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公开(公告)号：US10476232B2
公开(公告)日：2019-11-12
申请号：US15702262
申请日：2017-09-12
Inventor： OH Kee Kwon , Su Hwan Oh , Chul-Wook Lee , Kisoo Kim
IPC: H01S5/125 , H01S5/024 , H01S5/026 , H01S5/12 , H01S5/065 , H01S5/0625 , H01S5/042 , H01S5/06 , H01S5/02
Abstract: Provided are an optical apparatus, a manufacturing method of a distributed Bragg reflector laser diode, and a manufacturing method of the optical apparatus, the an optical apparatus including a cooling device, a distributed Bragg reflector laser diode having a lower clad including a recess region on one side of the cooling device and connected to another side of the cooling device, and an air gap between the cooling device and the distributed Bragg reflector laser diode, wherein the air gap is defined by a bottom surface of the lower clad in the recess region and a top surface of the cooling device.
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公开(公告)号：US10148067B2
公开(公告)日：2018-12-04
申请号：US15712874
申请日：2017-09-22
Inventor： Oh Kee Kwon , Chul-Wook Lee , Su Hwan Oh , Kisoo Kim
Abstract: Provided is a distributed Bragg reflector tunable laser diode including a substrate provided with a gain section having an active waveguide from which a gain of laser light is obtained and a distributed reflector section having a passive waveguide connected to the active waveguide, wherein the distributed reflector section includes gratings disposed on or under the passive waveguide, a current injection electrode disposed on the passive waveguide and configured to provide a current into the passive waveguide to electrically tune a wavelength of the laser light, and a heater electrode disposed on the current injection electrode and configured to heat the passive waveguide to thermally tune the wavelength of the laser light, wherein the gratings, the current injection electrode, and the heater electrode vertically overlap each other.
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公开(公告)号：US09234964B2
公开(公告)日：2016-01-12
申请号：US13916250
申请日：2013-06-12
Inventor： Bongki Mheen , MyoungSook Oh , Kisoo Kim , Jae-Sik Sim , Yong-Hwan Kwon , Eun Soo Nam
CPC classification number: G01S17/89 , G01S7/4815 , G01S7/4818 , G01S7/484 , G01S7/4863
Abstract: Disclosed are a laser radar system and a method for acquiring an image of a target, and the laser radar system includes: a beam source to emit the laser beam; a beam deflector disposed between the beam source and the target, and configured to deflect the laser beam emitted from the beam source in a scanning direction of the target as time elapses; and an optical detector configured to detect the laser beam reflected from the target, which is provided a plurality of beam spots having a diameter DRBS; and a receiving optical system disposed between the target and the optical detector and configured to converge the laser beam reflected from the target, and the optical detector includes a detecting area having a diameter DDA that satisfies an equation of √{square root over (2)}×PRBS+2×DRBS≦DDA≦2×Dlens and an equation of (4/π)×λ×F_number
Abstract translation: 公开了一种用于获取目标图像的激光雷达系统和方法，并且激光雷达系统包括：发射激光束的光束源; 光束偏转器，设置在所述光束源和所述目标之间，并且被配置为随着时间的过去使从所述光束源发射的激光束沿所述目标的扫描方向偏转; 以及光检测器，被配置为检测从所述目标物反射的激光束，所述激光束设置有多个具有直径DRBS的光束点; 以及接收光学系统，其设置在所述目标和所述光学检测器之间并且被配置为会聚从所述目标物反射的所述激光束，并且所述光学检测器包括检测区域，所述检测区域具有满足方程式（2）的直径DDA， }×PRBS + 2×DRBS＆nlE; DDA＆nlE; 2×Dlens和（4 /＆pgr;）×λ×F_number
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公开(公告)号：US20140175511A1
公开(公告)日：2014-06-26
申请号：US13950454
申请日：2013-07-25
Inventor： Jae-Sik SIM , Bongki Mheen , Kisoo Kim , Myoungsook Oh
IPC: H01L31/107
CPC classification number: H01L31/1075
Abstract: An avalanche photodiode according to the inventive concept includes a substrate, light absorption layers on the substrate, clad layers on the light absorption layers, and active regions in the clad layers. The light absorption layers, the clad layers, and the active regions constitute unit cells. Each of the unit cells has a fan-shape.
Abstract translation: 根据本发明构思的雪崩光电二极管包括衬底，衬底上的光吸收层，光吸收层上的包覆层以及包层中的有源区。 光吸收层，包层和有源区构成单元。 每个单电池都有扇形。
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公开(公告)号：US20240353728A1
公开(公告)日：2024-10-24
申请号：US18412930
申请日：2024-01-15
Inventor： Jaegyu PARK , Sungil Kim , Kisoo Kim
IPC: G02F1/21
CPC classification number: G02F1/212
Abstract: Provided is a Mach-Zehnder optical modulator. The optical modulator thereof includes an input waveguide on one side of a substrate, an output waveguide on the other side of the substrate, an optical power splitter between the input waveguide and the output waveguide, an optical power combiner between the optical power splitter and the output waveguide, branch waveguides between the optical power splitter and the optical power combiner, and electrodes provided on the outer periphery of the branch waveguides and between the branch waveguides, and multi-mode interferers provided between the electrodes, and connected in series to the branch waveguides.
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Patent Agency Ranking
公开(公告)号：US11454831B2
公开(公告)日：2022-09-27
申请号：US17159947
申请日：2021-01-27
Inventor： Oh Kee Kwon , Kisoo Kim , Su Hwan Oh , Chul-Wook Lee
IPC: G02F1/01
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.
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公开(公告)号：US12224553B2
公开(公告)日：2025-02-11
申请号：US17561212
申请日：2021-12-23
Inventor： Su Hwan Oh , Oh Kee Kwon , Chul-Wook Lee , Kisoo Kim
IPC: H01S5/024 , H01S5/02 , H01S5/026 , H01S5/0625 , H01S5/125
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.
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公开(公告)号：US12062884B2
公开(公告)日：2024-08-13
申请号：US17182976
申请日：2021-02-23
Inventor： Oh Kee Kwon , Kisoo Kim , Su Hwan Oh , Chul-Wook Lee
CPC classification number: H01S5/06256 , H01S5/026 , H01S5/04256 , H01S5/0625 , H01S5/068 , H01S5/227 , H01S5/06258 , H01S5/1007 , H01S5/18363
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.
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公开(公告)号：US10931083B2
公开(公告)日：2021-02-23
申请号：US16585035
申请日：2019-09-27
Inventor： Oh Kee Kwon , Su Hwan Oh , Chul-Wook Lee , Kisoo Kim
IPC: H01S5/125 , H01S5/024 , H01S5/026 , H01S5/12 , H01S5/065 , H01S5/0625 , H01S5/06 , H01S5/02 , H01S5/042
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 μm to 80 μm from the upper surface of the cooling device. The gratings are formed in a depth of at least 5 μm from a bottom surface of the lower clad of the recess region.
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公开(公告)号：US10852617B2
公开(公告)日：2020-12-01
申请号：US16295786
申请日：2019-03-07
Inventor： Oh Kee Kwon , Kisoo Kim , Sung Bock Kim , Young Ahn Leem
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 μm and no greater than about 30 μm.
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