COUPLING BETWEEN DISSIMILAR CIRCULAR DIELECTRIC WAVE-GUIDES

In this paper, the coupling between circular parallel dielectric waveg uides of unequal radii and of different permittivities is analyzed wit h various coupling criteria such as the coupling coefficient, the tran smitted power and the supermodes propagation coefficients. A method du e to Arnaud is used to evaluate the coupling coefficient because it is simple and tractable. The results we have obtained have been found to be in good agreement with those obtained by other authors. Graphs of the coupling have been given as a function of the normalized frequency and as a function of the permittivity for equal and for unequal radii . Physical interpretations have been proposed for same results.