Title :
A broadband Ti:LiNbO3 optical modulator with a ridge structure
Author :
Noguchi, Kazuto ; Mitomi, Osamu ; Miyazawa, Hiroshi ; Seki, Shunji
Author_Institution :
NTT Opto-Electron. Labs., Kanagawa, Japan
fDate :
6/1/1995 12:00:00 AM
Abstract :
We describe the design, fabrication, and characteristics of a Ti:LiNbO3 optical modulator with a ridge structure. The structure keeps microwave propagation loss low and enables a large interaction between microwaves and optical waves under the conditions of velocity-matching and impedance matching, resulting in a large modulation bandwidth and low driving voltage. Using this structure, we have developed an optical intensity modulator with an optical 3-dB bandwidth of 75 GHz and a driving voltage of 5.0 V at a wavelength of 1.5 μm
Keywords :
broadband networks; electro-optical modulation; impedance matching; integrated optics; lithium compounds; microwave propagation; optical communication equipment; optical design techniques; optical fabrication; optical fibre networks; titanium; 1.5 mum; 5 V; 75 GHz; LiNbO3:Ti; broadband Ti:LiNbO3 optical modulator; characteristics; design,; driving voltage; fabrication; impedance matching; large interaction; large modulation bandwidth; low driving voltage; microwave propagation loss; microwaves; optical intensity modulator; optical waves; ridge structure; velocity-matching; Bandwidth; Coplanar waveguides; Electrodes; High speed optical techniques; Intensity modulation; Optical buffering; Optical design; Optical modulation; Optical waveguides; Propagation losses;
Journal_Title :
Lightwave Technology, Journal of
