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Radiation from an annular grating on a planar optical waveguide

1993; American Institute of Physics; Volume: 63; Issue: 25 Linguagem: Inglês

10.1063/1.110160

1520-8842

Rebecca H. Jordan, Dennis G. Hall,

Advanced Measurement and Metrology Techniques

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.