Broadband sharp 90-degree bends and T-splitters in plasmonic coaxial waveguides

Wonseok Shin; Wenshan Cai; Peter B Catrysse; Georgios Veronis; Mark L Brongersma; Shanhui Fan

doi:10.1021/nl402335x

Broadband sharp 90-degree bends and T-splitters in plasmonic coaxial waveguides

Nano Lett. 2013 Oct 9;13(10):4753-8. doi: 10.1021/nl402335x. Epub 2013 Sep 4.

Authors

Wonseok Shin¹, Wenshan Cai, Peter B Catrysse, Georgios Veronis, Mark L Brongersma, Shanhui Fan

Affiliation

¹ E. L. Ginzton Laboratory, Stanford University , Stanford, California 94305, United States.

PMID: 23981038
DOI: 10.1021/nl402335x

Abstract

We demonstrate numerically that sharp 90° bends and T-splitters can be designed in plasmonic coaxial waveguides at deep-subwavelength scale to operate without reflection and radiation over a broad range of wavelengths, including the telecommunication wavelength of 1.55 μm. We explain the principles of the operation using a transmission line model of the waveguide in the quasi-static limit. The compact bends and T-splitters open up a new avenue for the design of densely integrated optical circuits with minimal crosstalk.

Publication types

Research Support, Non-U.S. Gov't
Research Support, U.S. Gov't, Non-P.H.S.

MeSH terms

Computer-Aided Design
Equipment Design
Models, Theoretical
Optical Devices*
Optics and Photonics / methods*
Surface Plasmon Resonance*