Patent ID: 7831122
Filing Date: 2010-11-09
Classification: G02B,G02F

Abstract:
1. An optical control device having a substrate formed with an optical waveguide, wherein the substrate is a thin plate with a thickness of 10 μm or less, a reinforcing plate is adhered to the substrate with an adhesion layer interposed therebetween, at least a portion of the optical waveguide is configured as a ridge waveguide, a trench having a width of 10 μm or less is formed on both sides of at least portions of the ridge waveguide, and a taper waveguide section, which is disposed at least in one of a light input section and a light output section of the optical control device, continuously changes a light propagation mode of the waveguide between a single-mode and a multi-mode by continuously changing the width or depth of the trench.