Title :
Modelling and analysis of coplanar waveguide for LiNbO3 optical modulators
Abstract :
Hybrid-mode analysis is carried out for coplanar waveguide applicable to Z-cut Ti:LiNbO3 optical modulators. The analysis is based on the integral equations. Generalized trial quantities are introduced as virtual adjustable sources in the equivalent network representation of the structure. The microwave effective index and the characteristic impedance as a function of the operating frequency of the coplanar are computed. The effect of the buffer layer thickness on both the microwave effective index and the characteristic impedance is studied. The effect of the structure dimensions on both the microwave effective index and the characteristic impedance is also discussed. Finally, the obtained results are compared and the data furnished by the literature. A good accuracy is obtained
Keywords :
equivalent circuits; integral equations; lithium compounds; modal analysis; optical communication equipment; optical modulation; optical planar waveguides; optical waveguide theory; LiNbO3:Ti; Z-cut optical modulators; buffer layer thickness; characteristic impedance; coplanar waveguide; equivalent network representation; generalized trial quantities; hybrid-mode analysis; integral equations; microwave effective index; operating frequency; optical communication systems; structure dimensions; virtual adjustable sources; Bandwidth; Buffer layers; Coplanar waveguides; Electrodes; High speed optical techniques; Impedance; Integral equations; Optical buffering; Optical modulation; Optical waveguides;
Conference_Titel :
Radio Science Conference, 2000. 17th NRSC '2000. Seventeenth National
Conference_Location :
Minufiya
Print_ISBN :
977-5031-64-8
DOI :
10.1109/NRSC.2000.838907
