Split step solution in the iteration of the beam propagation method for analyzing Bragg gratings

    Authors

    H. Shu

    Comments

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    Abbreviated Journal Title

    Appl. Optics

    Keywords

    FINITE BEAMS; THICK GRATINGS; WAVE-GUIDES; LASER-BEAM; DIFFRACTION; REFLECTION; SYSTEMS; FIBERS; Optics

    Abstract

    The split step method is applied to the iteration of the beam propagation method for analyzing the reflection of a laser beam by a volume Bragg grating. The application of the split step method is made possible by a way to properly treat the grating coupling terms in the paraxial wave equations. This method is demonstrated to be accurate in addition to efficient and robust. After this modification, the iteration of the beam propagation method is suitable for analyzing finite beams in volume Bragg gratings, for which the grating strength might be large. It is also suitable for analyzing Bragg gratings with nonuniform grating structures. (C) 2009 Optical Society of America

    Journal Title

    Applied Optics

    Volume

    48

    Issue/Number

    24

    Publication Date

    1-1-2009

    Document Type

    Article

    Language

    English

    First Page

    4794

    Last Page

    4800

    WOS Identifier

    WOS:000270116600019

    ISSN

    1559-128X

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