Title :
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
fDate :
6/1/1997 12:00:00 AM
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;
Journal_Title :
Applied Superconductivity, IEEE Transactions on
