers, photodetectors, and modulators or switches. Because successively higher order "submodes" are supported in the semiconductor cladding as its thickness is increased, the coupling results in a damped oscillation of the mode index and attenuation constant. This effect is different for the transverse electric and transverse magnetic polarizations, and is used here to construct a polarizer. A highly efficient photodetector can be designed to exploit the large absorption of light in the semiconductor cladding. The optical properties of the semiconductor cladding can also be changed by carrier injection to produce modulation of the guided lightwave. By making use of sharp changes in the effective refractive index or attenuation characteristics of the clad waveguide, the modulator can also be designed as a switch.

Paper Details

Date Published: 20 November 1985
PDF: 8 pages
Proc. SPIE 0540, Southwest Conf on Optics '85, (20 November 1985); doi: 10.1117/12.976146
Show Author Affiliations
Richard F. Carson, University of Virginia Department of Electrical Engineering (United States)
Ted E. Batchman, University of Virginia Department of Electrical Engineering (United States)
Marta L. McWright, University of Virginia Department of Electrical Engineering (United States)


Published in SPIE Proceedings Vol. 0540:
Southwest Conf on Optics '85
Susanne C. Stotlar, Editor(s)

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