Diffraction gratings 256 INDEX

The effective refractive index, Ag, of a diffraction grating coupler, as illustrated in Fig. 8, is described by [20-22] ... 

Another approach to optical excitation of surface plasmons is based on the diffraction of light on a diffraction grating. In this method, a light wave is incident from a dielectric medium with the refractive index on a metal grating with the dielectric constant e, the grating period A and the grating depth q. Fig. 30. 

Fig. 31 Spectral dependence of the effective index of a surface plasmon on gold-water interface and the effective index of the light wave produced by a diffraction of light on a diffraction grating calculated for two different grating periods and three different angles of incidence...

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