Low loss optical waveguide crossing based on octagonal resonant cavity coupling

Abstract

A waveguide crossing utilizing a high index contrast material system is presented. The structure is based on coupling with an octagonal resonant cavity inserted at the waveguide junction. It also employs four identical square metal strips placed at the four corners of the waveguide crossing. The spectral response of the structure calculated using the method of line numerical technique, in general, shows a high power transmission in the forward arm with sufficiently low crosstalk and fraction of radiated power.

Keywords

Spectral Width / Spectral Response / Resonant Cavity / High Power Transmission / Metallic Strip

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