Patent ID: 9671574
Date: 2017-06-06
CPC Classifications: G02B

Claim:
1. An optical integrated circuit comprising: a substrate; an optical waveguide formed by sequentially stacking a lower cladding layer, a core layer, and an upper cladding layer on the substrate; a groove formed by etching the upper cladding layer, the core layer, and all or parts of the lower cladding layer disposed close to an end face of the optical waveguide to intercept light transmitted through the core of the optical waveguide or to couple light into the core of the optical waveguide; a plurality of bonding pads formed spaced apart from each other on the surface of the optical waveguide around the periphery of the groove; a micro-mirror having at least one slanted side surface inclined to a range of 30° to 60° with respect to the bottom surface and cemented on the bottom of the groove to reflect light exits horizontally from the core layer to the groove and turn the light path vertically toward upper side of the groove, or conversely, to reflect light emitted vertically from the upper side of the groove toward the surface of the groove and turn the light path horizontally to the core layer; an active optical element which is bonded by the bonding pads, and emits light toward the slanted side surface of the micro-mirror, or conversely, receives light reflected from the slanted side surface of the micro-mirror; and a recess formed by etching a part of the upper cladding layer before the groove is formed excluding an area in which the bonding pads are to be formed, wherein the groove is formed inside the recess area.