A comparison between different propagative schemes for the simulation of tapered step index slab waveguides

Jan Haes, Roel Baets, C.M. Weinert, M. Gravert, H.P. Nolting, M. Adelaide Andrade, A. Leite, Hans K. Bissessur, J.B. Davies, Robert D. Ettinger, Jiri Ctyroky, E. Ducloux, F. Ratovelomanana, N. Vodjdani, Stefan Helfert, F.H.G.M. Wijnands, Reinholt Pregla, Hugo Hoekstra, F.H.G.M. Wijnands, Gijsbertus J.M. Krijnen

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    Abstract

    The performance and accuracy of a number of propagative algorithms are compared for the simulation of tapered high contrast step index slab waveguides. The considered methods include paraxial as well as nonparaxial formulations of optical field propagation. In particular attention is paid to the validity of the paraxial approximation. To test the internal consistency of the various methods the property of reciprocity is verified and it is shown that for the paraxial algorithms the reciprocity can only be fulfilled if the paraxial approximation of the power flux expression using the Poynting vector is considered. Finally, modeling results are compared with measured fiber coupling losses for an experimentally realized taper structure.
    Original languageEnglish
    Pages (from-to)1557-1569
    Number of pages13
    JournalJournal of lightwave technology
    Volume14
    Issue number6
    DOIs
    Publication statusPublished - Jun 1996

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