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Applied Optics

Applied Optics


  • Vol. 37, Iss. 10 — Apr. 1, 1998
  • pp: 1776–1783

Radiation characteristics of waveguide diffractive doublets

Tingdi Liao and Stephen Sheard  »View Author Affiliations

Applied Optics, Vol. 37, Issue 10, pp. 1776-1783 (1998)

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The radiation characteristics of waveguide diffractive doublets consisting of double gratings located on two surfaces of waveguide cladding film are modeled based on a singular perturbation method. We determine the conditions under which the presence of the upper grating does not affect the radiation characteristics of the waveguide diffractive doublet as a whole. This allows independent performance of the upper grating, which may be replaced by a general diffractive optical element, and of the lower grating as a waveguide grating coupler. The results obtained provide an alternative method for determining the thickness of cladding film in the waveguide diffractive doublets for guided-wave manipulation.

© 1998 Optical Society of America

OCIS Codes
(050.1970) Diffraction and gratings : Diffractive optics
(050.2770) Diffraction and gratings : Gratings
(060.1810) Fiber optics and optical communications : Buffers, couplers, routers, switches, and multiplexers
(130.0130) Integrated optics : Integrated optics

Original Manuscript: May 16, 1997
Revised Manuscript: August 8, 1997
Published: April 1, 1998

Tingdi Liao and Stephen Sheard, "Radiation characteristics of waveguide diffractive doublets," Appl. Opt. 37, 1776-1783 (1998)

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