Title :
A Ti:LiNbO/sub 3/ optical intensity modulator with more than 20 GHz bandwidth and 5.2 V driving voltage
Author :
Noguchi, Kazuto ; Kawano, Kenji ; Nozawa, Toshinori ; Suzuki, Toshio
Author_Institution :
NTT Corp., Kanagawa, Japan
fDate :
4/1/1991 12:00:00 AM
Abstract :
A broadband and low driving-voltage Ti:LiNbO/sub 3/ optical intensity modulator is described. A coplanar waveguide with a shielding plane is used for optical-electrical velocity matching and a confined waveguide is used for lowering the driving voltage. The relationship between the mode size of the guided wave and the driving voltage is shown. This modulator has an electrical 3-dB bandwidth of more than 20 GHz and a driving voltage of 5.2 V at a wavelength of 1.5 mu m.<>
Keywords :
electro-optical devices; lithium compounds; optical modulation; optical waveguides; titanium; 20 GHz; 5.2 V; LiNbO/sub 3/:Ti; Ti:LiNbO/sub 3/ optical intensity modulator; broadband low driving voltage modulator; coplanar waveguide; mode size; optical-electrical velocity matching; shielding plane; Bandwidth; Coplanar waveguides; Electrodes; High speed optical techniques; Intensity modulation; Optical attenuators; Optical buffering; Optical modulation; Optical waveguides; Voltage;
Journal_Title :
Photonics Technology Letters, IEEE
