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公开(公告)号：US20230004028A1
公开(公告)日：2023-01-05
申请号：US17725944
申请日：2022-04-21
Applicant: FUJITSU OPTICAL COMPONENTS LIMITED
Inventor： Shuntaro MAKINO , Yoshinobu KUBOTA , Yasuhiro OHMORI , Masaharu DOI , Masaki SUGIYAMA , Shintaro TAKEUCHI , Yoshihiko YOSHIDA , Shinji MARUYAMA , Teruo KURAHASHI
Abstract: An optical device includes a thin film Lithium Niobate (LN) layer, a first optical waveguide, and a second optical waveguide. The thin film LN layer is an X-cut or a Y-cut LN layer. The first optical waveguide is an optical waveguide that is formed on the thin film LN layer along a direction that is substantially perpendicular to a Z direction of a crystal axis of the thin film LN layer. The second optical waveguide is an optical waveguide that is routed and connected to the first optical waveguide. At least a part of a core of the first optical waveguide is made thicker than a core of the second optical waveguide.
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公开(公告)号：US20230161184A1
公开(公告)日：2023-05-25
申请号：US17947657
申请日：2022-09-19
Applicant: FUJITSU OPTICAL COMPONENTS LIMITED
Inventor： Shuntaro MAKINO , Teruo KURAHASHI , Yoshinobu KUBOTA , Yoshihiko YOSHIDA , Nobuaki MITAMURA , Takehito TANAKA
IPC: G02F1/035
CPC classification number: G02F1/035
Abstract: An optical device includes a substrate, a first cladding layer that is laminated on one surface of the substrate, and a first optical waveguide that is formed in the first cladding layer at a side opposite to the substrate in the first cladding layer. The optical device further includes an electro-optic crystal layer that is laminated on a surface of the first cladding layer at a side opposite to the substrate, and a second optical waveguide that is formed of the electro-optic crystal layer on a surface of the electro-optic crystal layer at a side opposite to the first cladding layer. The optical device further includes a second cladding layer that is laminated on a surface of the electro-optic crystal layer at a side opposite to the first cladding layer.
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