A Fundamental Limit on Propagation Loss of Waveguides with Subwavelength Mode Size
Optics
2014-11-18 v1
Abstract
A fundamental trade-off relation between the cross sectional confinement and propagation length of an arbitrary mode of a general waveguide is presented. This limit is a generalization of the well-known diffraction limit for guided modes. The results provide a lower bound on propagation loss of plasmonic waveguides which are attractive for their deep subwavelength mode dimensions. We also introduce a material loss merit factor that sets a criterion for comparing different plasmonic materials for achieving the best trade-off between confinement and loss.
Keywords
Cite
@article{arxiv.1411.4402,
title = {A Fundamental Limit on Propagation Loss of Waveguides with Subwavelength Mode Size},
author = {Amir Arbabi and Ehsan Arbabi and Safieddin Safavi-Naeini},
journal= {arXiv preprint arXiv:1411.4402},
year = {2014}
}