Flexible Coupling Ratio in Single Ring Resonator Through Active Vertical Coupler

Author

Zhang, Ruiying ; Ren, Z. ; Ansell, O. ; Yu, S.

Author_Institution

Dept. of Electr. & Electron. Eng., Bristol Univ., Bristol

Volume

20

Issue

13

fYear

2008

fDate

7/1/2008 12:00:00 AM

Firstpage

1202

Lastpage

1204

Abstract

A flexibly coupled semiconductor rectangular ring resonator based on a two-section active vertical coupler is demonstrated. The measured and calculated results show consistently varied thresholds and coupling ratio dependent on coupling length and internal loss. For the same configuration devices, the adjustable range of the coupling ratio widens with the reflectivity of the total internal reflection mirrors; for the same reflectivity, such range widens with the coupling length. The widest range of 0.0076-0.4707 is achieved in the device with m. Flexible coupling should increase the tolerance of device design and fabrication and bring a benefit to very large scale integration.

Keywords

integrated optics; mirrors; optical couplers; optical losses; optical resonators; semiconductor devices; flexible coupling ratio; internal loss; mirrors; reflectivity; semiconductor rectangular ring resonator; single ring resonator; total internal reflection; two-section active vertical coupler; Automatic voltage control; Couplings; Optical device fabrication; Optical filters; Optical reflection; Optical ring resonators; Optical waveguides; Reflectivity; Very large scale integration; Waveguide transitions; Active vertical coupler (AVC); coupling ratio; ring resonator; very large scale integration (VLSI);

fLanguage

English

Journal_Title

Photonics Technology Letters, IEEE

Publisher

ieee

ISSN

1041-1135

Type

jour

DOI

10.1109/LPT.2008.925486

Filename

4544844