公开(公告)号：US20240264506A1

公开(公告)日：2024-08-08

申请号：US18394665

申请日：2023-12-22

Applicant: FUJITSU OPTICAL COMPONENTS LIMITED

Inventor： NOBUAKI MITAMURA

IPC: G02F1/21 ,  G02F1/225

CPC classification number: G02F1/212 ,  G02F1/2255 ,  H04B10/40

Abstract: An optical device includes a substrate having an optical waveguide formed on a substrate surface, a buffer layer that is laminated on the optical waveguide, an electrode that is formed on the buffer layer, an insulating layer that covers the electrode, and an adhesion layer that is formed between the electrode and the insulating layer.

公开(公告)号：US20220373828A1

公开(公告)日：2022-11-24

申请号：US17699746

申请日：2022-03-21

Applicant: Fujitsu Optical Components Limited

Inventor： YOSHIHIKO YOSHIDA ,  NOBUAKI MITAMURA ,  Shuntaro Makino ,  Yoshinobu Kubota

IPC: G02F1/035 ,  G02F1/03

Abstract: An optical device includes a silicon substrate, a waveguide formed of a thin film that is laminated on the silicon substrate and that is made of a perovskite oxide with a large electro-optic effect as compared to lithium niobate, and a cladding layer that covers the waveguide. Further, the optical device includes ground electrode that has a ground potential and a signal electrode that is arranged at a position facing the ground electrode and that applies driving voltage to the waveguide.

公开(公告)号：US20220004032A1

公开(公告)日：2022-01-06

申请号：US17332292

申请日：2021-05-27

Applicant: Fujitsu Optical Components Limited

Inventor： NOBUAKI MITAMURA

IPC: G02F1/065 ,  G02F1/1337

Abstract: A multilayer film includes a single-crystal silicon layer, a first layer containing Zr, a second layer containing ZrO2, and a third layer containing a perovskite oxide having an electrooptic effect. The first layer, the second layer, and the third layer are provided in this order above the single-crystal silicon layer, and the multilayer film is transparent to a wavelength to be used.

公开(公告)号：US20240159978A1

公开(公告)日：2024-05-16

申请号：US18482126

申请日：2023-10-06

Applicant: FUJITSU OPTICAL COMPONENTS LIMITED

Inventor： NOBUAKI MITAMURA ,  Yohei YAMASHITA ,  Yurika YANADA

IPC: G02B6/42

CPC classification number: G02B6/4251 ,  G02B6/4213 ,  G02B6/4257 ,  G02B6/4283

Abstract: An optical integrated circuit module includes an optical integrated circuit element that includes as optical waveguide that is made by using an organic electro-optical material, and a cover that seals, as vacuum sealing, at least the optical waveguide that is disposed on the optical integrated circuit element. In addition, the optical integrated circuit module includes an oxygen getter that is provided in an inner part of the cover and that absorbs oxygen contained in the inner part of the cover.

公开(公告)号：US20250147377A1

公开(公告)日：2025-05-08

申请号：US18905790

申请日：2024-10-03

Applicant: FUJITSU OPTICAL COMPONENTS LIMITED

Inventor： NOBUAKI MITAMURA ,  Kazumasa SATO

IPC: G02F1/21 ,  G02F1/01 ,  G02F1/225 ,  H04B10/516

Abstract: An optical modulator element includes, on a substrate, an optical branching portion and an optical multiplexing portion each of which includes a first material, two optical waveguide arms each of which connects the optical branching portion and the optical multiplexing portion, and electrodes that apply an electrical signal to the two optical waveguide arms waveguide. Each optical waveguides of the two optical waveguide arms includes a first optical waveguide that includes the first material, a second optical waveguide that includes a second material that has a higher electro-optical effect than the first material, and a transition portion that performs an optical transition between the first optical waveguide and the second optical waveguide. The substrate includes a hollow portion in which all or a part of the substrate located below the second optical waveguide in a plan view has been removed.

公开(公告)号：US20210072569A1

公开(公告)日：2021-03-11

申请号：US16944591

申请日：2020-07-31

Applicant: Fujitsu Optical Components Limited

Inventor： NOBUAKI MITAMURA

IPC: G02F1/065 ,  G02F1/03

Abstract: An optical modulation device includes a substrate, a slot waveguide formed by arranging a pair of electrodes in a groove formed on one side of the substrate and by filling the groove with an electro-optical material, a dielectric film that covers a surface of the electro-optic material filled in the slot waveguide, and a plate member that covers the slot waveguide and is bonded to the dielectric film with an adhesive resin.

公开(公告)号：US20170153458A1

公开(公告)日：2017-06-01

申请号：US15358553

申请日：2016-11-22

Applicant: Fujitsu Optical Components Limited

Inventor： NOBUAKI MITAMURA

IPC: G02B27/10 ,  G02B5/26 ,  G02B6/42 ,  H01S5/0683

CPC classification number: G02B27/1006 ,  G02B5/26 ,  G02B6/29365 ,  G02B6/4215 ,  G02B6/4286 ,  H01S5/005 ,  H01S5/0078 ,  H01S5/02284 ,  H01S5/0683 ,  H01S5/4012 ,  H01S5/4087

Abstract: The filter transmits a light beam of a second wavelength emitted from each of a plurality of second light sources, reflects other light beams incident from a direction intersecting a traveling direction of the light beam of the second wavelength, and outputs a combined light of the light beam of the second wavelength and the other light beams. The first optical element transmits part of the light beam of the first wavelength emitted from the first light source or part of the light beam of the second wavelength included in the combined light output from the filter, and reflects the other light beams excluding the part thereof in the direction intersecting the traveling direction. The first light receiving element receives the part of the light beam of the first wavelength transmitted by the first optical element or the part of the light beam of the second wavelength.