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公开(公告)号：US20230258885A1
公开(公告)日：2023-08-17
申请号：US18079973
申请日：2022-12-13
Inventor： Joong-Seon CHOE , Duk Jun KIM , Chun Ju YOUN
IPC: G02B6/42
CPC classification number: G02B6/423 , G02B6/4202 , G02B6/4243
Abstract: An optical alignment device according to an embodiment of the inventive concept includes an optical alignment plate having a first hole and at least one second hole, in which the first hole and the second hole pass through the optical alignment plate, and an optical detection element disposed on the optical alignment plate. Here, the optical detection element includes a substrate having a first surface and a second surface, which face each other, a lens disposed on the first surface, and an optical sensor disposed on the second surface, and the optical detection element vertically overlaps the first hole and the second hole. The lens is exposed to the outside by the first hole, and the second hole is connected with a vacuum suction unit to fix the optical detection element to the optical alignment plate.
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2.发明申请COMPOUND CONTAINING CROSSLINKABLE MOIETIES, PREPOLYMER, BLEND AND POLYMER SHEET OBTAINED THEREFROM, AND WAVEGUIDE FOR OPTICAL INTERCONNECTION 有权包含交联胶粘剂的复合物，预聚物，混合物和聚合物薄膜以及用于光学互连的波长公开(公告)号：US20160041306A1
公开(公告)日：2016-02-11
申请号：US14918617
申请日：2015-10-21
Inventor： Seung Koo PARK , Jung Jin JU , Suntak PARK , Jong-Moo LEE , Min-su KIM , Jin Tae KIM , Joong-Seon CHOE
IPC: G02B1/04 , C08F214/18
CPC classification number: G02B1/045 , C07C43/225 , C07C43/29 , C07C2601/14 , C07C2602/48 , C07D209/48 , C08F214/186 , C08G73/1042 , C08J5/18 , C08J2371/02 , C08J2379/08 , C08L23/02 , C08L79/08 , G02B6/02033 , G02B6/1221 , G02B6/138 , C08L2666/02 , C08L77/00
Abstract: An optical waveguide for optical interconnection including a polymer sheet comprising a crosslinked product of a prepolymer, the prepolymer prepared by condensation reaction between a first compound represented by the formula Ar—H, where Ar comprises (a) a crosslinkable moiety at one end, (b) a moiety selected from the group consisting of —O—, —S—, —COO—, —CO—, —COS—, —SO2—, and —NH—, and (c) one or two repeating units selected from the group consisting of: where A is carbon or nitrogen, and X is hydrogen or halogen; and a second compound consisting of an aromatic moiety.
Abstract translation: 一种用于光学互连的光波导，其包括聚合物片，其包含预聚物的交联产物，所述预聚物通过由式Ar-H表示的第一化合物之间的缩合反应制备，其中Ar包含（a）一端的可交联部分， b）选自-O - ， - S - ， - COO - ， - CO - ， - SO 2 - ， - SO 2 - 和-NH-的部分，和（c）一或两个选自 由以下组成：A为碳或氮，X为氢或卤素; 和由芳族部分组成的第二化合物。
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3.发明申请MEASURING DEVICE AND METHOD OF MEASURING SIGNAL TRANSMISSION TIME DIFFERENCE THEREOF 有权测量装置及其测量信号传输时间差异的方法公开(公告)号：US20140205280A1
公开(公告)日：2014-07-24
申请号：US13934589
申请日：2013-07-03
Inventor： Joong-Seon CHOE , Chun Ju YOUN , Jong-Hoi KIM , Duk Jun KIM , Yong-Hwan KWON , Kwang-Seong CHOI , Eun Soo NAM
IPC: H04B10/07
CPC classification number: H04B10/0779
Abstract: Provided is a method of measuring signal transmission time difference of a measuring device. The measuring device according to embodiments, by measuring a skew on two optical paths through signal delays of sufficient sizes for skew measurement on the optical paths, even a skew having a minute size can be measured within a measureable range.
Abstract translation: 提供了测量装置的信号传输时间差的测量方法。 根据实施例的测量装置可以在可测量的范围内测量通过在光路上经过足够尺寸的信号延迟的两个光路上的偏斜，甚至具有微小尺寸的偏斜。
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公开(公告)号：US20220066245A1
公开(公告)日：2022-03-03
申请号：US17464470
申请日：2021-09-01
Inventor： Kap-Joong KIM , Chun Ju YOUN , Young-Ho KO , Minchul KIM , Kyongchun LIM , Byung-Seok CHOI , Joong-Seon CHOE
Abstract: Provided is a light modulation device includes a substrate, a lower clad layer disposed on the substrate, a core layer disposed on the lower clad layer to extend in a first direction which is parallel to a top surface of the substrate, and an upper clad layer covering the core on the lower clad layer. The core layer includes a waveguide layer extending in the first direction; and photonic crystal structures disposed in the waveguide layer and periodically arranged along the first direction.
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公开(公告)号：US20210306077A1
公开(公告)日：2021-09-30
申请号：US17203186
申请日：2021-03-16
Inventor： Kyongchun LIM , Chun Ju YOUN , Young-Ho KO , Kap Joong KIM , Minchul KIM , Byung-seok CHOI , Joong-Seon CHOE
Abstract: Disclosed are a quantum information transmitter, a quantum communication system including the same, and an operating method of the quantum information transmitter. The quantum information transmitter includes a light source driver, a light source, and a light modulator. The light source driver generates a first light source driving signal having a first level and a second light source driving signal having a second level. The light source generates a first light signal having a first average number of photons in response to the first light source driving signal, and generates a second light signal having a second average number of photons in response to the second light source driving signal. The optical modulator modulates the first light signal to generate a target signal, and modulates the second light signal to generate a decoy signal.
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Patent Agency Ranking
公开(公告)号：US20210255385A1
公开(公告)日：2021-08-19
申请号：US17173681
申请日：2021-02-11
Inventor： Joong-Seon CHOE , Duk Jun KIM , Jong-Hoi KIM , Jonghyurk PARK , Won Seok HAN
IPC: G02B6/12 , G02B6/42 , G02B6/122 , H01L31/0232
Abstract: Provided is a waveguide photodetector including a semiconductor substrate, a first optical waveguide and a second optical waveguide, which are sequentially laminated on the semiconductor substrate, in which each of the first optical waveguide and the second optical waveguide includes a first portion and a second portion, and the first portion extends from the second portion in a first direction parallel to a top surface of the semiconductor substrate, a refractive index matching layer disposed on the second portion of the second optical waveguide, a clad layer disposed on the refractive index matching layer, and an absorber disposed between the refractive index matching layer and the clad layer. Here, the second optical waveguide has a first conductive-type, the clad layer has a second conductive-type opposite to the first conductive-type, and the refractive index matching layer includes a first semiconductor layer that is an intrinsic semiconductor layer.
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公开(公告)号：US20190353918A1
公开(公告)日：2019-11-21
申请号：US16415708
申请日：2019-05-17
Inventor： Kap-Joong KIM , Chun Ju YOUN , Heasin KO , Byung-Seok CHOI , Joong-Seon CHOE
Abstract: Provided is a polarization decomposition device. The polarization decomposition device includes a polarization beam splitter configured to split an optical signal into a first polarized light having a first polarization direction and a second polarized light having a second polarization direction different from the first polarized light, a phase shifter configured to delay a phase of the first polarized light, a polarization rotator configured to rotate the second polarized light so that the polarization direction of the second polarized light is changed, and an interference beam splitter configured to allow the first polarized light in which the phase is delayed and the second polarized light in which the polarization direction is rotated to interfere with each other and split them into a third polarized light and a fourth polarized light.
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8.发明公开公开(公告)号：US20230361884A1
公开(公告)日：2023-11-09
申请号：US18312995
申请日：2023-05-05
Inventor： Minchul KIM , Chun Ju YOUN , Kap-Joong KIM , Kyoungchun LIM , Byung Seok CHOI , Joong-Seon CHOE
Abstract: Provided are a beam tracking module, a free-space quantum communication device, and a free-space optical communication device. The beam tracking module for free-space quantum communication includes a controller configured to determine a divergence angle of a reference beam on the basis of divergence angle control data, a beam path control optical part configured to output the reference beam, and a beam transmitter configured to adjust the divergence angle through the beam path control optical part so that the reference beam having the determined divergence angle is output.
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公开(公告)号：US20230283459A1
公开(公告)日：2023-09-07
申请号：US17937325
申请日：2022-09-30
Inventor： Kyongchun LIM , Chun Ju YOUN , Joong-Seon CHOE , Minchul KIM , Byung-seok CHOI
IPC: H04L9/08
CPC classification number: H04L9/0852
Abstract: A quantum key distribution system using an RFI (reference frame independent) QKD (quantum key distribution) protocol includes a quantum channel transmitter that generates a first quantum signal including quantum information and provides the first quantum signal to an external device through a quantum channel, a first public channel transceiver that generates an optical signal including first additional information related to a QKD operation, and transmits and receives the optical signal through a public channel, a second public channel transceiver that receives the optical signal through the public channel and generates a measurement result by measuring a circular polarization component of the optical signal, and a quantum channel receiver that receives the first quantum signal through the quantum channel, generates a second quantum signal by correcting a polarization distortion of the first quantum signal based on the measurement result, and demodulates the quantum information from the second quantum signal.
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公开(公告)号：US20220141008A1
公开(公告)日：2022-05-05
申请号：US17488955
申请日：2021-09-29
Inventor： Kyongchun LIM , Chun Ju YOUN , Byung-seok CHOI , Young-Ho KO , Kap-Joong KIM , Minchul KIM , Ju Hee BAEK , Joong-Seon CHOE
IPC: H04L9/08
Abstract: Disclosed is a quantum key distribution system using an RFI (reference frame independent) QKD (quantum key distribution) protocol, which includes a first signal processing circuit that generates transmission basis information and transmission bit information, a quantum channel transmitter that generates a single photon or coherent light, and modulates the single photon or the coherent light based on the transmission basis information and the transmission bit information to generate a quantum signal, a quantum channel receiver that receives the quantum signal through a quantum channel and detects reception bit information from the quantum signal based on reception basis information, and a second signal processing circuit that generates the reception basis information, transmits the reception basis information to the first signal processing circuit through a public channel, and receives the transmission basis information from the first signal processing circuit through the public channel.
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