公开(公告)号：US20180301591A1

公开(公告)日：2018-10-18

申请号：US15903200

申请日：2018-02-23

Applicant: HAMAMATSU PHOTONICS K.K.

Inventor： Masamichi YAMANISHI ,  Akira HIGUCHI ,  Toru HIROHATA ,  Kazunori TANAKA ,  Kazuue FUJITA ,  Yasufumi TAKAGI ,  Yuta AOKI ,  Satoru OKAWARA

IPC: H01L33/00 ,  H05B33/08 ,  H01L33/38 ,  H01L33/20 ,  H01L33/06 ,  H01L33/30 ,  H01L33/46 ,  H01L33/32

Abstract: An optical semiconductor element includes: an optical waveguide body; a first electrode that is disposed on a second clad layer; a second electrode that is disposed on the second clad layer on one side of the first electrode in a light guiding direction of the optical waveguide body; a third electrode that is disposed on the second clad layer on the other side of the first electrode in the light guiding direction; and at least one fourth electrode that faces the first electrode, the second electrode, and the third electrode with the optical waveguide body interposed therebetween. The optical waveguide body includes a first separation region that electrically separates a first region under the first electrode from a second region under the second electrode and a second separation region that electrically separates the first region under the first electrode and a third region under the third electrode.