Patent ID: 6356673
Filing Date: 2002-03-12
Classification: G02F

Abstract:
An electro-optic modulator comprising:a substrate having electro-optic effects; said substrate having a plurality of optical waveguides under a plurality of preselected ridge structures receiving and transmitting therethrough in a selected direction and with a first phase velocity; a buffer layer disposed on the plurality of ridge structures; a coplanar waveguide electrode structure disposed on a preselected plurality of ridge structures and receiving an electrical signal propagating in a first direction with a second phase velocity to modulate the light in the plurality of optical waveguides as a function and frequency of the electrical signal, said first and second phase velocities being approximately equal; and said coplanar waveguide structure further comprises a center electrode and two grounded electrodes which a reduced maximum total electrode horn width in combination with a maximum value of a reduced ground electrode width in the horn, so as to eliminate leaky mode loss.