Loss-less multilevel crossing of busline waveguide in vertically coupled microring resonator filter

Author

Hatakeyama, Yutaka ; Hanai, Takamitsu ; Suzuki, Shuichi ; Kokubun, Yasuo

Author_Institution

Dept. of Phys., Yokohama Nat. Univ., Japan

Volume

16

Issue

2

fYear

2004

Firstpage

473

Lastpage

475

Abstract

To eliminate the scattering loss at the crossing points of cross grid busline waveguides, a multilevel crossing structure of busline waveguide was introduced into the vertically coupled microring resonator filter. The top surface of each buried waveguide was perfectly planarized by a new fabrication process and clear filter responses were observed for a single ring and a series coupled double ring resonator with multilevel crossing busline waveguides.

Keywords

micro-optics; microcavities; optical fabrication; optical filters; optical losses; optical planar waveguides; optical resonators; optical waveguide filters; planarisation; buried waveguide; cross grid busline waveguide; filter response; loss-less multilevel crossing; multilevel crossing busline waveguides; planarization; scattering loss; series coupled double ring resonator; single ring resonator; vertically coupled microring resonator filter; Light scattering; Optical device fabrication; Optical filters; Optical ring resonators; Optical scattering; Optical surface waves; Optical waveguides; Planar waveguides; Resonator filters; Surface waves;

fLanguage

English

Journal_Title

Photonics Technology Letters, IEEE

Publisher

ieee

ISSN

1041-1135

Type

jour

DOI

10.1109/LPT.2003.822229

Filename

1266461