Patents by Inventor Hideaki Fukuzawa
Hideaki Fukuzawa has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).
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Publication number: 20240151919Abstract: This optical device includes at least one magnetic element including a first ferromagnetic layer, a second ferromagnetic layer, and a spacer layer sandwiched between the first ferromagnetic layer and the second ferromagnetic layer, a laser diode, and a waveguide, in which the waveguide includes at least one input waveguide optically connected to the laser diode and an output waveguide connected to the input waveguide, and at least some of light propagating in at least one of the input waveguide and the output waveguide is applied to the magnetic element.Type: ApplicationFiled: January 12, 2024Publication date: May 9, 2024Applicant: TDK CORPORATIONInventors: Tetsuya SHIBATA, Hideaki FUKUZAWA, Tomohito MIZUNO, Masahiro SHINKAI
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Publication number: 20240142787Abstract: A laser module includes a laser light source, a package in which the laser light source is housed and a light transmission window through which laser light output from the laser light source can be optically transmitted is provided on a wall portion, and an output light aperture provided inside or outside of the package and arranged in a traveling direction of the laser light to adjust an area of a passage port of the laser light.Type: ApplicationFiled: October 25, 2023Publication date: May 2, 2024Applicant: TDK CORPORATIONInventors: Hideaki FUKUZAWA, Tsuyoshi KOMAKI, Ardalan HESHMATI
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Publication number: 20240126015Abstract: This optical coupler for coupling a plurality of visible light beams having different wavelengths includes: a substrate made of a material different from lithium niobate; and an optical coupling function layer formed on a main surface of the substrate. The optical coupling function layer includes: two multimode-interference-type optical coupling parts; optical-input-side waveguides and an optical-output-side waveguide connected to one multimode-interference-type optical coupling part, and optical-input-side waveguides and an optical-output-side waveguide connected to the other multimode-interference-type optical coupling part. The multimode-interference-type optical coupling parts, the optical-input-side waveguides, and the optical-output-side waveguides are made of a lithium niobate film.Type: ApplicationFiled: October 6, 2023Publication date: April 18, 2024Applicant: TDK CORPORATIONInventors: Hajime UTSUNOMIYA, Yasuhiro TAKAGI, Hiroki HARA, Atsushi SHIMURA, Jiro YOSHINARI, Takashi KIKUKAWA, Tsuyoshi KOMAKI, Hideaki FUKUZAWA
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Patent number: 11953742Abstract: This optical device includes at least one magnetic element including a first ferromagnetic layer, a second ferromagnetic layer, and a spacer layer sandwiched between the first ferromagnetic layer and the second ferromagnetic layer, a laser diode, and a waveguide, in which the waveguide includes at least one input waveguide optically connected to the laser diode and an output waveguide connected to the input waveguide, and at least some of light propagating in at least one of the input waveguide and the output waveguide is applied to the magnetic element.Type: GrantFiled: March 14, 2022Date of Patent: April 9, 2024Assignee: TDK CORPORATIONInventors: Tetsuya Shibata, Hideaki Fukuzawa, Tomohito Mizuno, Masahiro Shinkai
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Publication number: 20240103277Abstract: This optical waveguide detection element includes a substrate, an optical waveguide layer formed on the substrate, and a photodetector. The optical waveguide layer includes a first optical waveguide in which visible light having a wavelength of 380 nm to 800 nm propagates, a second optical waveguide in which near-infrared light having a wavelength of 801 nm to 2000 nm propagates, and a third optical waveguide in which light propagates to a light receiving surface of the photodetector. A visible light output port of the first optical waveguide from which the visible light is output, a near-infrared light output port of the second optical waveguide from which the near-infrared light is output, and a reflected light input port of the third optical waveguide to which the near-infrared light is reflected and returned are arranged on one end surface of the optical waveguide layer.Type: ApplicationFiled: September 26, 2023Publication date: March 28, 2024Applicant: TDK CORPORATIONInventors: Hideaki FUKUZAWA, Tomohito MIZUNO, Tetsuya SHIBATA, Tsuyoshi KOMAKI
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Patent number: 11869989Abstract: An electrode structure includes: a metal film with an opening formed in a part of the metal film; and a transparent conductive film disposed in the opening, wherein the transparent conductive film is electronically connected to an element and overlaps with the element as viewed in a plan view in a thickness direction of the transparent conductive film.Type: GrantFiled: October 25, 2021Date of Patent: January 9, 2024Assignee: TDK CORPORATIONInventors: Tomohito Mizuno, Takekazu Yamane, Hideaki Fukuzawa, Tetsuya Shibata
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Patent number: 11821787Abstract: The light detection element includes a magnetic element and an optical waveguide. The magnetic element includes a first ferromagnetic layer, a second ferromagnetic layer, and a spacer layer sandwiched between the first ferromagnetic layer and the second ferromagnetic layer. The optical waveguide includes at least a core and a cladding covering at least a part of the core. Light that has propagated through the optical waveguide is applied to the magnetic element.Type: GrantFiled: December 12, 2022Date of Patent: November 21, 2023Assignee: TDK CORPORATIONInventors: Takeshi Nojiri, Hideaki Fukuzawa, Tetsuya Shibata, Tomohito Mizuno, Susumu Aoki
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Publication number: 20230341260Abstract: The light detection element includes a magnetic element and an optical waveguide. The magnetic element includes a first ferromagnetic layer, a second ferromagnetic layer, and a spacer layer sandwiched between the first ferromagnetic layer and the second ferromagnetic layer. The optical waveguide includes at least a core and a cladding covering at least a part of the core. Light that has propagated through the optical waveguide is applied to the magnetic element.Type: ApplicationFiled: December 12, 2022Publication date: October 26, 2023Applicant: TDK CORPORATIONInventors: Takeshi NOJIRI, Hideaki FUKUZAWA, Tetsuya SHIBATA, Tomohito MIZUNO, Susumu AOKI
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Publication number: 20230337546Abstract: A light detection element include: a magnetic element, a capacitor, and a resistor, wherein the magnetic element and the capacitor are connected in series, the resistor is connected to the magnetic element and the capacitor in parallel, the magnetic element includes a first ferromagnetic layer, a second ferromagnetic layer, and a spacer layer sandwiched between the first ferromagnetic layer and the second ferromagnetic layer, and the magnetic element is configured to be irradiated with a light containing an optical signal with a change of intensity of the light.Type: ApplicationFiled: April 12, 2023Publication date: October 19, 2023Applicant: TDK CORPORATIONInventors: Tetsuya SHIBATA, Hideaki FUKUZAWA, Tomohito MIZUNO, Arata TSUKAMOTO, Yuichi KASATANI
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Publication number: 20230333022Abstract: An analysis device includes: at least one 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; and a light source configured to emit a light, wherein the light is applied to an object to be analyzed, and the at least one magnetic element is configured to detect a reflected light reflected by the object or a transmitted light transmitted through the object.Type: ApplicationFiled: April 11, 2023Publication date: October 19, 2023Applicant: TDK CORPORATIONInventors: Hideaki FUKUZAWA, Tomohito MIZUNO, Tetsuya SHIBATA
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Publication number: 20230327773Abstract: 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.Type: ApplicationFiled: June 15, 2023Publication date: October 12, 2023Applicant: TDK CORPORATIONInventors: Hideaki FUKUZAWA, Tomohito MIZUNO, Tetsuya SHIBATA, Takashi KIKUKAWA
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Publication number: 20230304856Abstract: A receiving device includes 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 first ferromagnetic layer is configured to be irradiated with light containing an optical signal with a change of intensity of the light, and wherein the receiving device is configured to receive the optical signal on a basis of an output voltage from the magnetic element.Type: ApplicationFiled: June 5, 2023Publication date: September 28, 2023Applicant: TDK CORPORATIONInventors: Hideaki FUKUZAWA, Tomohito MIZUNO, Tetsuya SHIBATA
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Publication number: 20230304855Abstract: An optical device includes a magnetic element and a light application part, wherein the light application part configured to apply light to the magnetic element, the magnetic element includes a first ferromagnetic layer to which the light is applied, a second ferromagnetic layer, and a spacer layer sandwiched between the first ferromagnetic layer and the second ferromagnetic layer, and magnetization of the first ferromagnetic layer is inclined with respect to both an in-plane direction in which the first ferromagnetic layer extends and a surface-perpendicular direction perpendicular to a surface on which the first ferromagnetic layer extends in a state in which the light is not applied from the light application part to the magnetic element.Type: ApplicationFiled: March 27, 2023Publication date: September 28, 2023Applicant: TDK CORPORATIONInventors: Takekazu YAMANE, Tetsuya SHIBATA, Tomohito MIZUNO, Hideaki FUKUZAWA
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Publication number: 20230301196Abstract: This optical device includes a light-emitting unit that is configured to emit a light; a first magnetic element; and a circuit, wherein the first magnetic element includes a first ferromagnetic layer, a second ferromagnetic layer, and a spacer layer sandwiched between the first ferromagnetic layer and the second ferromagnetic layer, a reflected light reflected by an object to be irradiated with the light is applied to the first magnetic element, a first signal corresponding to an emission of the light from the light-emitting unit is input to the circuit, and a second signal corresponding to an application of the reflected light to the first magnetic element is input from the first magnetic element to the circuit.Type: ApplicationFiled: February 10, 2023Publication date: September 21, 2023Applicant: TDK CORPORATIONInventors: Tomohito MIZUNO, Hideaki FUKUZAWA, Tetsuya SHIBATA
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Patent number: 11722222Abstract: 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.Type: GrantFiled: October 21, 2021Date of Patent: August 8, 2023Assignee: TDK CORPORATIONInventors: Hideaki Fukuzawa, Tomohito Mizuno, Tetsuya Shibata, Takashi Kikukawa
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Publication number: 20230247913Abstract: This light detection element includes a meta-lens that includes nanostructures which are two-dimensionally arranged; and a magnetic element that includes a first ferromagnetic layer, a second ferromagnetic layer, and a spacer layer sandwiched between the first ferromagnetic layer and the second ferromagnetic layer. Light which passes through the meta-lens is applied to the magnetic element.Type: ApplicationFiled: December 6, 2022Publication date: August 3, 2023Applicant: TDK CORPORATIONInventors: Nobutaka NISHIO, Tetsuya SHIBATA, Tomohito MIZUNO, Hideaki FUKUZAWA
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Publication number: 20230229056Abstract: A light source unit (1000) of the present disclosure includes a light source part (100), a first electrical signal generating device (40-1) configured to control current that drives an optical semiconductor device (30), an optical modulator (200) having a Mach-Zehnder type optical waveguide (10) and an electrode configured to apply an electric field to the optical waveguide (10), and a second electrical signal generating device (40-2) configured to control a voltage that operates the optical modulator (200), the first electrical signal generating device (40-1) and the second electrical signal generating device (40-2) are synchronizably connected to each other, and intensity of light emitted from the optical modulator (200) is changed by the current controlled by the first electrical signal generating device (40-1) and the voltage controlled by the second electrical signal generating device (40-2).Type: ApplicationFiled: January 17, 2023Publication date: July 20, 2023Applicant: TDK CORPORATIONInventors: Hideaki FUKUZAWA, Joji OKADA, Takashi KIKUKAWA, Tsuyoshi KOMAKI
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Patent number: 11703380Abstract: A receiving device includes 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 first ferromagnetic layer is configured to be irradiated with light containing an optical signal with a change of intensity of the light, and wherein the receiving device is configured to receive the optical signal on a basis of an output voltage from the magnetic element.Type: GrantFiled: October 21, 2021Date of Patent: July 18, 2023Assignee: TDK CORPORATIONInventors: Hideaki Fukuzawa, Tomohito Mizuno, Tetsuya Shibata
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Publication number: 20230194913Abstract: The light detection element includes a light-sensitive layer configured to generate a voltage when light is applied, a first electrode, and a second electrode. The light-sensitive layer is located between the first electrode and the second electrode. The second electrode is a metal containing at least one element selected from the group consisting of ruthenium, molybdenum, and tungsten.Type: ApplicationFiled: December 1, 2022Publication date: June 22, 2023Applicant: TDK CORPORATIONInventors: Tomohito MIZUNO, Hideaki FUKUZAWA, Tetsuya SHIBATA
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Publication number: 20230097100Abstract: The optical device includes a magnetic element including a first ferromagnetic layer, a second ferromagnetic layer, and a spacer layer sandwiched between the first ferromagnetic layer and the second ferromagnetic layer, and a laser diode. At least a part of light emitted from the laser diode is applied to the magnetic element.Type: ApplicationFiled: September 7, 2022Publication date: March 30, 2023Applicant: TDK CORPORATIONInventors: Tetsuya SHIBATA, Hideaki FUKUZAWA, Tomohito MIZUNO, Masahiro SHINKAI