Traveling-wave type LiNbO/sub 3/ optical modulator with a superconducting coplanar waveguide electrode

Author

Yoshida, K. ; Minami, A. ; Kanda, Y.

Author_Institution

Dept. of Electron. Device Eng., Kyushu Univ., Fukuoka, Japan

Volume

7

Issue

2

fYear

1997

fDate

6/1/1997 12:00:00 AM

Firstpage

3508

Lastpage

3511

Abstract

Microwave characteristics of a LiNbO/sub 3/ optical modulator employing a superconductor electrode (Nb) as a transmission line of a traveling signal has been studied experimentally in the temperature range from 300 K to 4.2 K. In the frequency range between dc and 26.5 GHz it is shown that the obtained modulation depth is in good agreement with the theoretically expected one. The present results demonstrate the possible applications of superconducting electrodes to high performance LiNbO/sub 3/ optical modulators.

Keywords

coplanar waveguides; electro-optical modulation; electrodes; lithium compounds; superconducting microwave devices; 0 to 26.5 GHz; 4.2 to 300 K; LiNbO/sub 3/; Nb; microwave characteristics; superconducting coplanar waveguide electrode; transmission line; traveling-wave optical modulator; Coplanar waveguides; Electrodes; High speed optical techniques; Optical attenuators; Optical buffering; Optical modulation; Optical refraction; Optical variables control; Optical waveguides; Superconducting transmission lines;

fLanguage

English

Journal_Title

Applied Superconductivity, IEEE Transactions on

Publisher

ieee

ISSN

1051-8223

Type

jour

DOI

10.1109/77.622150

Filename

622150