Patent ID: 6243505
Filing Date: 2001-06-05
Classification: G02F

Abstract:
An optical modulator for operation at a selected working frequency in the range 500 MHZ-3 GHz, corresponding to a wavelength .lambda., the modulator comprising:a substrate;a waveguide formed in the substrate and having an input, an output, and an index of refraction; anda traveling wave-type electrode structure having first and second branches to establish an electrode length L, the ratio .mu./L having a value between 2.1 and 4.0 and the electrode structure being formed on the structure in relation to the waveguide to effect electro-optical variation of the index of refraction upon application to the electrode structure of a modulating signal at the working frequency;the modulator comprising an electrical conductor connecting the first and second branches of said electrode structure to form short-circuit termination of the electrode structure.