Electrode Design of Polymer Electro-optic Modulator with Ultra- broadband

摘要

The characteristics of the modulators with hybrid electrode is like that of the modulator with the microstrip lines, besides the problem of microstrip line to coaxial transition and corona polarization in polymer modulators have been best solved. By using finite element method (FEM), the characteristic parameters such as half-wave voltage, modulation bandwidth, characteristic impedance, and effective microwave refractive index of polymer modulators with microstrip line and hybrid electrode are analysed and compared. The results present that velocity match, impendence match and lower microwave propagating loss is easily realized in modulators with hybrid electrode.