Complete spectral gap in coupled dielectric waveguides embedded into metal
Optics
2011-12-21 v1
Abstract
We study a plasmonic coupler involving backward (TM_01) and forward (HE_11) modes of dielectric waveguides embedded into infinite metal. The simultaneously achievable contradirectional energy flows and codirectional wavevectors in different channels lead to a spectral gap, despite the absence of periodic structures along the waveguide. We demonstrate that a complete spectral gap can be achieved in a symmetric structure composed of four coupled waveguides.
Keywords
Cite
@article{arxiv.1005.1111,
title = {Complete spectral gap in coupled dielectric waveguides embedded into metal},
author = {Wei Liu and Andrey Sukhorukov and Andrey Miroshnichenko and Chris Poulton and Zhiyong Xu and Dragomir Neshev and Yuri Kivshar},
journal= {arXiv preprint arXiv:1005.1111},
year = {2011}
}
Comments
3 pages, 4 figures