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Directional couplers made of nonidentical asymmetric slabs. Part I: Synchronous couplers

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1 Author(s)
Marcuse, D. ; AT&T Bell Laboratories, Holmdel, NJ, USA

We discuss TE and TM mode directional couplers made of nonidentical asymmetric slab waveguides. Approximate expressions are provided for the coupling coefficients of synchronous (no grating) couplers and their accuracy is checked by comparison with exact solutions that are based on solving the guided mode problem of the total structure consisting of the two slabs considered to be a single waveguide.

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Lightwave Technology, Journal of  (Volume:5 ,  Issue: 1 )