Abstract
In this article, simultaneous interaction of two side-coupled waveguides is considered with the dressed continuum represented by a linear waveguide array in which two consecutive pairs of waveguides are coupled in phase (positive coupling) and out-of-phase (negative coupling) alternately. It causes cross-coupling between the two evanescent decay-channels and results in the phenomenon of Rabi-like oscillations of the light field in spatial domain during propagation through the side waveguides. The profile of population exchange between the two side waveguides depends on the distinctive parameter conditions. It is interesting to note that, under no circumstances, light energy resides in the continuum.
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