Diffused waveguides: mode perturbation by thin-film cladding |
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| Authors: | Johnson M |
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| Affiliation: | University College London, Department of Electronic & Electrical Engineering, London, UK; |
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| Abstract: | Normalised parameter plots are given enabling prediction of propagation-constant perturbation in diffused optical waveguides due to a thick dielectric cladding. Refractive-index profiles of Gaussian and complementary-error-function form are treated. The variation of the number of propagating modes with time of diffusion is derived. |
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