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The weighted index method: a new technique for analyzing planar optical waveguides

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5 Author(s)
Robertson, M.J. ; British Telecom Res. Lab., Ipswich, UK ; Kendall, P.C. ; Ritchie, S. ; McIlroy, P.W.A.
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A method of analyzing optical waveguides called the weighted-index technique is presented. It is particularly appropriate for planar geometries with abrupt refractive index profiles, such as semiconductor waveguides. The method is an extension of the simple effective-index and transverse-resonance methods and has a strong physical foundation. The weighted-index method is shown to give more accurate results and be valid for a wider range of structures. Although it is more complicated than the effective-index method, it can be implemented on the smallest of personal computers

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Lightwave Technology, Journal of  (Volume:7 ,  Issue: 12 )