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公开(公告)号：US20240380492A1
公开(公告)日：2024-11-14
申请号：US18660145
申请日：2024-05-09
Inventor： Sanghwa YOO , Heuk PARK , Joon Ki LEE
IPC: H04B10/50 , G02F1/21 , G02F1/225 , H04B10/548
Abstract: A silicon photonics transmitter and a method therefor are disclosed. The silicon photonics optical transmitter includes a Mach-Zehnder modulator, a plurality of optical couplers, a plurality of photodetectors, a monitor configured to measure an input optical power based on a sum of photocurrents or photovoltages corresponding to the plurality of photodetectors, and a modulator controller configured to control a voltage supplied to the Mach-Zehnder modulator based on a difference between the photocurrents or the photovoltages corresponding to the plurality of photodetectors.
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2.发明申请TUNABLE OPTICAL NETWORK UNIT FOR MULTI-WAVELENGTH PASSIVE OPTICAL NETWORK SYSTEM AND OPERATING METHOD THEREOF 有权用于多波长无源光网络系统的可控光网络单元及其操作方法公开(公告)号：US20160020868A1
公开(公告)日：2016-01-21
申请号：US14694224
申请日：2015-04-23
Inventor： Jie Hyun LEE , Heuk PARK , Jyung Chan LEE , Sang Soo LEE
IPC: H04J14/02
CPC classification number: H04J14/0278 , H04B10/272 , H04J14/023 , H04J14/0241
Abstract: A tunable optical network unit (ONU) for a multi-wavelength passive optical network (MW PON) system and an operation method thereof are provided. The tunable ONU includes a cyclic tunable filter configured to have cyclic wavelength transmission properties that allow all wavelength channels of both a downstream signal and an upstream signal and to vary a wavelength to pass therethrough; a wavelength splitter configured to split an upstream signal wavelength band and a downstream signal wavelength band; a photodetector element configured to detect a downstream signal that is transmitted through the wavelength splitter, passing through the cyclic tunable filter which is aligned to a specific downstream signal wavelength channel; and a tunable transmitter configured to output to the wavelength transmitter an upstream signal of a wavelength channel that is determined based on an aligned downstream signal wavelength channel of the cyclic tunable filter.
Abstract translation: 提供了一种用于多波长无源光网络（MW PON）系统的可调谐光网络单元（ONU）及其操作方法。 可调谐ONU包括循环可调滤波器，其被配置为具有允许下行信号和上行信号的所有波长信道并且使波长变化通过的循环波长传输特性; 波长分离器，被配置为分离上游信号波长带和下游信号波长带; 光检测器元件，被配置为检测通过波长分离器传输的下行信号，通过与特定下行信号波长信道对准的循环可调滤波器; 以及可调谐发射器，被配置为向所述波长发射器输出基于所述循环可调滤波器的对准的下行信号波长信道确定的波长信道的上行信号。
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公开(公告)号：US20230068004A1
公开(公告)日：2023-03-02
申请号：US17545063
申请日：2021-12-08
Inventor： Sanghwa YOO , Sooyeon KIM , Heuk PARK , Jyung Chan LEE , Joon Ki LEE
Abstract: A silicon photonics-based optical modulator is disclosed. The optical modulator includes first radio frequency (RF) metal electrodes that operate as a ground, phase shifters disposed between the first RF metal electrodes for optically modulating an optical signal transmitted along an optical waveguide, second RF metal electrodes disposed between the phase shifters for providing an RF electrical signal received from a driving driver located outside of the optical modulator through one end, resistor-inductors (RL) connected to another end of the second RF metal electrodes, an inductive line disposed between the RLs and a power supply for applying a bias voltage to the optical modulator and the driving driver, and a silicon capacitor disposed between the RLs and the power supply for preventing a degradation of an RF response characteristic of the silicon photonics-based optical modulator caused by the inductive line.
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公开(公告)号：US20210141157A1
公开(公告)日：2021-05-13
申请号：US17094465
申请日：2020-11-10
Inventor： Sanghwa YOO , Sae-Kyoung KANG , Heuk PARK , Joon Young HUH , Jongtae SONG , Joon Ki LEE
Abstract: An optical coupling method and apparatus are disclosed. The optical coupling method improve the speed of optical alignment between an optical fiber and a grating coupler (GC) of an optical coupling apparatus for a characteristic test of a silicon photonic integrated circuit (Si-PIC) chip by using a reflective grating couplers disposed on the Si-PIC chip.
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公开(公告)号：US20180123723A1
公开(公告)日：2018-05-03
申请号：US15798807
申请日：2017-10-31
Inventor： Han Hyub LEE , Heuk PARK , Hwan Seok CHUNG
IPC: H04J14/02 , H04B10/27 , H04B10/572
CPC classification number: H04J14/0227 , H04B10/27 , H04B10/572 , H04J14/0241 , H04J14/0282 , H04J14/08
Abstract: Wavelength channels used in the optical network system are classified into downstream channels used to transmit optical signals from an optical line terminal (OLT) to an optical network unit (ONU) and upstream channels that are used to transmit optical signals from the ONU to the OLT. The wavelength channels are included in an O-band and may not overlap each other. One of the upstream channels are allocated to a wavelength band (for example, a zero-dispersion window) in which a four-wave mixing occurs. A wavelength spacing between the upstream channels and the downstream channels is determined based on a performance of separating the upstream channels and the downstream channels in a bidirectional optical sub assembly (BOSA) of the ONU. Also, a wavelength spacing between the downstream channels is determined based on a performance of separating the downstream channels in the BOSA.
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Patent Agency Ranking
公开(公告)号：US20210258778A1
公开(公告)日：2021-08-19
申请号：US17123588
申请日：2020-12-16
Inventor： Joonyoung KIM , Sang Rok MOON , Heuk PARK , Minkyu SUNG , Seung-Hyun CHO
IPC: H04W12/033 , G06N3/04 , G06N3/08 , G06N20/20
Abstract: A secure communication method and an apparatus performing the same are disclosed. The communication method includes receiving a signal encrypted based on at least one attractor and decrypting a security signal received using a neural network trained based on a training signal.
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公开(公告)号：US20160216446A1
公开(公告)日：2016-07-28
申请号：US15005159
申请日：2016-01-25
Inventor： Sae Kyoung KANG , Heuk PARK , Sang Soo LEE
CPC classification number: G02B6/12004 , G02B6/4291 , G02B2006/12107 , G02B2006/12123 , G02B2006/12126
Abstract: An apparatus for monitoring an optical signal includes a light absorbing layer formed on an optical waveguide consisting of a core layer and upper and lower cladding layers; and a photodiode comprising electrodes arranged on both the optical waveguide and the light absorbing layer.
Abstract translation: 一种用于监视光信号的装置包括形成在由芯层和上下包层组成的光波导上的光吸收层; 以及光电二极管，包括布置在光波导和光吸收层两者上的电极。
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公开(公告)号：US20150215914A1
公开(公告)日：2015-07-30
申请号：US14605278
申请日：2015-01-26
Inventor： Seung Hyun CHO , Kyeong Hwan DOO , Bin Yeong YOON , Heuk PARK , Sang Soo LEE , Jong Hyun LEE
IPC: H04W72/04 , H04W28/10 , H04L12/721
CPC classification number: H04W28/10 , H04L41/0816 , H04W24/08
Abstract: A software-defined networking (SDN) method. The SDN method according to an exemplary embodiment may be used in managing and operating SDN-based network resources in an optical communications network, a fixed mobile convergence subscriber network, a wired broadband subscriber network, a distributed mobile communications base station network, etc.
Abstract translation: 一种软件定义网络（SDN）方法。 根据示例性实施例的SDN方法可以用于管理和操作光通信网络中的基于SDN的网络资源，固定移动融合用户网络，有线宽带用户网络，分布式移动通信基站网络等。
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公开(公告)号：US20250107216A1
公开(公告)日：2025-03-27
申请号：US18893820
申请日：2024-09-23
Inventor： SangHwa YOO , Heuk PARK , Joon Ki LEE
Abstract: A high-density capacitor and a method for manufacturing the same are disclosed. The high-density capacitor includes a metal-oxide-semiconductor (MOS) capacitor having a silicon layer with a dopant concentration of at least 1×1020 cm-3; a first dielectric layer formed on above the silicon layer, and a first metal layer formed above the first dielectric layer.
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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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