Hybrid Coupling Between Long-Range Surface Plasmon Polariton Mode and Dielectric Waveguide Mode

Author

Liu, Fang ; Li, Yunxiang ; Wan, Ruiyuan ; Huang, Yidong ; Feng, Xue ; Zhang, Wei

Author_Institution

Dept. of Electron. Eng., Tsinghua Univ., Beijing, China

Volume

29

Issue

9

fYear

2011

fDate

5/1/2011 12:00:00 AM

Firstpage

1265

Lastpage

1273

Abstract

In this paper, the hybrid coupling between long-range surface plasmon polariton (LRSPP) waveguide mode and dielectric waveguide mode has been studied theoretically and experimentally in detail by considering its dependence on the structure parameters and wavelength. It is demonstrated that extremely high coupling efficiency (>;99%) has been achieved for TM polarization, while no coupling could happen for TE polarization between these two kinds of waveguides. Based on this hybrid coupler, a polarization splitter with pure TM-mode output from one arm and TE-mode output from the other arm with high TE/TM extinction ratio has been realized. Additionally, this kind of coupling between different waveguides is very significant for providing an effective approach to connect the LRSPP-based devices with the conventional dielectric devices.

Keywords

coupled mode analysis; dielectric waveguides; polaritons; surface plasmons; LRSPP-based devices; TE polarization; TM polarization; dielectric waveguide mode; hybrid coupling; long-range surface plasmon polariton mode; polarization splitter; structure parameters; Couplers; Couplings; Dielectrics; Gold; Optical waveguides; Silicon compounds; Strips; Hybrid coupler; polarization splitter; surface plasmon polariton (SPP);

fLanguage

English

Journal_Title

Lightwave Technology, Journal of

Publisher

ieee

ISSN

0733-8724

Type

jour

DOI

10.1109/JLT.2011.2115992

Filename

5714706