Patents by Inventor Jaegyu PARK

Jaegyu PARK 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: 20220180111
    Abstract: Disclosed is an air screen detector device. The air screen detector device includes a display for displaying an air screen image in one direction by using visible light, an infrared light source disposed on the display to provide infrared light in the same direction as that of the visible light, an infrared image sensor disposed on one side of the display and the infrared light source to receive the infrared light reflected by a finger provided in the air screen image disposed on the other side of the infrared light source, a first multifocal lens disposed between the infrared image sensor and the infrared light source to provide the infrared light to the infrared image sensor, and a visible light filter disposed between the first multifocal lens and the infrared image sensor to remove the visible light.
    Type: Application
    Filed: October 21, 2021
    Publication date: June 9, 2022
    Applicant: ELECTRONICS AND TELECOMMUNICATIONS RESEARCH INSTITUTE
    Inventors: Sang-Pil HAN, Jaegyu PARK, Sungil KIM, Minhyup SONG
  • Publication number: 20220163864
    Abstract: Disclosed is an electro-optic modulator.
    Type: Application
    Filed: September 24, 2021
    Publication date: May 26, 2022
    Applicant: ELECTRONICS AND TELECOMMUNICATIONS RESEARCH INSTITUTE
    Inventors: Jaegyu PARK, Sang-Pil HAN, Sungil KIM, Minhyup SONG
  • Patent number: 11226451
    Abstract: A 3D optical switch for transferring an optical signal between a plurality of layers of an optical integrated circuit, which comprises: a first optical coupler for distributing the optical signal input to a first optical waveguide deployed in a first layer among the plurality of layers to a second optical waveguide deployed in a second layer different from the first layer; a phase shifter for changing a phase of a first optical signal in the first optical waveguide passing through the first optical coupler and a phase of a second optical signal in the second optical waveguide distributed by the first optical coupler; and a second optical coupler for combining the first optical signal of which the phase is changed and the second optical signal of which the phase is changed is provided.
    Type: Grant
    Filed: January 23, 2020
    Date of Patent: January 18, 2022
    Assignee: Electronics and Telecommunications Research Institute
    Inventors: Jaegyu Park, Gyung Ock Kim, Jiho Joo
  • Publication number: 20210328681
    Abstract: Disclosed is a multi-channel optical signal generating apparatus, which includes a CW laser that generates a single optical signal, an optical signal processor unit that processes the single optical signal, an oscillator that generates an electrical signal, and an electrical signal processor unit that generates a modulation signal, based on the electrical signal, and the optical signal processor unit includes ‘n’ optical circulators, at least one optical intensity modulator, (m-1) optical phase modulators, and ‘n’ BiODLs, the electrical signal processor unit includes a RF power divider which divides the electrical signal, and ‘m’ RF power amplifiers, the RF power divider divides the electrical signal into ‘m’ divided electrical signals, and the optical signal processor unit modulates and outputs the single optical signal by the at least one optical intensity modulator and the (m-1) optical phase modulators, based on the ‘m’ divided electrical signals divided from the RF power divider.
    Type: Application
    Filed: March 31, 2021
    Publication date: October 21, 2021
    Applicant: ELECTRONICS AND TELECOMMUNICATIONS RESEARCH INSTITUTE
    Inventors: Sang-Pil Han, Sungil Kim, Jaegyu Park, Minhyup Song
  • Patent number: 10859765
    Abstract: Provided are an optical coupling device and a method for manufacturing the same. The optical coupling device includes a first waveguide including a first forward tapered part, a second waveguide disposed on the first waveguide and including a first reverse tapered part in a direction opposite to the first forward tapered part, and an interlayer waveguide disposed between the first and second waveguides and having a thickness corresponding to a distance between the first forward tapered part and the first reverse tapered part.
    Type: Grant
    Filed: November 7, 2018
    Date of Patent: December 8, 2020
    Assignee: ELECTRONICS AND TELECOMMUNICATIONS RESEARCH INSTITUTE
    Inventors: Jaegyu Park, Gyungock Kim, Jiho Joo
  • Publication number: 20200241209
    Abstract: A 3D optical switch for transferring an optical signal between a plurality of layers of an optical integrated circuit, which comprises: a first optical coupler for distributing the optical signal input to a first optical waveguide deployed in a first layer among the plurality of layers to a second optical waveguide deployed in a second layer different from the first layer; a phase shifter for changing a phase of a first optical signal in the first optical waveguide passing through the first optical coupler and a phase of a second optical signal in the second optical waveguide distributed by the first optical coupler; and a second optical coupler for combining the first optical signal of which the phase is changed and the second optical signal of which the phase is changed is provided.
    Type: Application
    Filed: January 23, 2020
    Publication date: July 30, 2020
    Applicant: ELECTRONICS AND TELECOMMUNICATIONS RESEARCH INSTITUTE
    Inventors: Jaegyu PARK, Gyung Ock KIM, Jiho JOO
  • Patent number: 10466413
    Abstract: Disclosed are an optical input/output device and an opto-electronic system including the same. The device includes a bulk silicon substrate, at least one vertical-input light detection element monolithically integrated on a portion of the bulk silicon substrate, and at least one vertical-output light source element monolithically integrated on another portion of the bulk silicon substrate adjacent to the vertical-input light detection element. The vertical-output light source element includes a III-V compound semiconductor light source active layer combined with the bulk silicon substrate by a wafer bonding method.
    Type: Grant
    Filed: May 30, 2017
    Date of Patent: November 5, 2019
    Assignee: ELECTRONICS AND TELECOMMUNICATIONS RESEARCH INSTITUTE
    Inventors: Gyungock Kim, Hyundai Park, In Gyoo Kim, Sang Hoon Kim, Ki Seok Jang, Sang Gi Kim, Jiho Joo, Yongseok Choi, Hyuk Je Kwon, Jaegyu Park, Sun Ae Kim, Jin Hyuk Oh, Myung joon Kwack
  • Publication number: 20190146153
    Abstract: Provided are an optical coupling device and a method for manufacturing the same. The optical coupling device includes a first waveguide including a first forward tapered part, a second waveguide disposed on the first waveguide and including a first reverse tapered part in a direction opposite to the first forward tapered part, and an interlayer waveguide disposed between the first and second waveguides and having a thickness corresponding to a distance between the first forward tapered part and the first reverse tapered part.
    Type: Application
    Filed: November 7, 2018
    Publication date: May 16, 2019
    Inventors: Jaegyu PARK, Gyungock KIM, Jiho JOO
  • Patent number: 10197818
    Abstract: Provided is a thermo-optic optical switch including an input waveguide configured to receive an optical signal, an output waveguide configured to output the optical signal, branch waveguides branching from the input waveguide to be connected to the output waveguide, and heater electrodes disposed on the branch waveguides and configured to heat the branch waveguides, wherein the branch waveguides includes first and second phase shifters having first and second thermo-optic coefficients of opposite signs.
    Type: Grant
    Filed: August 16, 2017
    Date of Patent: February 5, 2019
    Assignee: ELECTRONICS & TELECOMMUNICATIONS RESEARCH INSTITUTE
    Inventors: Myungjoon Kwack, Jaegyu Park, Jiho Joo, Gyungock Kim
  • Patent number: 10168474
    Abstract: Disclosed are an optical input/output device and an opto-electronic system including the same. The device includes a bulk silicon substrate, at least one vertical-input light detection element monolithically integrated on a portion of the bulk silicon substrate, and at least one vertical-output light source element monolithically integrated on another portion of the bulk silicon substrate adjacent to the vertical-input light detection element. The vertical-output light source element includes a III-V compound semiconductor light source active layer combined with the bulk silicon substrate by a wafer bonding method.
    Type: Grant
    Filed: May 30, 2017
    Date of Patent: January 1, 2019
    Assignee: ELECTRONICS AND TELECOMMUNICATIONS RESEARCH INSTITUTE
    Inventors: Gyungock Kim, Hyundai Park, In Gyoo Kim, Sang Hoon Kim, Ki Seok Jang, Sang Gi Kim, Jiho Joo, Yongseok Choi, Hyuk Je Kwon, Jaegyu Park, Sun Ae Kim, Jin Hyuk Oh, myung joon Kwack
  • Patent number: 10151874
    Abstract: A wavelength division multiplexer is disclosed. The wavelength division multiplexer may include an input waveguide, in which a plurality of Bragg gratings for separating multiplexed optical signals into respective optical signals are provided, and a plurality of output waveguides connected to the input waveguide and configured to receive the optical signals separated by the plurality of Bragg gratings. The plurality of Bragg gratings may include a first Bragg grating including first protrusions each having a first width, and a second Bragg grating including second protrusions each having a second width larger than the first width. Each of the first and second protrusions may include a curved side surface, to which a corresponding one of the optical signals is incident.
    Type: Grant
    Filed: October 24, 2017
    Date of Patent: December 11, 2018
    Assignee: ELECTRONICS & TELECOMMUNICATIONS RESEARCH INSTITUTE
    Inventors: Jiho Joo, Myungjoon Kwack, Gyungock Kim, Jaegyu Park
  • Patent number: 10101633
    Abstract: Provided is an optical switch including a substrate, a first optical waveguide disposed on the substrate and having a conductive portion disposed on one surface thereof, and a second optical waveguide disposed on the substrate being spaced apart from the first optical waveguide and having an electrode portion disposed on one surface thereof. The electrode portion and the conductive portion face each other. The electrode portion controls an optical field between the first optical waveguide and the second optical waveguide.
    Type: Grant
    Filed: July 27, 2017
    Date of Patent: October 16, 2018
    Assignee: ELECTRONICS & TELECOMMUNICATIONS RESEARCH INSTITUTE
    Inventors: Jaegyu Park, Myungjoon Kwack, Jiho Joo, Gyungock Kim
  • Patent number: 10031293
    Abstract: Provided is an optical coupler including a substrate, a buffer layer on the substrate, a ridge waveguide having a first side surface and a second side surface opposed to the first side surface, and a first waveguide disposed adjacent to the second side surface. The first waveguide includes a first body part and a first connecting part extending from one end of the first body part to be inserted in the ridge waveguide. The first connecting part has a width decreasing in the direction away from the second side surface, and the ridge waveguide includes an extension part extending under an upper surface of the buffer layer.
    Type: Grant
    Filed: April 14, 2017
    Date of Patent: July 24, 2018
    Assignee: ELECTRONICS AND TELECOMMUNICATIONS RESEARCH INSTITUTE
    Inventors: Jaegyu Park, Myungjoon Kwack, Jiho Joo, Gyungock Kim
  • Publication number: 20180113253
    Abstract: A wavelength division multiplexer is disclosed. The wavelength division multiplexer may include an input waveguide, in which a plurality of Bragg gratings for separating multiplexed optical signals into respective optical signals are provided, and a plurality of output waveguides connected to the input waveguide and configured to receive the optical signals separated by the plurality of Bragg gratings. The plurality of Bragg gratings may include a first Bragg grating including first protrusions each having a first width, and a second Bragg grating including second protrusions each having a second width larger than the first width. Each of the first and second protrusions may include a curved side surface, to which a corresponding one of the optical signals is incident.
    Type: Application
    Filed: October 24, 2017
    Publication date: April 26, 2018
    Inventors: Jiho JOO, Myungjoon KWACK, Gyungock KIM, Jaegyu PARK
  • Publication number: 20180113371
    Abstract: Provided is an optical switch including a substrate, a first optical waveguide disposed on the substrate and having a conductive portion disposed on one surface thereof, and a second optical waveguide disposed on the substrate being spaced apart from the first optical waveguide and having an electrode portion disposed on one surface thereof. The electrode portion and the conductive portion face each other. The electrode portion controls an optical field between the first optical waveguide and the second optical waveguide.
    Type: Application
    Filed: July 27, 2017
    Publication date: April 26, 2018
    Inventors: Jaegyu PARK, Myungjoon KWACK, Jiho JOO, Gyungock KIM
  • Publication number: 20180113332
    Abstract: Provided is a thermo-optic optical switch including an input waveguide configured to receive an optical signal, an output waveguide configured to output the optical signal, branch waveguides branching from the input waveguide to be connected to the output waveguide, and heater electrodes disposed on the branch waveguides and configured to heat the branch waveguides, wherein the branch waveguides includes first and second phase shifters having first and second thermo-optic coefficients of opposite signs.
    Type: Application
    Filed: August 16, 2017
    Publication date: April 26, 2018
    Inventors: Myungjoon KWACK, Jaegyu PARK, Jiho JOO, Gyungock KIM
  • Publication number: 20180100970
    Abstract: Provided is an optical coupler including a substrate, a buffer layer on the substrate, a ridge waveguide having a first side surface and a second side surface opposed to the first side surface, and a first waveguide disposed adjacent to the second side surface. The first waveguide includes a first body part and a first connecting part extending from one end of the first body part to be inserted in the ridge waveguide. The first connecting part has a width decreasing in the direction away from the second side surface, and the ridge waveguide includes an extension part extending under an upper surface of the buffer layer.
    Type: Application
    Filed: April 14, 2017
    Publication date: April 12, 2018
    Inventors: Jaegyu PARK, Myungjoon KWACK, Jiho JOO, Gyungock KIM
  • Publication number: 20170309589
    Abstract: Provided are a semiconductor device and a method for manufacturing the same. The semiconductor device according to an embodiment of the inventive concept includes a first semiconductor chip having a recess portion in one surface thereof; a first adhesion pattern filled within the recess portion of the first semiconductor chip; and a second semiconductor chip disposed on the first adhesion pattern. The second semiconductor chip may represent improved heat dissipation characteristics.
    Type: Application
    Filed: February 2, 2017
    Publication date: October 26, 2017
    Inventors: Myungjoon KWACK, Gyungock KIM, Jaegyu PARK, Jin Hyuk OH, Jiho JOO
  • Publication number: 20170269298
    Abstract: Disclosed are an optical input/output device and an opto-electronic system including the same. The device includes a bulk silicon substrate, at least one vertical-input light detection element monolithically integrated on a portion of the bulk silicon substrate, and at least one vertical-output light source element monolithically integrated on another portion of the bulk silicon substrate adjacent to the vertical-input light detection element. The vertical-output light source element includes a III-V compound semiconductor light source active layer combined with the bulk silicon substrate by a wafer bonding method.
    Type: Application
    Filed: May 30, 2017
    Publication date: September 21, 2017
    Applicant: Electronics and Telecommunications Research Institute
    Inventors: Gyungock KIM, Hyundai PARK, In Gyoo KIM, Sang Hoon KIM, Ki Seok JANG, Sang Gi KIM, Jiho JOO, Yongseok CHOI, Hyuk Je KWON, Jaegyu PARK, Sun Ae KIM, Jin Hyuk OH, myung joon KWACK
  • Publication number: 20170261705
    Abstract: Disclosed are an optical input/output device and an opto-electronic system including the same. The device includes a bulk silicon substrate, at least one vertical-input light detection element monolithically integrated on a portion of the bulk silicon substrate, and at least one vertical-output light source element monolithically integrated on another portion of the bulk silicon substrate adjacent to the vertical-input light detection element. The vertical-output light source element includes a III-V compound semiconductor light source active layer combined with the bulk silicon substrate by a wafer bonding method.
    Type: Application
    Filed: May 30, 2017
    Publication date: September 14, 2017
    Applicant: Electronics and Telecommunications Research Instit ute
    Inventors: Gyungock KIM, Hyundai PARK, In Gyoo KIM, Sang Hoon KIM, Ki Seok JANG, Sang Gi KIM, Jiho JOO, Yongseok CHOI, Hyuk Je KWON, Jaegyu PARK, Sun Ae KIM, Jin Hyuk OH, Myung Joon KWACK