Title :
Characteristics of coplanar waveguides with metal coating on multilayer substrate: application to broadband LiNbO/sub 3/:Ti traveling wave light modulators/switch
Author :
Bourreau, D. ; Guillon, P.
Author_Institution :
Fac. of Sci., Limoges Univ., France
Abstract :
A design is proposed for nonsymmetric electrodes for a broadband electrooptic modulator with low drive voltage. Traveling-wave electrodes, laterally shifted to reverse the direction of the applied electric field, are used to obtain constant phase variation. The finite-element method is used to compute the electrodes´ characteristics taking into account both electrodes and buffers thickness. Numerical results are given for LiNbO/sub 3/:Ti substrate material at 1.52- mu m wavelength.<>
Keywords :
electro-optical devices; lithium compounds; optical communication equipment; optical links; optical modulation; titanium; waveguide components; 1.52 micron; LiNbO/sub 3/:Ti substrate; application; broadband electrooptic modulator; buffers thickness; constant phase variation; coplanar waveguides with metal coating; electrode characteristics; electrode thickness; finite-element method; light switch; low drive voltage; multilayer substrate; nonsymmetric electrodes; travelling wave electrodes; travelling wave light modulator; wavelength; Buffer layers; Coatings; Coplanar waveguides; Electrodes; Nonhomogeneous media; Optical buffering; Optical modulation; Optical waveguides; Strips; Titanium;
Conference_Titel :
Microwave Symposium Digest, 1988., IEEE MTT-S International
Conference_Location :
New York, NY, USA
DOI :
10.1109/MWSYM.1988.22218
