Patents by Inventor Hideo Arimoto

Hideo Arimoto 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).

  • Publication number: 20190036295
    Abstract: An optical device includes a first substrate, having first and second surfaces, and a second substrate having a third surface. The first substrate includes: a laser unit, having an active layer and emitting light into the first substrate from the active layer; a reflecting mirror, having a plane obliquely intersecting an optical axis of light emitted from the laser unit, and being formed on the first surface so as to reflect the light toward the second surface; and a convex lens, being formed in a region on the second surface, the region including an optical axis of the light reflected by the reflecting mirror. The second substrate is provided with a grating coupler and an optical waveguide on the third surface, the optical waveguide having light incident on the grating coupler propagating therethrough.
    Type: Application
    Filed: September 28, 2018
    Publication date: January 31, 2019
    Inventors: Hideo ARIMOTO, Koichiro ADACHI, Misuzu SAGAWA, Takanori SUZUKI, Hiroyasu SASAKI
  • Patent number: 9857610
    Abstract: In an optical modulator 115 of an embodiment, an optical waveguide core 121 is configured from an n? type semiconductor region 134, a gate insulating film 136 on the n? type semiconductor region 134, and a p? type semiconductor region 137 on the gate insulating film 136. Further, a width W1 of the n? type semiconductor region 134 and a width W1 of the p? type semiconductor region 137 are equally formed and are layered without being shifted. Therefore, an optical modulator having stable optical characteristics can be provided.
    Type: Grant
    Filed: June 19, 2014
    Date of Patent: January 2, 2018
    Assignee: HITACHI, LTD.
    Inventors: Hideo Arimoto, Kazuki Tani, Takashi Takahama, Daisuke Ryuzaki, Yoshitaka Sasago
  • Publication number: 20170082877
    Abstract: In an optical modulator 115 of an embodiment, an optical waveguide core 121 is configured from an n? type semiconductor region 134, a gate insulating film 136 on the n? type semiconductor region 134, and a p? type semiconductor region 137 on the gate insulating film 136. Further, a width W1 of the n? type semiconductor region 134 and a width W1 of the p? type semiconductor region 137 are equally formed and are layered without being shifted. Therefore, an optical modulator having stable optical characteristics can be provided.
    Type: Application
    Filed: June 19, 2014
    Publication date: March 23, 2017
    Applicant: HITACHI, LTD.
    Inventors: Hideo ARIMOTO, Kazuki TANI, Takashi TAKAHAMA, Daisuke RYUZAKI, Yoshitaka SASAGO
  • Publication number: 20160111852
    Abstract: An optical device includes a first substrate, having first and second surfaces, and a second substrate having a third surface. The first substrate includes: a laser unit, having an active layer and emitting light into the first substrate from the active layer; a reflecting mirror, having a plane obliquely intersecting an optical axis of light emitted from the laser unit, and being formed on the first surface so as to reflect the light toward the second surface; and a convex lens, being formed in a region on the second surface, the region including an optical axis of the light reflected by the reflecting mirror. The second substrate is provided with a grating coupler and an optical waveguide on the third surface, the optical waveguide having light incident on the grating coupler propagating therethrough.
    Type: Application
    Filed: December 16, 2015
    Publication date: April 21, 2016
    Inventors: Hideo ARIMOTO, Koichiro ADACHI, Misuzu SAGAWA, Takanori SUZUKI, Hiroyasu SASAKI
  • Patent number: 9244231
    Abstract: An optical device includes a first substrate, having first and second surfaces, and a second substrate having a third surface. The first substrate includes: a laser unit, having an active layer and emitting light into the first substrate from the active layer; a reflecting mirror, having a plane obliquely intersecting an optical axis of light emitted from the laser unit, and being formed on the first surface so as to reflect the light toward the second surface; and a convex lens, being formed in a region on the second surface, the region including an optical axis of the light reflected by the reflecting mirror. The second substrate is provided with a grating coupler and an optical waveguide on the third surface, the optical waveguide having light incident on the grating coupler propagating therethrough.
    Type: Grant
    Filed: November 27, 2013
    Date of Patent: January 26, 2016
    Assignee: OCLARO JAPAN, INC.
    Inventors: Hideo Arimoto, Koichiro Adachi, Misuzu Sagawa, Takanori Suzuki, Hiroyasu Sasaki
  • Patent number: 9217835
    Abstract: There is provided a photoelectric conversion module that can be mounted two-dimensionally over a device board in a high-density, low-height manner and cooled efficiently with an easy-to-install collective-type radiator. In the photoelectric conversion module mounted over the device board, an optical connector is attached to that surface of an optical subassembly facing the device board. An electric connector has at least two sides thereof opened so that the optical transmission medium is threaded therethrough and extended through at least two facing sides of the optical subassembly. The optical transmission medium is thus extended between the optical subassembly and the device board in a vertically stacked manner.
    Type: Grant
    Filed: October 7, 2014
    Date of Patent: December 22, 2015
    Assignee: Hitachi Metals, Ltd.
    Inventors: Kazuo Ishiyama, Yasunobu Matsuoka, Hideo Arimoto, Norio Chujo, Yoshinori Sunaga, Kinya Yamazaki, Yoshiaki Ishigami
  • Patent number: 9164349
    Abstract: In an optical semiconductor device related to the present invention, a first light source outputting light having a first polarization, a second light source outputting light having a second polarization, a first optical modulator being optically connected to an output side of the first light source and modulating the light that is output from the first light source to output a light signal, a second optical modulator being optically connected to an output side of the second light source and modulating the light that is output from the second light source to output a light signal, and an optical multiplexer coupling the light signal that is output from the first optical modulator with the light signal that is output from the second optical modulator to output a coupled light signal, are integrated on a semiconductor substrate together.
    Type: Grant
    Filed: February 12, 2013
    Date of Patent: October 20, 2015
    Assignee: Oclaro Japan, Inc.
    Inventors: Hiroaki Hayashi, Hideo Arimoto
  • Patent number: 9110315
    Abstract: An optical device includes a ridge-like optical waveguide portion, a mesa protector portion that is arranged in parallel to the optical waveguide portion, a resin portion that covers upper parts of the mesa protector portion and is disposed at both sides of the mesa protector portion, an electrode that is disposed on the optical waveguide portion, an electrode pad that is disposed on the resin portion located at an opposite side to the optical waveguide portion with respect to the mesa protector portion, and a connection portion that is disposed on the resin portion and electrically connects the electrode to the electrode pad.
    Type: Grant
    Filed: June 5, 2012
    Date of Patent: August 18, 2015
    Assignee: Oclaro Japan, Inc.
    Inventors: Akira Nakanishi, Hideo Arimoto, Hiroaki Hayashi, Shigeki Makino, Kazunori Shinoda
  • Publication number: 20150098675
    Abstract: There is provided a photoelectric conversion module that can be mounted two-dimensionally over a device board in a high-density, low-height manner and cooled efficiently with an easy-to-install collective-type radiator. In the photoelectric conversion module mounted over the device board, an optical connector is attached to that surface of an optical subassembly facing the device board. An electric connector has at least two sides thereof opened so that the optical transmission medium is threaded therethrough and extended through at least two facing sides of the optical subassembly. The optical transmission medium is thus extended between the optical subassembly and the device board in a vertically stacked manner.
    Type: Application
    Filed: October 7, 2014
    Publication date: April 9, 2015
    Inventors: Kazuo ISHIYAMA, Yasunobu MATSUOKA, Hideo ARIMOTO, Norio CHUJO, Yoshinori SUNAGA, Kinya YAMAZAKI, Yoshiaki ISHIGAMI
  • Patent number: 8965153
    Abstract: A core of an optical waveguide and a core of a waveguide type optical device are adjacently disposed, and a layer is continuously formed at one end of the core of the waveguide type optical device, wherein an effective refractive index of the layer decreases toward a long axis direction of the optical waveguide stripe.
    Type: Grant
    Filed: December 5, 2007
    Date of Patent: February 24, 2015
    Assignee: Hitachi Ltd.
    Inventors: Makoto Takahashi, Hideo Arimoto, Kazuhiko Hosomi, Toshihiko Fukamachi, Shigeki Makino, Yasunobu Matsuoka, Toshiki Sugawara
  • Patent number: 8774571
    Abstract: An optical device includes a substrate and a first optical waveguide including a mesa. The mesa includes a first lower clad layer portion, a first core layer portion, and a first upper clad layer portion. The first lower clad layer portion, the first core layer portion, and the first upper clad layer portion are disposed in this order from the substrate side. The optical device also includes a first etch stop layer configured to stop etching when the first optical waveguide is formed. The first etch stop layer being laminated over the substrate. The first optical waveguide is laminated on the first etch stop layer.
    Type: Grant
    Filed: August 21, 2012
    Date of Patent: July 8, 2014
    Assignee: Oclaro Japan, Inc.
    Inventors: Kazunori Shinoda, Shigeki Makino, Hideo Arimoto
  • Publication number: 20140153605
    Abstract: An optical device includes a first substrate, having first and second surfaces, and a second substrate having a third surface. The first substrate includes: a laser unit, having an active layer and emitting light into the first substrate from the active layer; a reflecting mirror, having a plane obliquely intersecting an optical axis of light emitted from the laser unit, and being formed on the first surface so as to reflect the light toward the second surface; and a convex lens, being formed in a region on the second surface, the region including an optical axis of the light reflected by the reflecting mirror. The second substrate is provided with a grating coupler and an optical waveguide on the third surface, the optical waveguide having light incident on the grating coupler propagating therethrough.
    Type: Application
    Filed: November 27, 2013
    Publication date: June 5, 2014
    Applicant: Oclaro Japan, Inc.
    Inventors: Hideo ARIMOTO, Koichiro ADACHI, Misuzu SAGAWA, Takanori SUZUKI, Hiroyasu SASAKI
  • Publication number: 20130322478
    Abstract: Beams of light having wavelengths different from each other are generated in a plurality of light generation portions, the beams of light each generated in the plurality of light generation portions are reflected by a monolithic integrated mirror and are incident to a condenser lens, and emission positions on the condenser lens of the beams of light each generated in the plurality of light generation portions deviate from a central position of the condenser lens by a predetermined amount.
    Type: Application
    Filed: May 29, 2013
    Publication date: December 5, 2013
    Inventors: Koichiro ADACHI, Hideo ARIMOTO, Shigeki MAKINO, Toshiki SUGAWARA
  • Patent number: 8451872
    Abstract: A wavelength tunable filter and a wavelength tunable laser module are a codirectional coupler type whose characteristics do not vary significantly with a process error. They are structured so as to include a semiconductor substrate which has a first optical waveguide and a second optical waveguide. The first and the second optical waveguides are extended from a first side of the semiconductor substrate to an opposing second side thereof. The first optical waveguide includes a first core layer, which has a planar layout having periodic convexes and concaves, and a pair of electrodes, which vertically sandwich the first core layer. The second optical waveguide includes a second core layer, which has a lower refractive index than the first core layer. Further, a layer having the same composition and film thickness as the second core layer is placed under the first core layer.
    Type: Grant
    Filed: May 11, 2012
    Date of Patent: May 28, 2013
    Assignee: Oclaro Japan, Inc.
    Inventors: Hideo Arimoto, Masahiro Aoki
  • Publication number: 20130051725
    Abstract: An optical device includes a substrate and a first optical waveguide including a mesa. The mesa includes a first lower clad layer portion, a first core layer portion, and a first upper clad layer portion. The first lower clad layer portion, the first core layer portion, and the first upper clad layer portion are disposed in this order from the substrate side. The optical device also includes a first etch stop layer configured to stop etching when the first optical waveguide is formed. The first etch stop layer being laminated over the substrate. The first optical waveguide is laminated on the first etch stop layer.
    Type: Application
    Filed: August 21, 2012
    Publication date: February 28, 2013
    Applicant: OCLARO JAPAN, INC.
    Inventors: Kazunori SHINODA, Shigeki MAKINO, Hideo ARIMOTO
  • Publication number: 20120314725
    Abstract: An optical device includes a ridge-like optical waveguide portion, a mesa protector portion that is arranged in parallel to the optical waveguide portion, a resin portion that covers upper parts of the mesa protector portion and is disposed at both sides of the mesa protector portion, an electrode that is disposed on the optical waveguide portion, an electrode pad that is disposed on the resin portion located at an opposite side to the optical waveguide portion with respect to the mesa protector portion, and a connection portion that is disposed on the resin portion and electrically connects the electrode to the electrode pad.
    Type: Application
    Filed: June 5, 2012
    Publication date: December 13, 2012
    Applicant: OPNEXT JAPAN, INC
    Inventors: Akira NAKANISHI, Hideo ARIMOTO, Hiroaki HAYASHI, Shigeki MAKINO, Kazunori SHINODA
  • Publication number: 20120224594
    Abstract: A wavelength tunable filter and a wavelength tunable laser module are a codirectional coupler type whose characteristics do not vary significantly with a process error. They are structured so as to include a semiconductor substrate which has a first optical waveguide and a second optical waveguide. The first and the second optical waveguides are extended from a first side of the semiconductor substrate to an opposing second side thereof. The first optical waveguide includes a first core layer, which has a planar layout having periodic convexes and concaves, and a pair of electrodes, which vertically sandwich the first core layer. The second optical waveguide includes a second core layer, which has a lower refractive index than the first core layer. Further, a layer having the same composition and film thickness as the second core layer is placed under the first core layer.
    Type: Application
    Filed: May 11, 2012
    Publication date: September 6, 2012
    Applicant: OPNEXT JAPAN, INC.
    Inventors: Hideo ARIMOTO, Masahiro AOKI
  • Patent number: 8179931
    Abstract: A wavelength tunable filter and a wavelength tunable laser module are a codirectional coupler type whose characteristics do not vary significantly with a process error. They are structured so as to include a semiconductor substrate which has a first optical waveguide and a second optical waveguide. The first and the second optical waveguides are extended from a first side of the semiconductor substrate to an opposing second side thereof. The first optical waveguide includes a first core layer, which has a planar layout having periodic convexes and concaves, and a pair of electrodes, which vertically sandwich the first core layer. The second optical waveguide includes a second core layer, which has a lower refractive index than the first core layer. Further, a layer having the same composition and film thickness as the second core layer is placed under the first core layer.
    Type: Grant
    Filed: November 20, 2009
    Date of Patent: May 15, 2012
    Assignee: Opnext Japan, Inc.
    Inventors: Hideo Arimoto, Masahiro Aoki
  • Patent number: 8000359
    Abstract: A laser device capable of preventing deterioration of a light signal and a controlling method therefor are provided.
    Type: Grant
    Filed: December 11, 2008
    Date of Patent: August 16, 2011
    Assignee: Opnext Japan, Inc.
    Inventors: Hiroyasu Sasaki, Hideo Arimoto
  • Patent number: 7970041
    Abstract: A wavelength variable laser smaller in size than the conventional one can be achieved by arranging a gain chip, an etalon filter and a fifth reflective mirror on an AlN submount and longitudinally integrating the gain chip in which a 45° mirror and a lens are integrated and the etalon filter. A laser cavity has a structure in which light passes through an active layer from a first reflective mirror realized by an end surface of the gain chip, is reflected by the 45° mirror at an angle of 90° and then passes through the lens. The light having passed through the lens is converted into parallel light, passes through the etalon filter and reaches the fifth reflective mirror and is then reflected. The reflected light returns through the same optical path and reaches the first reflective mirror realized by the end surface of the gain chip.
    Type: Grant
    Filed: April 17, 2009
    Date of Patent: June 28, 2011
    Assignee: Hitachi, Ltd.
    Inventors: Hideo Arimoto, Masahiro Aoki