Patent ID: 8369203
Filing Date: 2013-02-05
Classification: B82Y,G02B,G11B

Abstract:
1. An optical waveguide for introducing a light beam that is emitted from a light emitting element, wherein the optical waveguide is structured having a core that is a waveguide through which light propagates and a clad that surrounds the periphery thereof, and a refractive index of a material that forms the core is larger than a refractive index of a material that forms the clad; and the core provides a light incident end surface that is one side where light enters and a light emitting end surface that emits the light that propagates within the waveguide, and a phase alignment concave part that is a depression formed on the light incident end surface that is one side where light enters, wherein the phase alignment concave part is structured to align phases of light beams to increase optical coupling efficiency, and the light beams are emitted from the light emitting element and enter into the optical waveguide.