Modal analysis of discontinuities in diffused optical waveguides

Andreas Weisshaar; Vijai K. Tripathi

doi:10.1117/12.636902

16 December 1992 Modal analysis of discontinuities in diffused optical waveguides

Andreas Weisshaar, Vijai K. Tripathi

Proceedings Volume 1622, Emerging Optoelectronic Technologies; (1992) https://doi.org/10.1117/12.636902
Event: Emerging OE Technologies, Bangalore, India, 1991, Bangalore, India

Abstract

The modal solutions of an arbitrary graded-index dielectric slab waveguide have been derived by applying the generalized telegraphist's equations to the equivalent inhomogeneous parallel-plate waveguide model with electric or magnetic walls. These solutions have been employed in a mode-matching procedure to calculate the transmission properties of step discontinuities in diffused optical waveguides having exponential, Gaussian and complementary error-function index profiles. For slab waveguides contaming an abrupt offset, the radiated power is found to increase smoothly with increasing displacement. Power loss calculations for an abrupt change in the diffusion depth show a sharp transition from almost zero loss to nearly total radiation loss in the vicinity of the cutoff wavelength associated with the dominant mode.

Citation Download Citation

Andreas Weisshaar and Vijai K. Tripathi "Modal analysis of discontinuities in diffused optical waveguides", Proc. SPIE 1622, Emerging Optoelectronic Technologies, (16 December 1992); https://doi.org/10.1117/12.636902

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