Title

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

Authors

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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