A multiple scattering interaction analysis of intersecting waveguides

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Abstract
A multiple scattering technique is developed for describing the physics of intersecting waveguides. In this picture the two waveguides interact by scattering the fields of each other in a self-consistent manner. The development of such an analysis is motivated by the fact that the previous theory, which is based on the idea of symmetric and antisymmetric modes of the composite waveguide structure, has a limited validity. The analysis reveals new features of this geometry with important device applications in integrated optics.