Patents by Inventor Kee Kwon

Kee Kwon 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: 20250105589
    Abstract: Provided is a continuous frequency-tuning array light source. The light source may include a substrate including a gain region, a phase modulation region, and an internal reflection region arranged in a first direction, a core layer extending in the first direction on the substrate and including a grating in the internal reflection region, an upper clad layer on the core layer and the substrate, external reflection coating on one side wall of the substrate adjacent to the gain region, the core layer, and the upper clad layer, a dielectric layer on the upper clad layer in the phase modulation region and the internal reflection region, an ohmic contact layer on the upper clad layer in the gain region, and electrodes on the dielectric layer and the ohmic contact layer.
    Type: Application
    Filed: August 9, 2024
    Publication date: March 27, 2025
    Inventors: Oh Kee KWON, Chul-Wook LEE
  • Patent number: 12224553
    Abstract: Provided is a laser diode and a method for manufacturing the same. The diode includes a substrate including a DBR region having a channel hole, an active region, and a phase shift region, an optical waveguide provided on the substrate and extending from the active region to the DBR region, a lower insulation layer disposed on the optical waveguide, upper electrodes disposed on the lower insulation layer, and a heat blocking layer disposed in the channel hole of the DBR region and thermally separating the optical waveguide from the substrate.
    Type: Grant
    Filed: December 23, 2021
    Date of Patent: February 11, 2025
    Assignee: Electronics and Telecommunications Research Institute
    Inventors: Su Hwan Oh, Oh Kee Kwon, Chul-Wook Lee, Kisoo Kim
  • Publication number: 20250045127
    Abstract: A multilevel processing in memory (PIM) includes a processor in which an optimal operator installed at several layers of memory, an accelerator type circuit for processing an irregular operation, and a scheduler for processing an irregular operation have been installed. The multilevel processing in memory includes a memory module including at least one rank in which a computation operation and a data storage operation are performed in response to a control command from a memory controller. The memory module, the rank, a PIM command scheduler included in the rank, a bank group processing unit, and a bank group constitute a plurality of layers, respectively.
    Type: Application
    Filed: July 31, 2023
    Publication date: February 6, 2025
    Inventors: Joo Young KIM, Dong Hyuk Kim, Jae Young Kim, Wok Tak Han, Hae Rang Choi, Yong Kee Kwon, Jong Soon Won
  • Publication number: 20240403600
    Abstract: A processing-in-memory (PIM)-based accelerating device includes a plurality of PIM devices, a PIM network system configured to control traffic of signals and data for the plurality of PIM devices, and a first interface configured to perform interfacing with a host device. The PIM network system controls the traffic so that the plurality of PIM devices perform different operations, the plurality of PIM devices perform different operations in groups, or the plurality of PIM devices perform the same operation in parallel.
    Type: Application
    Filed: November 13, 2023
    Publication date: December 5, 2024
    Applicant: SK hynix Inc.
    Inventors: Yong Kee KWON, Gu Hyun KIM, Nah Sung KIM, Chang Hyun KIM, Gyeong Cheol SHIN, Byeong Ju AN, Hae Rang CHOI
  • Patent number: 12068576
    Abstract: Provided are an optical waveguide device and a laser apparatus including the same. The optical waveguide device includes a peripheral part disposed on an edge region of a substrate, an air pocket disposed on a central region of the substrate within the peripheral part, an optical waveguide comprising a core layer, which is disposed on an upper portion of the substrate within the air pocket to extend in a first direction, and an electrode on the core layer, and a plurality of hinges disposed on the air pocket to connect the optical waveguide to the peripheral part in a second direction crossing the first direction.
    Type: Grant
    Filed: May 6, 2021
    Date of Patent: August 20, 2024
    Assignee: Electronics and Telecommunications Research Institute
    Inventors: Oh Kee Kwon, Su Hwan Oh, Chul-Wook Lee, Kisoo Kim
  • Patent number: 12062884
    Abstract: Provided is a laser device according to embodiments of the inventive concept comprising a substrate including a gain region, a phase control region, and a tuning region arranged along a first direction, the substrate having an air gap which extends from the phase control region to the tuning region, an upper clad layer on the substrate, a waveguide structure extending in the first direction between the upper clad layer and the substrate, a first upper electrode disposed on the upper surface of the upper clad layer of the tuning region, and a lower electrode disposed on a lower surface of the substrate and extending from the gain region to the tuning region, wherein the air gap may have a larger width than the waveguide in a second direction crossing the first direction.
    Type: Grant
    Filed: February 23, 2021
    Date of Patent: August 13, 2024
    Assignee: ELECTRONICS AND TELECOMMUNICATIONS RESEARCH INSTITUTE
    Inventors: Oh Kee Kwon, Kisoo Kim, Su Hwan Oh, Chul-Wook Lee
  • Patent number: 11710938
    Abstract: Disclosed are a wavelength-selectable laser diode and an optical communication apparatus including the same. The wavelength-selectable laser diode includes a substrate, which includes a gain region, a tuning region spaced apart from the gain region, and a phase adjusting region between the tuning region and the gain region, a waveguide layer on the substrate, a clad layer on the waveguide layer, and gratings disposed on the substrate or the clad layer in the gain region and the tuning region.
    Type: Grant
    Filed: March 26, 2021
    Date of Patent: July 25, 2023
    Assignee: Electronics and Telecommunications Research Institute
    Inventors: Oh Kee Kwon, Su Hwan Oh, Kisoo Kim, Chul-Wook Lee
  • Patent number: 11589140
    Abstract: An optical beamforming device includes an RF front-end transmitting or receiving RF signals and an optical beamformer forming or compensating for a time delay for each of the plurality of channels based on the RF signals. The optical beamformer includes E/O converters converting the RF signals into optical signals, respectively, a linear modulator generating an optical modulation signal based on an RF input signal, a TTD array outputting an optical combined signal obtained by compensating for a time delay degree of the input optical signals or outputting output optical signals, in each of which a time delay is formed for each channel, by distributing the optical modulation signal, a photo detector generating an RF output signal to an RF back-end based on the optical combined signal, and O/E converters converting the output optical signals into RF signals, respectively.
    Type: Grant
    Filed: June 4, 2021
    Date of Patent: February 21, 2023
    Assignee: Electronics and Telecommunications Research Institute
    Inventor: Oh Kee Kwon
  • Patent number: 11454831
    Abstract: An optical device according to the embodiment of the inventive concept includes a waveguide path including a light generation region, a wavelength variable region, and a light modulation region, a first light waveguide layer provided in the light generation region to generate light, a second light waveguide layer provided in the wavelength variable region and connected to the first light waveguide layer, a ring-shaped third light waveguide layer provided in the light modulation region and connected to the second light waveguide layer, and first and second light modulation electrodes spaced apart from each other with the light modulation region therebetween. Here, the first light modulation electrode, the third light waveguide layer, and the second light modulation electrode vertically overlap each other.
    Type: Grant
    Filed: January 27, 2021
    Date of Patent: September 27, 2022
    Assignee: Electronics and Telecommunications Research Institute
    Inventors: Oh Kee Kwon, Kisoo Kim, Su Hwan Oh, Chul-Wook Lee
  • Patent number: 11424831
    Abstract: Disclosed is a frequency swept source apparatus including a mode locking laser that outputs an input optical signal having first to n-th frequency components, a transmission delay controller that generates first to m-th sub-optical signals, each of which includes at least one component of the first to n-th frequency components, and outputs a delay optical signal obtained by sequentially delaying the first to m-th sub-optical signals. The transmission delay controller includes a demultiplexer that outputs the first to m-th sub-optical signals to first to m-th channels based on the input optical signal, respectively, a path delay unit that adjusts lengths of optical paths of the first to m-th channels so as to be different from one another, a refractive index controller that adjusts a refractive index of each of the first to m-th channels, and a multiplexer that combines the first to m-th sub-optical signals.
    Type: Grant
    Filed: November 30, 2021
    Date of Patent: August 23, 2022
    Assignee: Electronics and Telecommunications Research Institute
    Inventor: Oh Kee Kwon
  • Publication number: 20220255291
    Abstract: Provided is a laser diode and a method for manufacturing the same. The diode includes a substrate including a DBR region having a channel hole, an active region, and a phase shift region, an optical waveguide provided on the substrate and extending from the active region to the DBR region, a lower insulation layer disposed on the optical waveguide, upper electrodes disposed on the lower insulation layer, and a heat blocking layer disposed in the channel hole of the DBR region and thermally separating the optical waveguide from the substrate.
    Type: Application
    Filed: December 23, 2021
    Publication date: August 11, 2022
    Applicant: ELECTRONICS AND TELECOMMUNICATIONS RESEARCH INSTITUTE
    Inventors: Su Hwan OH, Oh Kee KWON, Chul-Wook LEE, Kisoo KIM
  • Publication number: 20220173812
    Abstract: Disclosed is a frequency swept source apparatus including a mode locking laser that outputs an input optical signal having first to n-th frequency components, a transmission delay controller that generates first to m-th sub-optical signals, each of which includes at least one component of the first to n-th frequency components, and outputs a delay optical signal obtained by sequentially delaying the first to m-th sub-optical signals. The transmission delay controller includes a demultiplexer that outputs the first to m-th sub-optical signals to first to m-th channels based on the input optical signal, respectively, a path delay unit that adjusts lengths of optical paths of the first to m-th channels so as to be different from one another, a refractive index controller that adjusts a refractive index of each of the first to m-th channels, and a multiplexer that combines the first to m-th sub-optical signals.
    Type: Application
    Filed: November 30, 2021
    Publication date: June 2, 2022
    Applicant: ELECTRONICS AND TELECOMMUNICATIONS RESEARCH INSTITUTE
    Inventor: Oh Kee KWON
  • Publication number: 20220029378
    Abstract: Provided are an optical waveguide device and a laser apparatus including the same. The optical waveguide device includes a peripheral part disposed on an edge region of a substrate, an air pocket disposed on a central region of the substrate within the peripheral part, an optical waveguide comprising a core layer, which is disposed on an upper portion of the substrate within the air pocket to extend in a first direction, and an electrode on the core layer, and a plurality of hinges disposed on the air pocket to connect the optical waveguide to the peripheral part in a second direction crossing the first direction.
    Type: Application
    Filed: May 6, 2021
    Publication date: January 27, 2022
    Applicant: ELECTRONICS AND TELECOMMUNICATIONS RESEARCH INSTITUTE
    Inventors: Oh Kee KWON, Su Hwan OH, Chul-Wook LEE, Kisoo KIM
  • Publication number: 20210385561
    Abstract: An optical beamforming device includes an RF front-end transmitting or receiving RF signals and an optical beamformer forming or compensating for a time delay for each of the plurality of channels based on the RF signals. The optical beamformer includes E/O converters converting the RF signals into optical signals, respectively, a linear modulator generating an optical modulation signal based on an RF input signal, a TTD array outputting an optical combined signal obtained by compensating for a time delay degree of the input optical signals or outputting output optical signals, in each of which a time delay is formed for each channel, by distributing the optical modulation signal, a photo detector generating an RF output signal to an RF back-end based on the optical combined signal, and O/E converters converting the output optical signals into RF signals, respectively.
    Type: Application
    Filed: June 4, 2021
    Publication date: December 9, 2021
    Applicant: ELECTRONICS AND TELECOMMUNICATIONS RESEARCH INSTITUTE
    Inventor: Oh Kee KWON
  • Publication number: 20210313766
    Abstract: Disclosed are a wavelength-selectable laser diode and an optical communication apparatus including the same. The wavelength-selectable laser diode includes a substrate, which includes a gain region, a tuning region spaced apart from the gain region, and a phase adjusting region between the tuning region and the gain region, a waveguide layer on the substrate, a clad layer on the waveguide layer, and gratings disposed on the substrate or the clad layer in the gain region and the tuning region.
    Type: Application
    Filed: March 26, 2021
    Publication date: October 7, 2021
    Applicant: ELECTRONICS AND TELECOMMUNICATIONS RESEARCH INSTITUTE
    Inventors: Oh Kee KWON, Su Hwan OH, Kisoo KIM, Chul-Wook LEE
  • Publication number: 20210288463
    Abstract: Provided is a laser device according to embodiments of the inventive concept comprising a substrate including a gain region, a phase control region, and a tuning region arranged along a first direction, the substrate having an air gap which extends from the phase control region to the tuning region, an upper clad layer on the substrate, a waveguide structure extending in the first direction between the upper clad layer and the substrate, a first upper electrode disposed on the upper surface of the upper clad layer of the tuning region, and a lower electrode disposed on a lower surface of the substrate and extending from the gain region to the tuning region, wherein the air gap may have a larger width than the waveguide in a second direction crossing the first direction.
    Type: Application
    Filed: February 23, 2021
    Publication date: September 16, 2021
    Applicant: Electronics and Telecommunications Research Institute
    Inventors: Oh Kee KWON, Kisoo KIM, Su Hwan OH, Chul-Wook LEE
  • Publication number: 20210149226
    Abstract: An optical device according to the embodiment of the inventive concept includes a waveguide path including a light generation region, a wavelength variable region, and a light modulation region, a first light waveguide layer provided in the light generation region to generate light, a second light waveguide layer provided in the wavelength variable region and connected to the first light waveguide layer, a ring-shaped third light waveguide layer provided in the light modulation region and connected to the second light waveguide layer, and first and second light modulation electrodes spaced apart from each other with the light modulation region therebetween. Here, the first light modulation electrode, the third light waveguide layer, and the second light modulation electrode vertically overlap each other.
    Type: Application
    Filed: January 27, 2021
    Publication date: May 20, 2021
    Applicant: ELECTRONICS AND TELECOMMUNICATIONS RESEARCH INSTITUTE
    Inventors: Oh Kee KWON, Kisoo KIM, Su Hwan OH, Chul-Wook LEE
  • Patent number: 10935817
    Abstract: An optical device according to the embodiment of the inventive concept includes a waveguide path including a light generation region, a wavelength variable region, and a light modulation region, a first light waveguide layer provided in the light generation region to generate light, a second light waveguide layer provided in the wavelength variable region and connected to the first light waveguide layer, a ring-shaped third light waveguide layer provided in the light modulation region and connected to the second light waveguide layer, and first and second light modulation electrodes spaced apart from each other with the light modulation region therebetween. Here, the first light modulation electrode, the third light waveguide layer, and the second light modulation electrode vertically overlap each other.
    Type: Grant
    Filed: September 26, 2019
    Date of Patent: March 2, 2021
    Assignee: Electronics and Telecommunications Research Institute
    Inventors: Oh Kee Kwon, Kisoo Kim, Su Hwan Oh, Chul-Wook Lee
  • Patent number: 10931083
    Abstract: An optical apparatus includes a cooling device with a lower clad disposed thereon; a waveguide disposed on the lower clad and including an active waveguide to define a gain section and a passive waveguide to define a wavelength-tunable section; gratings disposed in the lower clad of the wavelength-tunable section; an upper clad disposed on the waveguide; a first upper electrode disposed on the upper clad of the gain section; and a second upper electrode disposed on the upper clad of the wavelength-tunable section. The lower clad of the wavelength-tunable section has a recess region to expose an upper surface of the cooling device, the recess region forming an air gap-having a height of 10 ?m to 80 ?m from the upper surface of the cooling device. The gratings are formed in a depth of at least 5 ?m from a bottom surface of the lower clad of the recess region.
    Type: Grant
    Filed: September 27, 2019
    Date of Patent: February 23, 2021
    Assignee: Electronics and Telecommunications Research Institute
    Inventors: Oh Kee Kwon, Su Hwan Oh, Chul-Wook Lee, Kisoo Kim
  • Patent number: 10852617
    Abstract: A light comb generating device according to a disclosed embodiment includes a light source for generating light in a reference wavelength band and outputting the generated light, and an optical comb generator for generating a light comb having a reference comb interval from the output light, wherein the light source changes a wavelength of the output light as much as a reference frequency interval for every reference time interval, the light comb is generated within a wavelength range of the reference frequency interval, and the reference wavelength band may be at least about 3 ?m and no greater than about 30 ?m.
    Type: Grant
    Filed: March 7, 2019
    Date of Patent: December 1, 2020
    Assignee: ELECTRONICS AND TELECOMMUNICATIONS RESEARCH INSTITUTE
    Inventors: Oh Kee Kwon, Kisoo Kim, Sung Bock Kim, Young Ahn Leem