Patent ID: 6304685
Filing Date: 2001-10-16
Classification: G02F

Abstract:
An electro-optic modulator comprising:a substrate having an electro-optic effect, and a plurality of optical waveguides for receiving and transmitting light therethrough in a selected direction and with a first phase velocity;said substrate having a plurality of etched ridge structures of a predetermined depth and separation between ridges;a buffer layer disposed on the plurality of ridge structures;a microwave waveguide electrode structure disposed on a preselected plurality of preselected ridge structures and receiving an electrical signal, propagating in said selected direction with a second phase velocity, modulating the light in the plurality of optical waveguides traveling in said selected direction as a function and frequency of the electrical signal, said first phase velocity being substantially the same as said second phase velocity;said microwave electrode structure being comprised of a center electrode and two grounded electrodes, andwherein the inter-electrode gap width, W, between the center electrode and the grounded electrodes is greater than 30 .mu.m.