Bragg waveguide grating as a 1ID photonic bandgap structure: COST 268 modelling task

J. Ctyroky, S. Helfert, R. Pregla, P. Bienstman, R. Baets, R.M. de Ridder, Remco Stoffer, G. Klaasse, J. Petracek, P. Lalanne, J.P. Hugonin, R.M. De La Rue

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    Modal reflection, transmission and loss of deeply etched Bragg waveguide gratings were modelled by six European laboratories using independently developed two-dimensional (2D) numerical codes based on four different methods, with very good mutual agreement. It was found that (rather weak) material dispersion of the SiO2/Si3N4 system does not significantly affect the results. The existence of lossless Floquet-Bloch modes in deeply etched gratings was confirmed. Based on reliable numerical results, the physical origin of out-of-plane losses of 1D or 2D photonic band gap structures in slab waveguides is briefly discussed.
    Original languageUndefined
    Pages (from-to)455-470
    Number of pages15
    JournalOptical and quantum electronics
    Issue number5
    Publication statusPublished - 2002


    • IR-100098
    • METIS-208145

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