Patent ID: 9711938
Date: 2017-07-18
CPC Classifications: G02B,G02F,H01S

Claim:
1. An integrated semiconductor optical element, comprising a waveguide in stripe form having a multilayer structure where at least a first conductivity type lower clad layer, a waveguide core layer and an upper clad layer are layered on top of a semiconductor substrate, characterized in that the upper clad layer has: second conductivity type upper clad layer portions that are of the conductivity type opposite to the first conductivity type and are separated from each other in the direction in which the waveguide runs; and an i type upper clad layer portion that connects the separated second conductivity type upper clad layer portions, and at least one waveguide region provided with the first conductivity type lower clad layer, the waveguide core layer and the i type upper clad layer portion and at least two waveguide regions provided with the first conductivity type lower clad layer, the waveguide core layer and the second conductivity type upper clad layer portion are shifted from each other in the direction perpendicular to the direction in which a main portion of the waveguide runs, and the waveguide region provided with the first conductivity type lower clad layer, the waveguide core layer and the i type upper clad layer portion and the waveguide regions provided with the first conductivity type lower clad layer, the waveguide core layer and the second conductivity type upper clad layer portion are connected through bent portions.