Grating assisted waveguide-to-waveguide couplers

Author

Liang, Tao ; Ziolkowski, Richard W.

Author_Institution

Electromagnetics Lab., Arizona Univ., Tucson, AZ, USA

Volume

10

Issue

5

fYear

1998

fDate

5/1/1998 12:00:00 AM

Firstpage

693

Lastpage

695

Abstract

A new radiation-type waveguide-to-waveguide coupler is proposed. The coupling is realized through gratings embedded on the dielectric waveguides involved. Compared to the conventional hybrid-mode coupler, this type of coupler has advantages in that the two waveguides can be quite dissimilar as well as being separated by large distances. It is demonstrated that the coupling performance of this radiation-type coupler can be enhanced significantly by using photonic bandgap (PBG) structures.

Keywords

diffraction gratings; finite difference time-domain analysis; integrated optics; optical communication equipment; optical couplers; optical design techniques; optical waveguide theory; photonic band gap; conventional hybrid-mode coupler; coupling performance; dielectric waveguides; grating assisted waveguide-to-waveguide couplers; integrated optics; large distances; optical communications equipment; photonic bandgap structures; radiation-type coupler; radiation-type waveguide-to-waveguide coupler; Couplers; Dielectrics; Electromagnetic waveguides; Finite difference methods; Gratings; Mirrors; Optical waveguide theory; Optical waveguides; Photonic band gap; Time domain analysis;

fLanguage

English

Journal_Title

Photonics Technology Letters, IEEE

Publisher

ieee

ISSN

1041-1135

Type

jour

DOI

10.1109/68.669328

Filename

669328