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Optics Letters

Optics Letters


  • Vol. 23, Iss. 19 — Oct. 1, 1998
  • pp: 1529–1531

Simple approach to coupling in textured planar waveguides

P. Paddon and Jeff F. Young  »View Author Affiliations

Optics Letters, Vol. 23, Issue 19, pp. 1529-1531 (1998)

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We develop a self-consistent Green’s function technique to calculate the full photonic band structure for guided modes in slab waveguides that have been textured in one dimension with a thin surface grating. The technique is conceptually simple and can easily be reduced to an eigenvalue problem by use of approximations similar to those used in conventional coupled-mode theories. We show that this approach yields the correct TMTM coupling coefficient at oblique incidence and provides a transparent interpretation for its vanishing at a critical angle.

© 1998 Optical Society of America

OCIS Codes
(140.3490) Lasers and laser optics : Lasers, distributed-feedback
(230.7390) Optical devices : Waveguides, planar
(310.2790) Thin films : Guided waves
(350.2770) Other areas of optics : Gratings

P. Paddon and Jeff F. Young, "Simple approach to coupling in textured planar waveguides," Opt. Lett. 23, 1529-1531 (1998)

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