Periodic Coupling In Semiconductor-Clad Optical Waveguide Devices

Richard F. Carson; Ted E. Batchman; Marta L. McWright

doi:10.1117/12.976146

20 November 1985 Periodic Coupling In Semiconductor-Clad Optical Waveguide Devices

Richard F. Carson, Ted E. Batchman, Marta L. McWright

Proceedings Volume 0540, Southwest Conf on Optics '85; (1985) https://doi.org/10.1117/12.976146
Event: 1985 Albuquerque Conferences on Optics, 1985, Albuquerque, United States

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.

Citation Download Citation

Richard F. Carson, Ted E. Batchman, and Marta L. McWright "Periodic Coupling In Semiconductor-Clad Optical Waveguide Devices", Proc. SPIE 0540, Southwest Conf on Optics '85, (20 November 1985); https://doi.org/10.1117/12.976146

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