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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：US09276376B2
公开(公告)日：2016-03-01
申请号：US14336504
申请日：2014-07-21
Inventor： Su Hwan Oh , Oh Kee Kwon
CPC classification number: H01S5/02469 , G02B6/2804 , G02B6/4204 , G02B6/4269 , G02B6/4271 , H01S5/02212 , H01S5/02284 , H01S5/4012
Abstract: A laser module includes a Transmitter Optical Sub-Assembly (TOSA) and a heat radiating means. The TOSA generates light by an electrical signal and transmits the generated light through an optical fiber. The heat radiating means is in contact with the TOSA to discharge heat generated by the TOSA.
Abstract translation: 激光模块包括发射机光学子组件（TOSA）和散热装置。 TOSA通过电信号产生光，并通过光纤传输所产生的光。 散热装置与TOSA接触以排放TOSA产生的热量。
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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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Patent Agency Ranking
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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公开(公告)号：US11710938B2
公开(公告)日：2023-07-25
申请号：US17213359
申请日：2021-03-26
Inventor： Oh Kee Kwon , Su Hwan Oh , Kisoo Kim , Chul-Wook Lee
CPC classification number: H01S5/0611 , H01S5/1209 , H01S5/1218 , H01S5/2228 , H01S5/34 , H04B10/503
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.
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公开(公告)号：US10935817B2
公开(公告)日：2021-03-02
申请号：US16584363
申请日：2019-09-26
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：US09720177B2
公开(公告)日：2017-08-01
申请号：US15170626
申请日：2016-06-01
Inventor： Shin Mo An , Oh Kee Kwon
CPC classification number: G02B6/2931 , G02B6/2706 , G02B6/2773 , G02B6/29307 , G02B6/29308 , G02B6/2938
Abstract: An optical phase diversity receiver may include: a diffraction grating including grating surfaces; a first input waveguide to which a first optical signal is inputted; a second input waveguide to which a second optical signal is inputted; and a slab waveguide including an input terminal optically coupled with the first and second input waveguides, and an output terminal provided at a position at which optical signals reflected by the diffraction grating reach the slab waveguide. Every determined number of grating surfaces are chirped in an identical manner. The slab waveguide is configured to guide the first and the second optical signals to the diffraction grating and guide the optical signals reflected by the diffraction grating to the output terminal. The grating surfaces are configured such that each of the optical signals reflected by the diffraction grating is divided into the predetermined number by optical power distribution.
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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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