Patents by Inventor Takao Fukumitsu
Takao Fukumitsu 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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Patent number: 11977265Abstract: An optical element that is optically coupled to light inlet/outlet ends of an optical fiber is disposed on a base placed near the light inlet/outlet ends of the optical fiber. Moreover, a rod-like reinforcing member has an integral structure fixed into a first hole formed in the optical fiber and a second hole formed in the base 102.Type: GrantFiled: November 13, 2019Date of Patent: May 7, 2024Assignee: Nippon Telegraph and Telephone CorporationInventors: Takuya Tanaka, Makoto Abe, Kota Shikama, Takao Fukumitsu, Norio Sato, Atsushi Aratake
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Patent number: 11934022Abstract: A photoelectric fiber includes a fiber including a core through which light is guided; an electrical unit formed continuously with the fiber, the electrical unit being configured to house a photoelectric conversion chip including a photoelectric conversion element; and an external electrode formed on a front surface of at least one of the fiber or the electrical unit, wherein the photoelectric conversion chip is optically connected to the core and electrically connected to the external electrode.Type: GrantFiled: July 18, 2019Date of Patent: March 19, 2024Assignee: Nippon Telegraph and Telephone CorporationInventors: Norio Sato, Atsushi Aratake, Makoto Abe, Takuya Tanaka, Kota Shikama, Takao Fukumitsu, Hiroshi Ishikawa
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Publication number: 20220357534Abstract: An optical element that is optically coupled to light inlet/outlet ends of an optical fiber is disposed on a base placed near the light inlet/outlet ends of the optical fiber. Moreover, a rod-like reinforcing member has an integral structure fixed into a first hole formed in the optical fiber and a second hole formed in the base 102.Type: ApplicationFiled: November 13, 2019Publication date: November 10, 2022Inventors: Takuya Tanaka, Makoto Abe, Kota Shikama, Takao Fukumitsu, Norio Sato, Atsushi Aratake
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Publication number: 20220269020Abstract: A photoelectric fiber includes a fiber including a core through which light is guided; an electrical unit formed continuously with the fiber, the electrical unit being configured to house a photoelectric conversion chip including a photoelectric conversion element; and an external electrode formed on a front surface of at least one of the fiber or the electrical unit, wherein the photoelectric conversion chip is optically connected to the core and electrically connected to the external electrode.Type: ApplicationFiled: July 18, 2019Publication date: August 25, 2022Inventors: Norio Sato, Atsushi Aratake, Makoto Abe, Takuya Tanaka, Kota Shikama, Takao Fukumitsu, Hiroshi Ishikawa
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Patent number: 9036958Abstract: In an optical component, a part of a waveguide type optical device is fixed to a convex portion of a mount. The optical component includes an optical device support base, a pressure member and a pressure support base. The optical device support base is interposed between the mount and the presser member enough to be slidable in a direction parallel to surfaces of the mount and the presser member.Type: GrantFiled: March 9, 2011Date of Patent: May 19, 2015Assignees: NIPPON TELEGRAPH AND TELEPHONE CORPORATION, NTT ELECTRONICS CORPORATIONInventors: Motohaya Ishii, Naoki Ooba, Kazunori Seno, Yoshiyuki Doi, Ken Tsuzuki, Takao Fukumitsu, Atsushi Murasawa, Fumihiro Ebisawa, Hiroshi Terui, Tomoyo Shibazaki, Yuichi Kikuchi
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Patent number: 8721191Abstract: In an optical component configured to fix to a mount an optical device chip in which waveguide type optical devices having different thermal expansion coefficients are butt-jointed, deterioration in reliability due to thermal stress is suppressed. The optical component (300) comprises an optical device chip (310) including an LN waveguide (311), a first PLC waveguide (312), a second PLC waveguide (313), and a fiber alignment member (314), a mount (320), and optical fibers (330). Each of connection faces between the first PLC waveguide and the fiber alignment member is configured as an tilted structure, and each of connection faces between the LN waveguide, and the first and second PLC waveguides is configured as a right-angled structure. In the right-angled structure, the connection faces are connected by an adhesive having a lower Young's modulus than that of an adhesive used on the connection faces of the tilted structure.Type: GrantFiled: August 2, 2011Date of Patent: May 13, 2014Assignees: Nippon Telegraph and Telephone Corporation, NTT Electronics CorporationInventors: Motohaya Ishii, Takashi Yamada, Yoshiyuki Doi, Takashi Saida, Ken Tsuzuki, Takashi Goh, Hiroshi Yamazaki, Shinji Mino, Takao Fukumitsu, Atsushi Murasawa, Fumihiro Ebisawa, Hiroshi Terui, Tomoyo Shibazaki, Yuichi Kikuchi
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Publication number: 20130136393Abstract: In an optical component configured to fix to a mount an optical device chip in which a plurality of waveguide type optical devices having different thermal expansion coefficients are butt-jointed, deterioration in reliability due to thermal stress is suppressed. The optical component (300) comprises an optical device chip (310) including an LN waveguide (311), a first PLC waveguide (312) connected to an end of the LN waveguide (311), a second PLC waveguide (313) connected to the other end of the LN waveguide (311), and a fiber alignment member (314) connected to the first PLC waveguide (312), a mount (320) on which the optical device chip (310) is mounted, and optical fibers (330) aligned to the fiber alignment member (314).Type: ApplicationFiled: August 2, 2011Publication date: May 30, 2013Applicants: NTT ELECTRONICS CORPORATION, NIPPON TELEGRAPH AND TELEPHONE CORPORATIONInventors: Motohaya Ishii, Takashi Yamada, Yoshiyuki Doi, Takashi Saida, Ken Tsuzuki, Takashi Goh, Hiroshi Yamazaki, Shinji Mino, Takao Fukumitsu, Atsushi Murasawa, Fumihiro Ebisawa, Hiroshi Terui, Tomoyo Shibazaki, Yuichi Kikuchi
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Publication number: 20130011095Abstract: In an optical component, a part of a waveguide type optical device is fixed to a convex portion of a mount. The optical component includes an optical support base, a pressure member and a pressure support base. The optical device support base is interposed between the mount and the presser member enough to be slidable in a direction parallel to surfaces of the mount and the presser member.Type: ApplicationFiled: March 9, 2011Publication date: January 10, 2013Applicants: NTT ELECTRONICS CORPORATION, NIPPON TELEGRAPH AND TELEPHONE CORPORATIONInventors: Motohaya Ishii, Naoki Ooba, Kazunori Seno, Yoshiyuki Doi, Ken Tsuzuki, Takao Fukumitsu, Atsushi Murasawa, Fumihiro Ebisawa, Hiroshi Terui, Tomoyo Shibazaki, Yuichi Kikuchi