Corrugated waveguides as resonance optical filters--advantages and limitations.
The role of the excitation of guided waves propagating in a corrugated dielectric waveguide is discussed in view of the resonance anomalies in reflectivity. Narrow-wavelength filtering properties that are due to these sharp anomalies have been a topic of interest for some time, but a proper understanding of device performances requires an analysis of tolerances with respect to the incident-beam collimation and to waveguide losses. Such an analysis is proposed in this paper, and the conclusion is that the incident-beam divergence plays a critical role in reducing the maximum reflectivity for narrow-band filters.
Popov
E
E
Institut Fresnel, Centre National de la Recherche Scientifique 6133, Faculté des Sciences de St. Jerĵme, Marseille, France. popov@loe.u-3mrs.fr
Bozhkov
B
B