Patent ID: 6600844
Filing Date: 2003-07-29
Classification: G02F

Abstract:
An optical delay generator comprising:a first optical waveguide comprising electro-optically active material, said first waveguide having a longitudinal axis, wherein optical signals propagate within said waveguide in a direction substantially parallel to said longitudinal axis; a chirped distributed Bragg reflector structure formed within said first waveguide, said chirped distributed Bragg reflector structure having a direction of propagation substantially parallel to said longitudinal axis and reflecting optical signals in a direction substantially opposite to said direction of propagation; a first elongate electrode disposed adjacent a first side of said first optical waveguide; a second elongate electrode disposed adjacent a second side of said first optical waveguide, wherein a voltage applied between said first electrode and said second electrode generates an electric field across said chirped distributed Bragg reflector structure, said electric field having a direction normal to said direction of propagation; and a second optical waveguide disposed adjacent to and substantially parallel to said first optical waveguide, said second optical waveguide being resonantly coupled to said first optical waveguide to receive optical signals reflected by said chirped distributed Bragg reflector structure.