Patent ID: 8911093

Claim:
A light emitting device comprising: a first layer that generates light by an injection current; and a second layer and a third layer that sandwich the first layer and suppress leakage of the light, wherein the first layer is provided with a first optical waveguide having a belt shape extending from a first light emitting section disposed on a first side surface of the first layer to a first light reflecting section disposed on a second side surface of the first layer, a second optical waveguide having a belt shape extending from the first light reflecting section to a second light reflecting section disposed on a third side surface of the first layer, and a third optical waveguide having a belt shape extending from the second light reflecting section to a second light emitting section disposed on the first side surface, an extending direction of the second optical waveguide is parallel to an in-plane direction of the first side surface, an element from one of group II or group XII of the periodic table of elements is diffused in the first light reflecting section and the second light reflecting section, and a first light emitted from the first light emitting section and a second light emitted from the second light emitting section travel in the same direction.