公开(公告)号：US20230112992A1

公开(公告)日：2023-04-13

申请号：US18062733

申请日：2022-12-07

Applicant: NGK Insulators, Ltd.

Inventor： Jungo KONDO ,  Makoto IWAI ,  Keiichiro ASAI ,  Tomoyoshi TAI ,  Kentaro TANI

IPC: G02F1/025 ,  G02F1/225

Abstract: Provided is a photonic crystal element, which shows small delay of an electric signal, shows a small propagation loss, and has uniform characteristics over its entirety. The photonic crystal element includes a two-dimensional photonic crystal slab having holes periodically formed in a substrate made of a ceramics material, the photonic crystal element being configured to guide an electromagnetic wave having a frequency of 30 GHz or more and 20 THz or less.

公开(公告)号：US20250158263A1

公开(公告)日：2025-05-15

申请号：US19023830

申请日：2025-01-16

Applicant: NGK INSULATORS, LTD.

Inventor： Kentaro TANI ,  Jungo KONDO

IPC: H01P3/00

Abstract: A waveguide device is configured to guide an electromagnetic wave having a frequency of 30 GHz or more and 20 THz or less. The waveguide device includes: a resin material substrate; a conductor layer provided on the resin material substrate; and a support substrate positioned on a side opposite from the conductor layer with respect to the resin material substrate. The resin material substrate and the support substrate are directly joined to each other.

公开(公告)号：US20240186672A1

公开(公告)日：2024-06-06

申请号：US18408774

申请日：2024-01-10

Applicant: NGK INSULATORS, LTD.

Inventor： Kentaro TANI ,  Jungo KONDO

IPC: H01P3/16 ,  H01P3/00

CPC classification number: H01P3/16 ,  H01P3/003

Abstract: A waveguide device includes: a line substrate having holes periodically formed in a semiconductor substrate; a waveguide configured to propagate an electromagnetic wave while confining the electromagnetic wave therein with the holes; a low-dielectric constant portion having a dielectric constant smaller than a dielectric constant of the line substrate, the low-dielectric constant portion overlapping the waveguide in a thickness direction of the line substrate; and a support substrate arranged below the line substrate, the support substrate being configured to support the line substrate. The waveguide device is configured to guide an electromagnetic wave having a frequency of 30 GHz or more and 20 THz or less.

公开(公告)号：US20240178539A1

公开(公告)日：2024-05-30

申请号：US18433534

申请日：2024-02-06

Applicant: NGK INSULATORS, LTD.

Inventor： Kentaro TANI ,  Naotake OKADA ,  Jungo KONDO

IPC: H01P3/00 ,  H01P11/00

CPC classification number: H01P3/006 ,  H01P11/003

Abstract: A waveguide device includes: an inorganic material substrate; a conductor layer including a signal electrode and first earth electrodes; a support substrate positioned on an opposite side to the conductor layer with respect to the inorganic material substrate; a second earth electrode positioned between the inorganic material substrate and the support substrate; and a third earth electrode positioned on an opposite side to the second earth electrode with respect to the support substrate. The first earth electrodes, the second earth electrode, and the third earth electrode are electrically connected to each other. A thickness “t” of the inorganic material substrate satisfies the following formula (1).







t

公开(公告)号：US20240162592A1

公开(公告)日：2024-05-16

申请号：US18422061

申请日：2024-01-25

Applicant: NGK INSULATORS, LTD.

Inventor： Kentaro TANI ,  Jungo KONDO

IPC: H01P3/16

CPC classification number: H01P3/16

Abstract: A waveguide device includes: a waveguide member capable of guiding an electromagnetic wave having a frequency of 30 GHz or more and 20 THz or less; a support substrate configured to support the waveguide member; and a low-dielectric constant portion. The waveguide member includes: an inorganic material substrate; and coplanar electrodes arranged above the inorganic material substrate. The support substrate is arranged below the inorganic material substrate. The low-dielectric constant portion is arranged below the inorganic material substrate, and has a dielectric constant smaller than a dielectric constant of the inorganic material substrate.

公开(公告)号：US20230411818A1

公开(公告)日：2023-12-21

申请号：US18461663

申请日：2023-09-06

Applicant: NGK INSULATORS, LTD.

Inventor： Jungo KONDO ,  Kentaro TANI ,  Keiichiro ASAI ,  Naotake OKADA

IPC: H01P3/16

CPC classification number: H01P3/16

Abstract: The waveguide element includes: a dielectric portion having holes periodically formed in a substrate made of a ceramics material; a low-dielectric constant portion having a dielectric constant smaller than a dielectric constant of the dielectric portion; and a support substrate arranged below the dielectric portion, the support substrate being configured to support the dielectric portion. The waveguide element is configured to guide an electromagnetic wave having a frequency of 30 GHz or more and 20 THz or less, and a frequency range of the electromagnetic wave in which an absolute value of a propagation loss becomes 1 dB/cm or less is 50 GHz or more.

公开(公告)号：US20240337898A1

公开(公告)日：2024-10-10

申请号：US18739443

申请日：2024-06-11

Applicant: NGK INSULATORS, LTD.

Inventor： Kentaro TANI ,  Jungo KONDO ,  Tetsuya EJIRI ,  Shoichiro YAMAGUCHI

IPC: G02F1/35 ,  G02F1/355 ,  G02F1/377 ,  G02F1/39

CPC classification number: G02F1/353 ,  G02F1/3551 ,  G02F1/3775 ,  G02F1/395 ,  G02F2202/32

Abstract: A wavelength conversion device includes: a dielectric substrate having holes periodically formed in a non-linear optical crystal substrate; a line-defect optical waveguide formed in the dielectric substrate; and a periodically poled portion provided in the optical waveguide. The wavelength conversion device is configured to convert a wavelength of light traveling through the optical waveguide.

公开(公告)号：US20240213644A1

公开(公告)日：2024-06-27

申请号：US18433548

申请日：2024-02-06

Applicant: NGK INSULATORS, LTD.

Inventor： Kentaro TANI ,  Jungo KONDO

IPC: H01P3/08

CPC classification number: H01P3/08

Abstract: A waveguide element includes a waveguide member capable of guiding an electromagnetic wave having a frequency of 30 GHz or more and 20 THz or less. The waveguide member includes: an inorganic material substrate; and a conductor layer arranged above the inorganic material substrate. A thickness “t” of the inorganic material substrate satisfies the following expression (1):







t

公开(公告)号：US20240142852A1

公开(公告)日：2024-05-02

申请号：US18411196

申请日：2024-01-12

Applicant: NGK INSULATORS, LTD.

Inventor： Kentaro TANI ,  Jungo KONDO ,  Keiichiro ASAI ,  Shuhei HIGASHIHARA ,  Naoki FUJITA

IPC: G02F1/313

CPC classification number: G02F1/313

Abstract: A waveguide device includes: a photonic crystal layer having holes periodically formed in an electro-optical crystal substrate; a line-defect optical waveguide formed in the photonic crystal layer; a first electrode arranged above the electro-optical crystal substrate, the first electrode being transparent to light; and a second electrode arranged below the electro-optical crystal substrate. Each of an optical scanning device and an optical modulation device includes the above-mentioned waveguide device.

公开(公告)号：US20240125986A1

公开(公告)日：2024-04-18

申请号：US18536342

申请日：2023-12-12

Applicant: NGK INSULATORS, LTD.

Inventor： Kentaro TANI ,  Jungo KONDO ,  Masahiko NAMERIKAWA ,  Yoshio KIKUCHI

IPC: G02B5/18 ,  G01N21/3581

CPC classification number: G02B5/1861 ,  G01N21/3581

Abstract: A member for terahertz equipment includes: a substrate main body having a first principal surface and a second principal surface; and a reflection suppressing portion provided on at least one of the first principal surface or the second principal surface of the substrate main body. The reflection suppressing portion includes a plurality of protrusions which are arranged in a grating shape, and each have a tapered portion in a vertical cross section.