Radiation from an annular grating on a planar optical waveguide
- 20 December 1993
- journal article
- Published by AIP Publishing in Applied Physics Letters
- Vol. 63 (25) , 3423-3425
- https://doi.org/10.1063/1.110160
Abstract
This letter discusses the radiation scattering properties of a concentric-circle grating on the surface of an optical waveguide. A boundary perturbation method is used to obtain an analytical expression for the field radiated by a set of concentric rings located at the film–cover interface of the waveguide. The analytical expression for the radiation field consists of a scattering integral which is integrated to predict the field’s intensity at points in the far field.Keywords
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