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公开(公告)号：US20200271963A1
公开(公告)日：2020-08-27
申请号：US16799753
申请日：2020-02-24
发明人： Shinji Iwatsuka , Kenji Endou , Hiroki Hara , Toshinori Matsuura , Takashi Kikukawa , Yasuhiro Ohmori , Masaharu Doi , Shintaro Takeuchi , Takehito Tanaka , Yoshinobu Kubota
摘要： 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.
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公开(公告)号：US11003044B2
公开(公告)日：2021-05-11
申请号：US16799770
申请日：2020-02-24
发明人： Hiroki Hara , Shinji Iwatsuka , Takashi Kikukawa , Toshinori Matsuura , Yasuhiro Ohmori , Masaharu Doi , Shintaro Takeuchi , Yoshinobu Kubota
摘要： An electro-optic device is provided with a Mach-Zehnder optical waveguide including at least one linear section and at least one curved section and a differential RF signal electrode provided along the Mach-Zehnder optical waveguide. Optical input/output ports of the Mach-Zehnder optical waveguide are provided at one end side in a first direction in which the linear section extends. The differential RF signal electrode is provided in both the linear and curved sections.
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公开(公告)号：US11003043B2
公开(公告)日：2021-05-11
申请号：US16799763
申请日：2020-02-24
发明人： Yasuhiro Ohmori , Masaharu Doi , Shintaro Takeuchi , Takehito Tanaka , Yoshinobu Kubota , Shinji Iwatsuka , Kenji Endou , Hiroki Hara , Toshinori Matsuura , Takashi Kikukawa
摘要： An optical modulator is provided with a ridge-shaped optical waveguide formed of a dielectric thin film having electro-optic effect, a buffer layer covering the optical waveguide, a signal electrode formed on the buffer layer so as to be opposed to the optical waveguide through the buffer layer; a ground electrode formed on the buffer layer together with the signal electrode, and a dielectric film having a higher dielectric constant than air and covering at least a part of exposed surfaces of the signal electrode and ground electrode and exposed surfaces of the buffer layer.
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公开(公告)号：US10989980B2
公开(公告)日：2021-04-27
申请号：US16799753
申请日：2020-02-24
发明人： Shinji Iwatsuka , Kenji Endou , Hiroki Hara , Toshinori Matsuura , Takashi Kikukawa , Yasuhiro Ohmori , Masaharu Doi , Shintaro Takeuchi , Takehito Tanaka , Yoshinobu Kubota
摘要： 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.
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公开(公告)号：US10921522B2
公开(公告)日：2021-02-16
申请号：US16497001
申请日：2018-02-20
申请人： TDK Corporation
发明人： Hiroki Hara , Masahiro Shinkai , Takashi Kikukawa , Masami Sasaki , Ryohei Fukuzaki , Motohiro Nakahara , Tetsuo Miya , Shuji Tachi , Koichi Arishima
摘要： A first disclosure is an optical fiber member equipped with two holding members that hold an optical fiber such that an end surface of the optical fiber is located on one end and a curving portion having a coat of the optical fiber is curved to be extended at another end; the holding members are provided with holding flat portions that sandwich an end portion of the optical fiber where the coat is removed such that the end surface of the optical fiber is located on the one end; at least any of the holding flat portions has an aligning groove to fix a position of the end portion of the optical fiber; the holding member is provided with a curved surface at a position adjacent to the curving portion in the extending direction D1; and the two holding members are equal in thermal expansion coefficient.
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公开(公告)号：US10799863B2
公开(公告)日：2020-10-13
申请号：US16087794
申请日：2017-03-24
申请人： TDK CORPORATION
IPC分类号： G01N33/44 , B01L3/00 , B82Y25/00 , G01N15/06 , G01N27/72 , G01N27/74 , G01R33/09 , G01R33/12 , C12Q1/6825 , G01N33/543 , G01N27/00 , G01N15/00
摘要： A chemical sensor that enables high detection accuracy. A chemical sensor includes a substrate, a magnetoresistance-effect element disposed over the substrate, a first film disposed over the magnetoresistance-effect element, and a second film disposed in a region in the vicinity of the magnetoresistance-effect element or over a region in the vicinity of the magnetoresistance-effect element, wherein the second film has higher solubility in a specific liquid than the first film.
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公开(公告)号：US11722222B2
公开(公告)日：2023-08-08
申请号：US17507143
申请日：2021-10-21
申请人： TDK CORPORATION
IPC分类号： H04B10/40 , H04B10/50 , H04B10/532
CPC分类号： H04B10/503 , H04B10/40 , H04B10/532
摘要： 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.
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公开(公告)号：US10948395B2
公开(公告)日：2021-03-16
申请号：US16089122
申请日：2017-03-24
申请人： TDK CORPORATION
IPC分类号： G01N15/06 , G01N33/543 , G01N27/74 , G01N15/00
摘要： What provided is a biosensor including: a substrate having a surface with first and second regions adjacent each other; a magnetoresistance effect element disposed on the first region; a soft magnetic thin film on the second region; a protective film disposed on both the first region and the second region, covering a surface of the soft magnetic thin film, and disposed on the top part of the second region and contains an affinity substance recognizing the biomolecule on the outer surface of the second region exclusively; and an MR cover film disposed on at least the top part of the first region, disposed on the protective film above the magnetoresistance effect element, and being free of the affinity substance, wherein the soft magnetic thin film transmits an in-plane component of a stray magnetic field of magnetic beads to the magnetoresistance effect element.
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公开(公告)号：US10801993B2
公开(公告)日：2020-10-13
申请号：US16087833
申请日：2017-03-24
申请人： TDK CORPORATION
IPC分类号： G01N27/72 , C12Q1/6816 , G01N27/74 , C12Q1/6825 , G01N33/543
摘要： A chemical sensor that enables high detection accuracy that includes a soft-magnetic-material film, a magnetoresistance-effect element, a first film disposed over the soft-magnetic-material film, and a second film disposed over the magnetoresistance-effect element, wherein, when viewed from a direction perpendicular to the film surface of the soft-magnetic-material film, the soft-magnetic-material film is disposed at least partially so as not to overlap the magnetoresistance-effect element; when viewed from the direction perpendicular to the film surface of the soft-magnetic-material film, the magnetoresistance-effect element is disposed at least partially so as not to overlap the soft-magnetic-material film; and the second film has higher solubility in a specific liquid than the first film.
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公开(公告)号：US10799864B2
公开(公告)日：2020-10-13
申请号：US16087836
申请日：2017-03-24
申请人： TDK CORPORATION
IPC分类号： B01L3/00 , B82Y25/00 , G01N15/06 , G01N27/72 , G01N27/74 , G01R33/09 , G01R33/12 , C12Q1/6825 , G01N33/543 , G01N27/00 , G01N15/00
摘要： 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.
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