Low-loss intersection of subwavelength plasmonic slot waveguides
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 e.ect, 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.
Surface plasmons Guided waves Integrated optics devices Resonant-tunnelling effect
Sanshui Xiao Niels Asger Mortensen
DTU Fotonik,Department of Photonics Engineering,Technical University of Denmark,DK-2800 Kongens Lyngby,Denmark.
国际会议
2008亚太光通信会议(Asia-Pacific Optical Communications 2008)
杭州
英文
2008-10-26（万方平台首次上网日期，不代表论文的发表时间）