DocumentCode
851005
Title
A novel directional coupler utilizing a left-handed material
Author
Xiao, Sanshui ; Shen, Linfang ; He, Sailing
Author_Institution
Centre for Opt. & Electromagn. Res., Zhejiang Univ., Hangzhou, China
Volume
16
Issue
1
fYear
2004
Firstpage
171
Lastpage
173
Abstract
A novel directional coupler with a left-handed material (LHM) layer between two single-mode (SM) waveguides of usual material is introduced. The coupling system is analyzed with the supermode theory. It is shown that such an LHM layer of finite length can shorten significantly the coupling length for the two SM waveguides. An LHM layer with two slowly tapered ends is used to avoid the reflection loss at the ends.
Keywords
coupled mode analysis; optical directional couplers; optical planar waveguides; optical waveguide theory; refractive index; E-polarized modes; H-polarized modes; coupling length; directional coupler; effective index method; finite length layer; left-handed material layer; optical planar waveguide couplers; single-mode waveguides; slowly tapered ends; supermode theory; Directional couplers; Electromagnetic waveguides; Magnetic materials; Metamaterials; Optical interferometry; Optical materials; Optical refraction; Optical surface waves; Optical waveguides; Samarium;
fLanguage
English
Journal_Title
Photonics Technology Letters, IEEE
Publisher
ieee
ISSN
1041-1135
Type
jour
DOI
10.1109/LPT.2003.818950
Filename
1255988
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