Antiresonant decoupling of parallel dielectric waveguides

Carlo Gian Someda

doi:10.1117/12.636886

16 December 1992 Antiresonant decoupling of parallel dielectric waveguides

Carlo Gian Someda

Proceedings Volume 1622, Emerging Optoelectronic Technologies; (1992) https://doi.org/10.1117/12.636886
Event: Emerging OE Technologies, Bangalore, India, 1991, Bangalore, India

Abstract

Two open waveguides separated by a finite spacing can be decoupled if the index between them is a suitable function of the transverse coordinates. The proof of this statement relies on vector properties of e. m. waves. On the contrary decoupling is impossible for scalar waves. Therefore it is incompatible with the weakly-guiding approximation. However numerical results and other ones based on perturbation theory show that it can be ohtamed with index differences which are still small enough to be practical. Decoupling can be interpreted physically as an antiresonance of the region between the guides. Examples are presented and potential practical applications are outlined. I.

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Carlo Gian Someda "Antiresonant decoupling of parallel dielectric waveguides", Proc. SPIE 1622, Emerging Optoelectronic Technologies, (16 December 1992); https://doi.org/10.1117/12.636886

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