Low-loss intersection of subwavelength plasmonic slot waveguides

Sanshui Xiao; Niels Asger Mortensen

doi:10.1117/12.803459

18 November 2008 Low-loss intersection of subwavelength plasmonic slot waveguides

Sanshui Xiao, Niels Asger Mortensen

Author Affiliations +

Proceedings Volume 7135, Optoelectronic Materials and Devices III; 71352J (2008) https://doi.org/10.1117/12.803459
Event: Asia-Pacific Optical Communications, 2008, Hangzhou, China

Abstract

The properties of crossing for two perpendicular subwavelength plasmonic slot waveguides are theoretically investigated. Results show when encountering a nano intersection the crosstalk for the direct crossing is around 25%, almost the same as throughput. In terms of symmetry considerations and resonant-tunnelling effect, we design two types of compact cavity-based structures. Our results show that the crosstalk is eliminated and the throughput reaches the unity on resonance. Simulation results are in agreement with those from coupled-mode theory. Taking material loss into account, the symmetry properties of the modes are preserved and the crosstalk remains suppressed. Our results may open a way to construct nanoscale crossings for high-density nanoplasmonic integration circuits.

Citation Download Citation

Sanshui Xiao and Niels Asger Mortensen "Low-loss intersection of subwavelength plasmonic slot waveguides", Proc. SPIE 7135, Optoelectronic Materials and Devices III, 71352J (18 November 2008); https://doi.org/10.1117/12.803459

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