Mode-dependent radiation loss in y-junctions and directional couplers

Z. Weissman, A. Hardy, E. Marom

Research output: Contribution to conferencePaperpeer-review

1 Scopus citations

Abstract

Calculation of radiation-loss in symmetric dielectric optical waveguide Y-junction power dividers and evanescent-field directional couplers is presented. The loss is calculated as a function of the separating angle for the odd and even exciting normal modes, in Several test structures. It is shown that for most practical cases, the even normal mode is more lossy than the odd normal mode. The difference increases with the separating angle and with the guidance-strength. This radiation-loss difference is, in general, smaller for directional couplers than for Y-junction power dividers. Introducing a proper curvature to the output waveguides of a struc- - ture can serve to minimize this difference.

Original languageEnglish
DOIs
StatePublished - 1989
Event16th Conference of Electrical and Electronics Engineers in Israel, EEIS 1989 - Tel-Aviv, Israel
Duration: 7 Mar 19899 Mar 1989

Conference

Conference16th Conference of Electrical and Electronics Engineers in Israel, EEIS 1989
Country/TerritoryIsrael
CityTel-Aviv
Period7/03/899/03/89

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