公开(公告)号：US20240231134A1

公开(公告)日：2024-07-11

申请号：US18281107

申请日：2021-09-30

Applicant: SUMITOMO OSAKA CEMENT CO., LTD.

Inventor： Shoutarou HIRATA ,  Shingo TAKANO

IPC: G02F1/035 ,  G02F1/03

CPC classification number: G02F1/0356 ,  G02F1/0311 ,  G02F1/0327 ,  G02F2201/063

Abstract: An object is to provide an optical waveguide device including a dielectric layer covering an optical waveguide, in which occurrence of a problem such as peeling or cracking of the dielectric layer is suppressed. An optical waveguide device of the present invention includes an optical waveguide 2 formed on a substrate 1, and a dielectric layer IL covering the optical waveguide, in which the optical waveguide 2 is a rib type optical waveguide, and at least a part of a side surface of the rib type optical waveguide along a longitudinal direction has a slope shape formed with a curved surface (R6).

公开(公告)号：US20210302764A1

公开(公告)日：2021-09-30

申请号：US17207389

申请日：2021-03-19

Applicant: SUMITOMO OSAKA CEMENT CO., LTD.

Inventor： Shingo TAKANO ,  Yu KATAOKA ,  Shoutarou HIRATA

IPC: G02F1/035

Abstract: An optical waveguide device including a rib-type optical waveguide 2 formed of a material having an electro-optic effect, and a reinforcing substrate 1 that supports the rib-type optical waveguide, one end of the rib-type optical waveguide 2 has a tapered portion 20, structures 4 are provided that are disposed apart from the tapered portion so as to sandwich the tapered portion and are disposed on the reinforcing substrate 1, an upper substrate is disposed above the tapered portion and the structures, and an adhesive layer is disposed in a space sandwiched between the upper substrate and the structures.