Patent ID: 9690178
Date: 2017-06-27
CPC Classifications: G03B,H01L

Claim:
1. A light emitting device comprising: a first cladding layer; an active layer provided on the first cladding layer, the active layer being configured to generate light in accordance with a current injected thereinto; a second cladding layer provided on the active layer, the second cladding layer including a ridge portion, the ridge portion being thicker than a remaining portion of the second cladding layer; and a first electrode and a second electrode that inject the current into the active layer, wherein the second electrode is provided over the ridge portion, wherein the ridge portion has a constant width in a plan view, wherein the second cladding layer includes an electrical connection region electrically connected to the second electrode, wherein the active layer constitutes a light waveguide through which the light is guided in a region overlapping the ridge portion in the plan view, wherein the light waveguide has a first light emission surface and a second light emission surface from which the light is emitted, and wherein, in the plan view, a width of the electrical connection region at a central position equidistant from the first light emission surface and the second light emission surface is smaller than a width of an end of the electrical connection region in an extending direction of the light waveguide.