Patent ID: 7319800
Filing Date: 2008-01-15
Classification: G02F

Abstract:
1. An optical waveguide device comprising: a substrate comprising an electro-optical material; an optical waveguide formed in or on the substrate and comprising at least a first branch and a second branch; a signal electrode; a first ground electrode; and a second ground electrode, wherein a voltage is applied on said first branch by means of said first ground electrode and said signal electrode, a voltage is applied on said second branch by means of said second ground electrode and said signal electrode, a first gap is formed between said first ground electrode and said signal electrode, a second gap is formed between said second ground electrode and said signal electrode, each of the first gap and the second gap is respectively divided into a voltage applying portion, a feed-through portion, and a connection portion therebetween, and the first gap and the second gap satisfy the following formula: where G wherein said first ground electrode and said second ground electrode are positioned to extend along and oppose said signal electrode along the entire length of said voltage applying portion.