Efficient Unidirectional Optical Coupling for Hybrid Plasmonic Waveguide

Author

Chih-Chun Ho ; Fan Lu ; Kun Li ; Dalin Liu ; Anshi Xu

Author_Institution

State Key Lab. of Adv. Opt. Commun. Syst., Peking Univ., Beijing, China

Volume

26

Issue

17

fYear

2014

fDate

Sept.1, 1 2014

Firstpage

1730

Lastpage

1733

Abstract

A new type of efficient and unidirectional optical coupler composed of periodic nanoslits milled in the metallic surface is proposed for the hybrid plasmonic waveguides. The operation principle is clarified and theoretically illustrated by using the coupled-mode model and the fully vectorial aperiodic Fourier modal method. The coupling efficiency of more than 50% and splitting ratios better than 18 dB at the incident angle θ= 12° could be achieved over the C-band ranging from 1530 to 1570 nm.

Keywords

Fourier transform optics; coupled mode analysis; nanophotonics; nanostructured materials; optical couplers; optical waveguide theory; plasmonics; C-band; coupled-mode model; coupling efficiency; fully vectorial aperiodic Fourier modal method; hybrid plasmonic waveguide; incident angle; metallic surface; periodic nanoslits; splitting ratio; unidirectional optical coupler; unidirectional optical coupling; wavelength 1530 nm to 1570 nm; Couplers; Couplings; Metals; Optical surface waves; Optical waveguides; Optimized production technology; Plasmons; Engineered photonic nanostructures; gratings; hybrid plasmonic waveguides;

fLanguage

English

Journal_Title

Photonics Technology Letters, IEEE

Publisher

ieee

ISSN

1041-1135

Type

jour

DOI

10.1109/LPT.2014.2332151

Filename

6840984