Optical electromagnetic vector-field modeling for the accurate analysis of finite diffractive structures of high complexity

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An electromagnetic vector-field modle for design of optical components based on the finite-difference-time-domain method and radiation integrals in presented. Its ability to predict the optical electromagnetic dynamics in structures with complex material distribution is demonstrated. Theoretical and numerical investigations of finite-length surface-relief structures embedded in polymer dielectric waveguiding materials are presented. The importance of several geometric parameter dependencies is indicated as far-field power distributions are rearranged between diffraction orders. The influences of the variation in grating period, modulation depth, length and profile are investigated.
Original languageEnglish
JournalApplied Optics
Issue number9
Pages (from-to)1668-1676
Publication statusPublished - 1999

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