Title :
Modeling and analysis of broadband LiNbO3 optical modulators with a ridge structure
Author :
El-Fadl, A. A Abou ; Zarea, A. ; Ba-Rukab, O.
Author_Institution :
Jeddah Coll. of Electron. Technol., Jeddah, Saudi Arabia
Abstract :
Hybrid-mode analysis is carried out for coplanar waveguides applicable to Z-cut Ti:LiNbO3 optical modulators with a ridge structure. The analysis is based on the integral equations. Generalized trial quantities are introduced as virtual adjustable sources in the equivalent representation of the structure. The microwave effective index, attenuation constant and characteristic impedance as functions of frequency are computed. The effect of ridge height on the performance of the modulator is studied. The optical response as a function of frequency is also calculated. The obtained results are compared with the data furnished by the literature. A good accuracy is obtained
Keywords :
Mach-Zehnder interferometers; coplanar waveguides; electric impedance; integral equations; integrated optics; lithium compounds; optical modulation; optical waveguide theory; titanium; LiNbO3:Ti; Z-cut Ti:LiNbO3 optical modulators; attenuation constant; broadband LiNbO3 optical modulators; characteristic impedance; coplanar waveguide; frequency; hybrid-mode analysis; integral equations; microwave effective index; performance; ridge height; ridge structure; virtual adjustable sources; Apertures; Coplanar waveguides; Electrodes; Equivalent circuits; Moment methods; Optical modulation; Power supplies; Skin; Surface impedance; Transmission line matrix methods;
Conference_Titel :
Electrical and Computer Engineering, 2000 Canadian Conference on
Conference_Location :
Halifax, NS
Print_ISBN :
0-7803-5957-7
DOI :
10.1109/CCECE.2000.849613
