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).
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Patent number: 11233374Abstract: 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: GrantFiled: October 5, 2018Date of Patent: January 25, 2022Assignee: SAMSUNG ELECTRONICS CO., LTD.Inventors: Jung-Ho Cha, Seong-Gu Kim, Dong-Jae Shin, Yong-Hwack Shin, Kyoung-Ho Ha
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Publication number: 20210356837Abstract: 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: ApplicationFiled: July 20, 2021Publication date: November 18, 2021Applicant: 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
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Patent number: 11099455Abstract: 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: GrantFiled: July 23, 2018Date of Patent: August 24, 2021Assignee: 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
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Patent number: 10910792Abstract: 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: GrantFiled: June 4, 2019Date of Patent: February 2, 2021Assignee: SAMSUNG ELECTRONICS CO., LTD.Inventors: Dong-jae Shin, Dong-hyun Kim, Seong-gu Kim, In-sung Joe, Kyoung-ho Ha
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Patent number: 10678117Abstract: 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: GrantFiled: March 17, 2017Date of Patent: June 9, 2020Assignee: 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
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Patent number: 10456707Abstract: 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: GrantFiled: November 16, 2016Date of Patent: October 29, 2019Assignee: 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
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Publication number: 20190288485Abstract: 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: ApplicationFiled: June 4, 2019Publication date: September 19, 2019Inventors: Dong-jae SHIN, Dong-hyun KIM, Seong-gu KIM, In-sung JOE, Kyoung-ho HA
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Publication number: 20190229492Abstract: 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: ApplicationFiled: October 5, 2018Publication date: July 25, 2019Inventors: Jung-Ho CHA, Seong-Gu KIM, Dong-Jae SHIN, Yong-Hwack SHIN, Kyoung-Ho HA
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Publication number: 20190227403Abstract: 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: ApplicationFiled: July 23, 2018Publication date: July 25, 2019Applicant: 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
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Publication number: 20190227150Abstract: 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: ApplicationFiled: October 3, 2018Publication date: July 25, 2019Inventors: Dong-jae SHIN, Kyoung-ho HA, Seong-gu KIM, Yong-hwack SHIN, Chang-gyun SHIN, Dong-sik SHIM, Chang-bum LEE, Jung-ho CHA
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Patent number: 10230473Abstract: 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: GrantFiled: February 8, 2017Date of Patent: March 12, 2019Assignee: Samsung Electronics Co., Ltd.Inventors: Dong-jae Shin, Kyoung-ho Ha, Seong-gu Kim, Jin-kwon Bok, Jung-ho Cha, Dong-hyun Kim
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Publication number: 20180272249Abstract: 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: ApplicationFiled: November 16, 2016Publication date: September 27, 2018Inventors: Dae Hun KIM, Jun Won CHOI, Seung Hyun YOON, Ye Hoon IM, Chang Hoon KANG, Myeong Yeon KEUM, Seong Gu KIM
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Publication number: 20180052378Abstract: 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: ApplicationFiled: March 17, 2017Publication date: February 22, 2018Applicant: 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
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Patent number: 9897753Abstract: 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: GrantFiled: December 22, 2016Date of Patent: February 20, 2018Assignee: 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
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Publication number: 20170366272Abstract: 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: ApplicationFiled: February 8, 2017Publication date: December 21, 2017Applicant: Samsung Electronics Co., Ltd.Inventors: Dong-jae SHIN, Kyoung-ho HA, Seong-gu KIM, Jin-kwon BOK, Jung-ho CHA, Dong-hyun KIM
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Patent number: 9766398Abstract: 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: GrantFiled: September 8, 2016Date of Patent: September 19, 2017Assignee: Samsung Electronics Co., Ltd.Inventors: Duanhua Kong, Seong-gu Kim, Hyun-il Byun
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Publication number: 20170184786Abstract: 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: ApplicationFiled: December 22, 2016Publication date: June 29, 2017Inventors: 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
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Publication number: 20170082800Abstract: 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: ApplicationFiled: September 8, 2016Publication date: March 23, 2017Inventors: Duanhua Kong, Seong-gu Kim, Hyun-il Byun
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Publication number: 20160178847Abstract: 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: ApplicationFiled: December 8, 2015Publication date: June 23, 2016Inventors: Seong-Gu Kim, Dong-Hyun KIM, Jin-Kwon BOK, Dong-Jae SHIN, In-Sung JOE, Kyoung-Ho HA
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Patent number: 9325414Abstract: 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: GrantFiled: October 14, 2015Date of Patent: April 26, 2016Assignee: SAMSUNG ELECTRONICS CO., LTD.Inventors: Sung Dong Suh, In Sung Joe, Seong Gu Kim, Kyoung Won Na, Kyoung Ho Ha, Yong Hwack Shin