Semiconductor optical device

Patent metadata

Field	Value
Publication number	US-9122003-B2
Application number	US-201313933511-A
Country	US
Kind code	B2
Filing date	Jul 2, 2013
Priority date	Jul 18, 2012
Publication date	Sep 1, 2015
Grant date	Sep 1, 2015

Abstract

A semiconductor optical device includes a light receiving device; an optical waveguide having a mesa structure, the optical waveguide including first, second, third, and fourth waveguide portions; and a passivation layer provided on a side surface of the light receiving device. The mesa structure in the second waveguide portion has a width increasing along the waveguide axis, and the mesa structure in the third waveguide portion has a width decreasing along the waveguide axis. The second waveguide portion includes first and second regions, the first region being optically coupled to the first waveguide portion and the second region being optically coupled to the third waveguide portion. The passivation layer is provided on side surfaces of the mesa structure in the second region, the third waveguide portion, and the fourth waveguide portion. The mesa structures in the first waveguide portion and the first region have side surfaces without the passivation layer.

First claim

What is claimed is:

1. A semiconductor optical device, comprising:
a light receiving device;
an optical waveguide having a mesa structure, the optical waveguide including a first waveguide portion, a second waveguide portion, a third waveguide portion, and a fourth waveguide portion, which are arranged along a waveguide axis; and
a passivation layer provided on a side surface of the light receiving device,
wherein the second waveguide portion is optically coupled to the firs…

Assignees

• Sumitomo Electric Industries

Inventors

• Onishi Yutaka

Classifications

• G02B6/12004 Primary

  Physics · mapped topic

• G02B6/1228

  Physics · mapped topic

• G02B6/125

  Physics · mapped topic

• G02B6/12 Primary

  Physics · mapped topic

• G02B6/2813

  Physics · mapped topic