公开(公告)号：US10799864B2

公开(公告)日：2020-10-13

申请号：US16087836

申请日：2017-03-24

Applicant: TDK CORPORATION

Inventor： Sachio Tsuboike ,  Susumu Haratani ,  Sumiko Kitagawa ,  Takashi Kikukawa ,  Haruki Yuga

IPC: B01L3/00 ,  B82Y25/00 ,  G01N15/06 ,  G01N27/72 ,  G01N27/74 ,  G01R33/09 ,  G01R33/12 ,  C12Q1/6825 ,  G01N33/543 ,  G01N27/00 ,  G01N15/00

Abstract: To provide a chemical sensor that enables high detection accuracy. A chemical sensor includes a substrate, two or more magnetoresistance-effect elements disposed side by side in a substrate in-plane direction over the substrate, a first film disposed over a region between the magnetoresistance-effect elements adjacent to each other, and a second film disposed over the magnetoresistance-effect elements, wherein the second film has higher solubility in a specific liquid than the first film.

公开(公告)号：US12191909B2

公开(公告)日：2025-01-07

申请号：US17409171

申请日：2021-08-23

Applicant: TDK CORPORATION

Inventor： Hideaki Fukuzawa ,  Takashi Kikukawa ,  Masahiro Shinkai ,  Hiroki Hara

IPC: H04B10/50 ,  H04B10/116 ,  H04B10/516

Abstract: A transmission device of the present disclosure is a transmission device that transmits a visible light signal to a receiving device, and includes a laser light source configured to emit visible light, and an optical modulator configured to change intensity of the visible light and generate a visible light signal, in which the optical modulator has an optical waveguide that serves as a transmission path for the visible light, and the optical waveguide is formed of a material containing lithium niobate.

公开(公告)号：US12107631B2

公开(公告)日：2024-10-01

申请号：US18210333

申请日：2023-06-15

Applicant: TDK CORPORATION

Inventor： Hideaki Fukuzawa ,  Tomohito Mizuno ,  Tetsuya Shibata ,  Takashi Kikukawa

IPC: H04B10/40 ,  H04B10/50 ,  H04B10/532

CPC classification number: H04B10/503 ,  H04B10/40 ,  H04B10/532

Abstract: A transceiver device includes: a receiving device including a magnetic element having a first ferromagnetic layer, a second ferromagnetic layer, and a spacer layer sandwiched between the first ferromagnetic layer and the second ferromagnetic layer, wherein the receiving device is configured to receive an optical signal; a transmission device including a modulated light output element, wherein the transmission device is configured to transmit an optical signal; and a circuit chip including an integrated circuit electrically connected to the magnetic element and the modulated light output element.

公开(公告)号：US12068784B2

公开(公告)日：2024-08-20

申请号：US18210333

申请日：2023-06-15

Applicant: TDK CORPORATION

Inventor： Hideaki Fukuzawa ,  Tomohito Mizuno ,  Tetsuya Shibata ,  Takashi Kikukawa

IPC: H04B10/40 ,  H04B10/50 ,  H04B10/532

CPC classification number: H04B10/503 ,  H04B10/40 ,  H04B10/532

Abstract: A transceiver device includes: a receiving device including a magnetic element having a first ferromagnetic layer, a second ferromagnetic layer, and a spacer layer sandwiched between the first ferromagnetic layer and the second ferromagnetic layer, wherein the receiving device is configured to receive an optical signal; a transmission device including a modulated light output element, wherein the transmission device is configured to transmit an optical signal; and a circuit chip including an integrated circuit electrically connected to the magnetic element and the modulated light output element.

公开(公告)号：US10989980B2

公开(公告)日：2021-04-27

申请号：US16799753

申请日：2020-02-24

Applicant: TDK Corporation ,  FUJITSU OPTICAL COMPONENTS LIMITED

Inventor： Shinji Iwatsuka ,  Kenji Endou ,  Hiroki Hara ,  Toshinori Matsuura ,  Takashi Kikukawa ,  Yasuhiro Ohmori ,  Masaharu Doi ,  Shintaro Takeuchi ,  Takehito Tanaka ,  Yoshinobu Kubota

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

Abstract: An optical modulator is provided with a substrate, first and second optical waveguides each formed of a ridge-shaped electro-optic material film and disposed so as to be mutually adjacent on the substrate, a buffer layer covering upper surfaces of the first and second optical waveguides, first and second signal electrodes provided above the buffer layer so as to be opposed respectively to the first and second optical waveguides, and a dielectric layer covering at least one of a part of an exposed surface of the first signal electrode and a part of an exposed surface of the second signal electrode, and a part of an upper surface of the buffer layer. Differential signals are applied to the first and second signal electrodes.