公开(公告)号：US20240329340A1

公开(公告)日：2024-10-03

申请号：US18619829

申请日：2024-03-28

Applicant: TDK CORPORATION

Inventor： Kenji NAGASE ,  Hiroshi TAKE ,  Shuntaro KODAMA ,  Ryohei FUKUZAKI

IPC: G02B6/42

CPC classification number: G02B6/4239

Abstract: An optical device includes: a substrate having a pair of main surfaces opposite each other in a first direction, end surfaces adjacent to the main surfaces, and a pair of side surfaces, and an optical waveguide, disposed along the main surface of the substrate and having a light incidence end or a light exit end in the direction of a plane where the end surface is located, wherein, an adhesive for connection is coated on the end surface of the substrate, and at least one stepped portion is formed between the optical waveguide and the adhesive.

公开(公告)号：US20240329306A1

公开(公告)日：2024-10-03

申请号：US18620035

申请日：2024-03-28

Applicant: TDK CORPORATION

Inventor： Shuntaro KODAMA ,  Hiroshi TAKE ,  Kenji NAGASE ,  Ryohei FUKUZAKI

IPC: G02B6/122 ,  G02B6/12

CPC classification number: G02B6/122 ,  G02B2006/12097

Abstract: An optical device includes: a substrate having a pair of main surfaces opposite each other in a first direction and an end surface adjacent to the main surface, and an optical waveguide formed on the substrate and having a light incident surface or a light exit surface in a direction of a plane where the end surface is located, where at least a central portion of the light incident surface and/or light exit surface of the optical waveguide includes an inclined surface having a preset angle with respect to the end surface of the substrate.

公开(公告)号：US20230296929A1

公开(公告)日：2023-09-21

申请号：US18164712

申请日：2023-02-06

Applicant: TDK Corporation

Inventor： Hiroki HARA ,  Takashi KIKUKAWA ,  Hiroshi TAKE ,  Kenji NAGASE ,  Shuntaro KODAMA

IPC: G02F1/03 ,  G02F1/035 ,  G02F1/21 ,  G02F1/225

CPC classification number: G02F1/0305 ,  G02F1/035 ,  G02F1/212 ,  G02F1/2255 ,  G02F2202/20

Abstract: An optical modulation element is provided with a substrate, a waveguide layer formed on the substrate, a dielectric layer formed on the waveguide layer, and an electrode formed on the dielectric layer. An outer peripheral end portion of the dielectric layer has an offset area positioned inside an outer peripheral end portion of the substrate. In at least a part of the offset area, a distance from the outer peripheral end portion of the substrate to the outer peripheral end portion of the dielectric layer is equal to or less than a distance from the outer peripheral end portion of the substrate to the outer peripheral end portion of the electrode.