Patent ID: 8295663

Claim:
A super-luminescent light emitting diode comprising: a semiconductor substrate; a multimode interference optical waveguide that is formed on said semiconductor substrate; a first optical waveguide which is formed on said semiconductor substrate, of which one end is optically connected to one end of said multimode interference optical waveguide, and of which an other end forms a first light emitting edge; and a second optical waveguide which is formed on said semiconductor substrate, of which one end is optically connected to an other end of said multimode interference optical waveguide, and of which an other end forms a second light emitting edge, wherein each of said first and second optical waveguides comprises a width that is smaller than a width of said multimode interference optical waveguide, wherein said first light emitting edge is inclined to an optical axis of said first optical waveguide at the other end of said first optical waveguide, and wherein said second light emitting edge is inclined to an optical axis of said second optical waveguide at the other end of said second optical waveguide; wherein the optical axis of the first light emitting edge forms an angle with the first light emitting edge, and the angle comprises a range of three degrees to twenty degrees.