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公开(公告)号：US20220416891A1
公开(公告)日：2022-12-29
申请号：US17846604
申请日：2022-06-22
Inventor： Seung-Hyun CHO , Joon Ki LEE
IPC: H04B10/2575 , H04B10/077
Abstract: A test device and method for testing a distributed feedback laser diode (DFB-LD) device for an optical transceiver of a radio over fiber (RoF) system examines the DFB-LD device based on an absolute limiting rating, an operating case environment, and a functional specification, in which the absolute limiting rating is a rating at which there is no fatal damage to the DFB-LD device during a short period of time when each limiting parameter is isolated and all other parameters are in a normal performance parameter, the operating case environment includes an operating temperature, and the functional specification includes parameters to be tested according to an operating condition for the functional specification.
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公开(公告)号：US20220308285A1
公开(公告)日：2022-09-29
申请号：US17540439
申请日：2021-12-02
Inventor： Dongjun SEO , Heuk PARK , Sanghwa YOO , Joon Ki LEE
IPC: G02B6/12 , H01L31/0232 , H01L31/028 , H01L31/105
Abstract: A silicon photonics-based photodetector (PD) includes a silicon layer on which doped layers of different types are formed on a surface based on a first spacing based on a center line of an optical waveguide through which an optical signal moves, a germanium layer being stacked on an upper part of the silicon layer and formed with doped layers of different types on a surface based on a second spacing based on the center line of the optical waveguide, and a metal electrode configured to generate an electric field by being in contact with the doped layers of the silicon layer and the germanium layer.
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公开(公告)号：US20220137477A1
公开(公告)日：2022-05-05
申请号：US17377658
申请日：2021-07-16
Inventor： Sanghwa YOO , Heuk PARK , Joon Ki LEE
Abstract: Disclosed is a silicon photonics-based optical transmission apparatus. The apparatus includes an optical modulator chip of a ground-signal-ground (GSG) electrode array including two phase shifters for differential driving, a sub-substrate including a metal electrode of a periodic pattern to connect two ground metal electrodes to each other at a GSG electrode connected to each of the two phase shifters, and a solder bump having a same periodic pattern as the metal electrode of the sub-substrate to connect the ground metal electrodes of the optical modulator chip and the metal electrode of the periodic pattern of the sub-substrate.
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34.发明申请公开(公告)号：US20190158188A1
公开(公告)日：2019-05-23
申请号：US16023187
申请日：2018-06-29
Inventor： Jie Hyun LEE , Sun Hyok CHANG , Joon Young HUH , Sae-Kyoung KANG , Joon Ki LEE
IPC: H04B10/58
Abstract: An optical signal transmission apparatus generates a multi-level optical signal from a multi-level electric signal. The optical signal transmission apparatus detects, based on a supervisory signal generated from an optical signal, an electric-to-optical (E/O) conversion characteristic of an E/O converter configured to convert an electric signal into an optical signal. For example, when the E/O converter generates a multi-level optical signal from a multi-level electric signal based on a bias signal, the optical signal transmission apparatus determines a correspondence relationship between the bias signal and the optical signal. The optical signal transmission apparatus adjusts a use range of intensities of the bias signal based on the determined correspondence relationship so that the E/O converter may linearly operate.
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公开(公告)号：US20140183344A1
公开(公告)日：2014-07-03
申请号：US13973202
申请日：2013-08-22
Inventor： Joon Ki LEE , Sae-Kyoung KANG , Joon Young HUH
IPC: G02B6/43
CPC classification number: G02B6/4224 , G02B6/4214 , G02B6/4243 , G02B6/4249 , Y10T29/4978
Abstract: Provided are a hybrid optical coupling module and a manufacturing method thereof.The hybrid optical coupling module includes an optical unit configured to include an optical transmission means that transmits an optical signal, and an array lens that is bonded at a point where the optical signal of the optical transmission means is output and focuses the output optical signal, and an electrical unit configured to receive the optical signal focused through the array lens and convert the received optical signal into an electrical signal. Here, an alignment mark is formed on the optical transmission means and the array lens so that the array lens is bonded at the point where the optical signal of the optical transmission means is output.
Abstract translation: 提供了一种混合光耦合模块及其制造方法。 混合光耦合模块包括：光学单元，被配置为包括发送光信号的光传输装置和结合在光传输装置的光信号的点处的阵列透镜，并对输出光信号进行聚焦; 以及电单元，被配置为接收通过阵列透镜聚焦的光信号，并将接收到的光信号转换成电信号。 这里，在光传输装置和阵列透镜上形成对准标记，使得阵列透镜在输出光传输装置的光信号的点处接合。
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Patent Agency Ranking
公开(公告)号：US20240303116A1
公开(公告)日：2024-09-12
申请号：US18601084
申请日：2024-03-11
Inventor： Ji Wook YOUN , Daeub KIM , Bup Joong KIM , Chanho PARK , Jongtae SONG , Joon Ki LEE , Kyeong-Eun HAN
CPC classification number: G06F9/5016 , G06F13/4221 , G06F2209/503 , G06F2213/0026
Abstract: Provided are a processing system and method for increasing memory resources. The method includes generating, by a host node, a device memory resource request and transmitting the device memory resource request to a network manager, providing, by the network manager, memory node information and connection information to the host node in response to the memory resource request, generating, by the host node, an optical link frame corresponding to the request, connecting, by the network manager, a memory node whose memory resources are available and the host node by controlling an optical switch, and communicating, by the host node and the memory node of which memory resources are available, with each other using a light signal corresponding to the optical link frame.
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公开(公告)号：US20240297666A1
公开(公告)日：2024-09-05
申请号：US18590531
申请日：2024-02-28
Inventor： In Ki HWANG , Hun Sik KANG , Joon Ki LEE
CPC classification number: H03M13/1177 , H03M13/616
Abstract: Proposed are an apparatus and a method for designing codes by using polar and algebraic codes. The operating method of the apparatus for designing a code may include a step of identifying a polar code defined as at least one information set, a step of identifying a parity matrix of the polar code, a step of identifying a vector corresponding to the polar code, a step of identifying a row that is representable in a way by linearly combining each row of the parity matrix, a step of identifying a specific binarization matrix in which the representable row does not exist, a step of generating a transformed parity matrix by adding the specific binarization matrix to the parity matrix and a step of generating a pre-code corresponding to the transformed parity matrix.
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38.发明公开公开(公告)号：US20240094121A1
公开(公告)日：2024-03-21
申请号：US18307715
申请日：2023-04-26
Inventor： Won Kyoung LEE , Eon-sang KIM , Sang Rok MOON , Joon Ki LEE , Seung-Hyun CHO
IPC: G01N21/3581 , G01N21/3577
CPC classification number: G01N21/3581 , G01N21/3577 , A61B5/0507
Abstract: A method of detecting a biomolecule, a computing device performing the method, and a biomolecule detection system therefor are provided. The method includes receiving a terahertz signal that passed deionized water or reference material, receiving a terahertz signal that passed a target including a predetermined biomolecule, extracting a digital modulation characteristic for the received terahertz signal that passed the deionized water and the received terahertz signal that passed the target, and detecting the predetermined biomolecule included in the target by analyzing the extracted digital modulation characteristic, wherein the received terahertz signal that passed the deionized water and the received terahertz signal that passed the target are generated using a digitally modulated optical signal based on a transmission speed determined based on kinematics of the predetermined biomolecule.
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公开(公告)号：US20230261756A1
公开(公告)日：2023-08-17
申请号：US18096638
申请日：2023-01-13
Inventor： Joon Young HUH , Sae Kyoung KANG , Hun Sik KANG , Sang Rok MOON , Joon Ki LEE
IPC: H04B10/572 , H04B10/58
CPC classification number: H04B10/572 , H04B10/58
Abstract: Disclosed herein is an optical transmitter for generating a vestigial sideband (VSB) optical signal. The optical transmitter includes: a modulator configured based on a photonic integrated chip (PIC); an optical fiber block; and a lensed thin film filter implemented between the modulator configured based on the PIC and the optical fiber block. The PIC includes at least one grating coupler, and the lensed thin film filter is disposed so that an angle of an optical signal emitted from a first grating coupler of the PIC coincides with an angle of incident (AOI) of the lensed thin film filter to design the first grating coupler and the lensed thin film filter.
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公开(公告)号：US20230144656A1
公开(公告)日：2023-05-11
申请号：US17858187
申请日：2022-07-06
Inventor： Jongtae SONG , Daeub KIM , Ji Wook YOUN , Kyeong-Eun HAN , Joon Ki LEE
IPC: G06F12/06
CPC classification number: G06F12/0607
Abstract: Provided are a memory access method and a server for performing the same. A memory access method performed by an optical interleaver included in a server includes receiving a request message from a requester processing engine included in the server, setting receiving buffers corresponding to different wavelengths corresponding to the number of external memory/storage devices connected to the server, multiplexing the same request message at the different wavelengths according to a wavelength division multiplexing (WDM) scheme, and transmitting the multiplexed request messages to the respective external memory/storage devices, wherein an address of a virtual memory managed by the server is separated and stored according to an interleaving scheme by a responder included in each of the external memory/storage devices.
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