公开(公告)号：US20250138349A1

公开(公告)日：2025-05-01

申请号：US18883037

申请日：2024-09-12

Applicant: TDK Corporation

Inventor： Yasuhiro TAKAGI ,  Hiroki Hara ,  Atsushi Shimura ,  Jiro Yoshinari

IPC: G02F1/035 ,  G02F1/01

Abstract: A core layer of an optical element includes a second conversion portion that converts a polarization mode of light from a TE1 mode to a TE0 mode. The second conversion portion includes: a splitting portion that splits the light in the TE1 mode incident from the first conversion portion into first split light in the TE0 mode and second split light in the TE0 mode which are in opposite phases; a coupling portion that couples the first split light that has propagated through a first branch waveguide and the second split light that has propagated through a second branch waveguide to emit the light in the TE0 mode; and a phase adjustment unit that adjusts a phase difference between the first split light and the second split light. The first branch waveguide and the second branch waveguide are arranged in a second direction.

公开(公告)号：US10483458B2

公开(公告)日：2019-11-19

申请号：US15764848

申请日：2016-06-02

Applicant: TDK CORPORATION

Inventor： Junichiro Urabe ,  Tetsuya Shibata ,  Atsushi Shimura ,  Takekazu Yamane ,  Tsuyoshi Suzuki

IPC: H01L43/08 ,  H01F10/32 ,  H01L27/22 ,  H03H11/04 ,  H03H2/00 ,  H01L43/02

Abstract: A magnetoresistive effect device including a magnetoresistive effect element with which a high-frequency filter can be realized is provided. Magnetoresistive effect device includes: at least one magnetoresistive effect element including a magnetization fixed layer, spacer layer, and magnetization free layer in which magnetization direction is changeable; first and second port; signal line; and direct-current input terminal. First and second ports are connected to each other via signal line. Magnetoresistive effect element is connected to signal line and is to be connected to ground in parallel to second port. Direct-current input terminal is connected to signal line. A closed circuit including magnetoresistive effect element, signal line, ground, and direct-current input terminal is to be formed.

公开(公告)号：US10332666B2

公开(公告)日：2019-06-25

申请号：US15962286

申请日：2018-04-25

Applicant: TDK CORPORATION

Inventor： Takekazu Yamane ,  Junichiro Urabe ,  Tsuyoshi Suzuki ,  Atsushi Shimura

IPC: H01F10/32 ,  H03H11/04 ,  G11C11/02 ,  H01P1/218 ,  H03H2/00 ,  G11C11/16 ,  G11C11/15

Abstract: The magnetoresistance effect device includes: a first port; a second port; a magnetoresistance effect element; a first signal line that is connected to the first port and applies a high frequency magnetic field to the magnetoresistance effect element; a second signal line that connects the second port and the magnetoresistance effect element to each other; and a direct current application terminal capable of being connected to a power supply that applies a direct current or a direct current voltage. The first signal line includes a magnetic field generator, which extends in a first direction, at a position in the lamination direction of the magnetoresistance effect element or an in-plane direction that is orthogonal to the lamination direction, and the magnetic field generator and the magnetoresistance effect element include an overlapping portion as viewed from the lamination direction in which the magnetic field generator is disposed, or the in-plane direction.