Patents by Inventor Seong-Gu Kim

Seong-Gu Kim 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).

  • Patent number: 11233374
    Abstract: A semiconductor laser device includes a first cladding including gallium nitride (GaN) on a substrate, a light waveguide on the first cladding, a first contact pattern, a first SCH pattern, a first active pattern, a second SCH pattern, a second cladding and a second contact pattern sequentially stacked on the light waveguide, and first and second electrodes on the first and second contact patterns, respectively.
    Type: Grant
    Filed: October 5, 2018
    Date of Patent: January 25, 2022
    Assignee: SAMSUNG ELECTRONICS CO., LTD.
    Inventors: Jung-Ho Cha, Seong-Gu Kim, Dong-Jae Shin, Yong-Hwack Shin, Kyoung-Ho Ha
  • Publication number: 20210356837
    Abstract: An optical beam steering device may include a tunable laser diode configured to emit laser beams and an antenna that includes a grating structure and is configured to convert the laser beams to a linear light source based on the grating structure. The tunable laser diode may emit a first laser beam having a first wavelength, and emit a second laser beam having a second wavelength, the second wavelength different from the first wavelength. The antenna may receive the first laser beam and, in response, output a first linear light source having a first emission angle with a surface of the antenna. The antenna may further receive the second laser beam and, in response, output a second linear light source having a second emission angle with the surface of the antenna, the second emission angle different from the first angle.
    Type: Application
    Filed: July 20, 2021
    Publication date: November 18, 2021
    Applicant: Samsung Electronics Co., Ltd.
    Inventors: Dong Jae SHIN, Seong Gu KIM, Yong Hwack SHIN, Chang Gyun SHIN, Dong Sik SHIM, Chang Bum LEE, Jung Ho CHA, Kyoung Ho HA
  • Patent number: 11099455
    Abstract: An optical beam steering device may include a tunable laser diode configured to emit laser beams and an antenna that includes a grating structure and is configured to convert the laser beams to a linear light source based on the grating structure. The tunable laser diode may emit a first laser beam having a first wavelength, and emit a second laser beam having a second wavelength, the second wavelength different from the first wavelength. The antenna may receive the first laser beam and, in response, output a first linear light source having a first emission angle with a surface of the antenna. The antenna may further receive the second laser beam and, in response, output a second linear light source having a second emission angle with the surface of the antenna, the second emission angle different from the first angle.
    Type: Grant
    Filed: July 23, 2018
    Date of Patent: August 24, 2021
    Assignee: Samsung Electronics Co., Ltd.
    Inventors: Dong Jae Shin, Seong Gu Kim, Yong Hwack Shin, Chang Gyun Shin, Dong Sik Shim, Chang Bum Lee, Jung Ho Cha, Kyoung Ho Ha
  • Patent number: 10910792
    Abstract: Hybrid silicon lasers are provided including a bulk silicon substrate, a localized insulating layer that extends on at least a portion of the bulk silicon substrate, an optical waveguide structure on an upper surface of the localized insulating layer. The optical waveguide structure includes an optical waveguide including a silicon layer. A lasing structure is provided on the optical waveguide structure.
    Type: Grant
    Filed: June 4, 2019
    Date of Patent: February 2, 2021
    Assignee: SAMSUNG ELECTRONICS CO., LTD.
    Inventors: Dong-jae Shin, Dong-hyun Kim, Seong-gu Kim, In-sung Joe, Kyoung-ho Ha
  • Patent number: 10678117
    Abstract: An optical phased array (OPA) may be included in a light detection and ranging (LiDAR) system and may be configured to perform beam steering. The OPA may include a cascading structure of splitters configured to enable a branch operation to be performed M times. Each splitter may split an input optical signal in a ratio of 1:1 and output the split input optical signal. The OPA may include a plurality of sets of first phase shifters (PSs), each set of first PSs located exclusively on one output end of a separate splitter, each set of first PSs including a particular quantity of first PSs based on a branch position at which the separate splitter is located. The OPA may be included in a LiDAR system that is further included in a vehicle that is configured to enable navigation of the vehicle, including autonomous navigation, through an environment.
    Type: Grant
    Filed: March 17, 2017
    Date of Patent: June 9, 2020
    Assignee: Samsung Electronics Co., Ltd.
    Inventors: Dong-jae Shin, Hyun-il Byun, Kyoung-ho Ha, Seong-gu Kim, Jin-kwon Bok, Jung-ho Cha, Dong-hyun Kim, Yong-sang Park, Min-kyung Kim
  • Patent number: 10456707
    Abstract: The present invention relates to a reactor, and according to one aspect of the present invention, there is provided a reactor comprising a housing provided with a reaction space, a tube disposed inside the housing, an impeller provided inside the housing to allow reactants in the reaction space to flow into and out of the tube and a nozzle provided to spray a liquid from the reaction space toward the housing wall surface side.
    Type: Grant
    Filed: November 16, 2016
    Date of Patent: October 29, 2019
    Assignee: LG CHEM, LTD.
    Inventors: Dae Hun Kim, Jun Won Choi, Seung Hyun Yoon, Ye Hoon Im, Chang Hoon Kang, Myeong Yeon Keum, Seong Gu Kim
  • Publication number: 20190288485
    Abstract: Hybrid silicon lasers are provided including a bulk silicon substrate, a localized insulating layer that extends on at least a portion of the bulk silicon substrate, an optical waveguide structure on an upper surface of the localized insulating layer. The optical waveguide structure includes an optical waveguide including a silicon layer. A lasing structure is provided on the optical waveguide structure.
    Type: Application
    Filed: June 4, 2019
    Publication date: September 19, 2019
    Inventors: Dong-jae SHIN, Dong-hyun KIM, Seong-gu KIM, In-sung JOE, Kyoung-ho HA
  • Publication number: 20190229492
    Abstract: A semiconductor laser device includes a first cladding including gallium nitride (GaN) on a substrate, a light waveguide on the first cladding, a first contact pattern, a first SCH pattern, a first active pattern, a second SCH pattern, a second cladding and a second contact pattern sequentially stacked on the light waveguide, and first and second electrodes on the first and second contact patterns, respectively.
    Type: Application
    Filed: October 5, 2018
    Publication date: July 25, 2019
    Inventors: Jung-Ho CHA, Seong-Gu KIM, Dong-Jae SHIN, Yong-Hwack SHIN, Kyoung-Ho HA
  • Publication number: 20190227403
    Abstract: An optical beam steering device may include a tunable laser diode configured to emit laser beams and an antenna that includes a grating structure and is configured to convert the laser beams to a linear light source based on the grating structure. The tunable laser diode may emit a first laser beam having a first wavelength, and emit a second laser beam having a second wavelength, the second wavelength different from the first wavelength. The antenna may receive the first laser beam and, in response, output a first linear light source having a first emission angle with a surface of the antenna. The antenna may further receive the second laser beam and, in response, output a second linear light source having a second emission angle with the surface of the antenna, the second emission angle different from the first angle.
    Type: Application
    Filed: July 23, 2018
    Publication date: July 25, 2019
    Applicant: Samsung Electronics Co., Ltd.
    Inventors: Dong Jae SHIN, Seong Gu KIM, Yong Hwack SHIN, Chang Gyun SHIN, Dong Sik SHIM, Chang Bum LEE, Jung Ho CHA, Kyoung Ho HA
  • Publication number: 20190227150
    Abstract: The bi-directional optical integrated circuit device array includes a plurality of bi-directional optical integrated circuit unit devices integrated on a substrate and arranged in two-dimensions. Each of the bi-directional optical integrated circuit unit devices includes a single wavelength laser light source integrated on the substrate, a bi-directional optical device integrated on the substrate and optically connected to the laser light source, and an antenna integrated on the substrate and optically connected to the bi-directional optical device.
    Type: Application
    Filed: October 3, 2018
    Publication date: July 25, 2019
    Inventors: Dong-jae SHIN, Kyoung-ho HA, Seong-gu KIM, Yong-hwack SHIN, Chang-gyun SHIN, Dong-sik SHIM, Chang-bum LEE, Jung-ho CHA
  • Patent number: 10230473
    Abstract: An optical transmitter includes photonic integrated circuits configured to respectively output optical transmission signals in different wavelength ranges. A photonic integrated circuit may include emitters configured to emit beams having different wavelengths; drivers configured to respectively provide power to the emitters, and a wavelength division multiplexer configured to transmit the beams emitted by the emitters. A photonic integrated circuit may include a switch device that controls the drivers, and light detectors configured to detect intensities of the beams emitted from the emitters. The switch device may selectively operate at least one driver of the plurality of drivers based on information associated with intensities of the beams. The switch device may selectively operate a driver connected to an emitter, based on a determination that an intensity of a beam emitted by another emitter is less than a threshold intensity value.
    Type: Grant
    Filed: February 8, 2017
    Date of Patent: March 12, 2019
    Assignee: Samsung Electronics Co., Ltd.
    Inventors: Dong-jae Shin, Kyoung-ho Ha, Seong-gu Kim, Jin-kwon Bok, Jung-ho Cha, Dong-hyun Kim
  • Publication number: 20180272249
    Abstract: The present invention relates to a reactor, and according to one aspect of the present invention, there is provided a reactor comprising a housing provided with a reaction space, a tube disposed inside the housing, an impeller provided inside the housing to allow reactants in the reaction space to flow into and out of the tube and a nozzle provided to spray a liquid from the reaction space toward the housing wall surface side.
    Type: Application
    Filed: November 16, 2016
    Publication date: September 27, 2018
    Inventors: Dae Hun KIM, Jun Won CHOI, Seung Hyun YOON, Ye Hoon IM, Chang Hoon KANG, Myeong Yeon KEUM, Seong Gu KIM
  • Publication number: 20180052378
    Abstract: An optical phased array (OPA) may be included in a light detection and ranging (LiDAR) system and may be configured to perform beam steering. The OPA may include a cascading structure of splitters configured to enable a branch operation to be performed M times. Each splitter may split an input optical signal in a ratio of 1:1 and output the split input optical signal. The OPA may include a plurality of sets of first phase shifters (PSs), each set of first PSs located exclusively on one output end of a separate splitter, each set of first PSs including a particular quantity of first PSs based on a branch position at which the separate splitter is located. The OPA may be included in a LiDAR system that is further included in a vehicle that is configured to enable navigation of the vehicle, including autonomous navigation, through an environment.
    Type: Application
    Filed: March 17, 2017
    Publication date: February 22, 2018
    Applicant: Samsung Electronics Co., Ltd.
    Inventors: Dong-jae SHIN, Hyun-il Byun, Kyoung-ho Ha, Seong-gu Kim, Jin-kwon Bok, Jung-ho Cha, Dong-hyun Kim, Yong-sang Park, Min-kyung Kim
  • Patent number: 9897753
    Abstract: An optical device includes a substrate; a trench in a portion of the substrate; a clad layer arranged in the trench; a first structure arranged on the clad layer to have a first depth; and a second structure arranged on the clad layer to have a second depth different from the first depth.
    Type: Grant
    Filed: December 22, 2016
    Date of Patent: February 20, 2018
    Assignee: Samsung Electronics Co., Ltd.
    Inventors: Jin-Kwon Bok, Kyoung-Ho Ha, Dong-Jae Shin, Seong-Gu Kim, Kwan-Sik Cho, Beom-Suk Lee, Jung-Ho Cha, Hyun-Il Byun, Dong-Hyun Kim, Yong-Hwack Shin, Jung-Hye Kim
  • Publication number: 20170366272
    Abstract: An optical transmitter includes photonic integrated circuits configured to respectively output optical transmission signals in different wavelength ranges. A photonic integrated circuit may include emitters configured to emit beams having different wavelengths; drivers configured to respectively provide power to the emitters, and a wavelength division multiplexer configured to transmit the beams emitted by the emitters. A photonic integrated circuit may include a switch device that controls the drivers, and light detectors configured to detect intensities of the beams emitted from the emitters. The switch device may selectively operate at least one driver of the plurality of drivers based on information associated with intensities of the beams. The switch device may selectively operate a driver connected to an emitter, based on a determination that an intensity of a beam emitted by another emitter is less than a threshold intensity value.
    Type: Application
    Filed: February 8, 2017
    Publication date: December 21, 2017
    Applicant: Samsung Electronics Co., Ltd.
    Inventors: Dong-jae SHIN, Kyoung-ho HA, Seong-gu KIM, Jin-kwon BOK, Jung-ho CHA, Dong-hyun KIM
  • Patent number: 9766398
    Abstract: An optical apparatus includes an optical waveguide located on a substrate and including a guiding portion and a taper portion, and a grating pattern located on the substrate. The grating pattern includes a plurality of low refractive index portions and a plurality of high refractive index portions, which are alternately arranged in a first direction parallel to a top surface of the substrate. Each of the plurality of high refractive index portions includes a curved inner sidewall and a curved outer sidewall having curvatures defined by circular paths. The inner sidewall and the outer sidewall of at least one of the plurality of high refractive index portions have a first focus position. The inner sidewall or the outer sidewall of at least one of the plurality of high refractive index portions or a sidewall of the taper portion has a second focus position different from the first focus position.
    Type: Grant
    Filed: September 8, 2016
    Date of Patent: September 19, 2017
    Assignee: Samsung Electronics Co., Ltd.
    Inventors: Duanhua Kong, Seong-gu Kim, Hyun-il Byun
  • Publication number: 20170184786
    Abstract: An optical device includes a substrate; a trench in a portion of the substrate; a clad layer arranged in the trench; a first structure arranged on the clad layer to have a first depth; and a second structure arranged on the clad layer to have a second depth different from the first depth.
    Type: Application
    Filed: December 22, 2016
    Publication date: June 29, 2017
    Inventors: JIN-KWON BOK, KYOUNG-HO HA, DONG-JAE SHIN, SEONG-GU KIM, KWAN-SIK CHO, BEOM-SUK LEE, JUNG-HO CHA, HYUN-IL BYUN, DONG-HYUN KIM, YONG-HWACK SHIN, JUNG-HYE KIM
  • Publication number: 20170082800
    Abstract: An optical apparatus includes an optical waveguide located on a substrate and including a guiding portion and a taper portion, and a grating pattern located on the substrate. The grating pattern includes a plurality of low refractive index portions and a plurality of high refractive index portions, which are alternately arranged in a first direction parallel to a top surface of the substrate. Each of the plurality of high refractive index portions includes a curved inner sidewall and a curved outer sidewall having curvatures defined by circular paths. The inner sidewall and the outer sidewall of at least one of the plurality of high refractive index portions have a first focus position. The inner sidewall or the outer sidewall of at least one of the plurality of high refractive index portions or a sidewall of the taper portion has a second focus position different from the first focus position.
    Type: Application
    Filed: September 8, 2016
    Publication date: March 23, 2017
    Inventors: Duanhua Kong, Seong-gu Kim, Hyun-il Byun
  • Publication number: 20160178847
    Abstract: An optical coupler includes a tapered portion and a grating portion. The tapered portion has a width in a second direction increasing along a first direction substantially perpendicular to the second direction. The tapered portion includes first and second ends opposed to each other in the first direction. The first end has a first width, and the second end has a second width greater than the first width. The grating portion is connected to the second end of the tapered portion, and has a curvature radius greater than a distance to the first end of the tapered portion.
    Type: Application
    Filed: December 8, 2015
    Publication date: June 23, 2016
    Inventors: Seong-Gu Kim, Dong-Hyun KIM, Jin-Kwon BOK, Dong-Jae SHIN, In-Sung JOE, Kyoung-Ho HA
  • Patent number: 9325414
    Abstract: A data processing system may include: a first device; a second device; and an optical link connected between the first and second devices. The optical link may include a main optical waveguide configured to transmit an optical signal output from the second device; N sub-optical waveguides; N mode couplers, each configured to perform a mode coupling operation between the main optical waveguide and a respective one of the N sub-optical waveguides; and an optical wavelength filter connected to an output terminal of the main optical waveguide and an output terminal of each one of the N sub-optical waveguides. Each of the N sub-optical waveguides may include a first region formed at a first distance from the main optical waveguide; a second region formed at a second, greater distance from the main optical waveguide; and a third region for connecting the first and second regions.
    Type: Grant
    Filed: October 14, 2015
    Date of Patent: April 26, 2016
    Assignee: SAMSUNG ELECTRONICS CO., LTD.
    Inventors: Sung Dong Suh, In Sung Joe, Seong Gu Kim, Kyoung Won Na, Kyoung Ho Ha, Yong Hwack Shin