公开(公告)号：US20170227798A1

公开(公告)日：2017-08-10

申请号：US15515098

申请日：2015-09-30

Applicant: SUMITOMO OSAKA CEMENT CO., LTD.

Inventor： Yoshizumi ISHIKAWA ,  Youichi HOSOKAWA ,  Masayuki MOTOYA ,  Satoshi OIKAWA

IPC: G02F1/03 ,  G02F1/065 ,  G02F1/035

CPC classification number: G02F1/0316 ,  G02F1/01 ,  G02F1/035 ,  G02F1/0356 ,  G02F1/065 ,  G02F1/313 ,  G02F2201/46 ,  G02F2202/20

Abstract: An optical device is provided, which includes: an optical waveguide provided in a substrate having an electro-optic effect; a signal electrode provided on the substrate and above the optical waveguide; and a peeling prevention film which is provided on at least a part of an outer peripheral portion of the substrate and at a position spaced apart from the signal electrode, and also serves as a ground electrode.

公开(公告)号：US20210018771A1

公开(公告)日：2021-01-21

申请号：US17042732

申请日：2019-02-26

Applicant: SUMITOMO OSAKA CEMENT CO., LTD.

Inventor： Takatomo ITOU ,  Yoshizumi ISHIKAWA ,  Shingo TAKANO

IPC: G02F1/035

Abstract: An optical modulator according to the present invention comprises: a substrate which has electro-optic effects; an optical waveguide which is provided in the substrate; an optical fiber which is bonded to an end of the optical waveguide; a fixation member which is provided on an end part of the optical fiber; and an optical adhesive layer which bonds the optical fiber and the substrate to each other. The end of the optical waveguide is arranged in an end face of the substrate; the optical adhesive layer optically couples an end face of the optical fiber and an end of the optical waveguide with each other, while bonding the optical fiber, the fixation member and the substrate with each other; and the surface roughness of a surface of the fixation member, wherein the surface faces the end face of the substrate, is different from the surface roughness of an end face of the substrate, wherein the end face faces the surface of the fixation member.

公开(公告)号：US20190302355A1

公开(公告)日：2019-10-03

申请号：US16367726

申请日：2019-03-28

Applicant: Sumitomo Osaka Cement Co., Ltd.

Inventor： Shingo TAKANO ,  Yuki KUGIMOTO ,  Yoshizumi ISHIKAWA

IPC: G02B6/02 ,  G02B6/122 ,  G02F1/065 ,  G02F1/00

Abstract: An optical device including a core layer that includes an EO polymer, and clad layers that are disposed on and beneath the core layer, in which a polymer polymerized in a composition containing a reactive ionic liquid is used in the clad layers.