公开(公告)号：US20100150568A1

公开(公告)日：2010-06-17

申请号：US12538024

申请日：2009-08-07

Applicant: Joon Ki Lee ,  Hwan Seok Chung ,  Sae Kyoung Kang ,  Jyung Chan Lee ,  Kwangjoon Kim

Inventor： Joon Ki Lee ,  Hwan Seok Chung ,  Sae Kyoung Kang ,  Jyung Chan Lee ,  Kwangjoon Kim

IPC: H04B10/00

CPC classification number: H04B10/677

Abstract: An optical transceiver for optimizing transfer characteristic of an optical interferometer and a method of optimizing transfer characteristic of an optical interferometer of an optical transceiver are provided. It is possible to improve the transmission performance of the optical transceiver by optimizing the transfer characteristic of the optical interferometer included in an optical receiver of the optical transceiver which transmits and receives an optical signal in a phase modulation scheme.

Abstract translation: 提供一种用于优化光学干涉仪的传输特性的光收发器和优化光收发器的光干涉仪的传输特性的方法。 通过优化以相位调制方式发送和接收光信号的光收发器的光接收机中包括的光干涉仪的传输特性，可以提高光收发器的传输性能。

公开(公告)号：US20100150553A1

公开(公告)日：2010-06-17

申请号：US12551338

申请日：2009-08-31

Applicant: Sae-kyoung Kang ,  Sang Soo Lee ,  Tae-gon Noh ,  Kwangjoon Kim

Inventor： Sae-kyoung Kang ,  Sang Soo Lee ,  Tae-gon Noh ,  Kwangjoon Kim

IPC: H04J14/00 ,  H04L9/00

CPC classification number: H04B10/508 ,  H04L9/0858

Abstract: A method and apparatus for generating an optical short pulse for quantum cryptography communication is provided. The apparatus is incorporated as a module in an electronic integrated circuit chip, such as a field programmable gate array (FPGA) chip which performs quantum key distribution post-processing and open channel optical signal processing of a quantum cryptography system. The apparatus generates an electrical short pulse and converts the electrical short pulse into an optical short pulse, and it is possible to manufacture a compact apparatus for generating an optical short pulse for quantum cryptography communication.

Abstract translation: 提供了一种用于产生用于量子密码通信的光学短脉冲的方法和装置。 该装置作为模块结合在电子集成电路芯片中，例如执行量子密码系统的量子密钥分配后处理和开放信道光信号处理的现场可编程门阵列（FPGA）芯片。 该装置产生电短脉冲并将电短脉冲转换为光短脉冲，并且可以制造用于产生用于量子密码通信的光学短脉冲的紧凑装置。

公开(公告)号：US07639677B2

公开(公告)日：2009-12-29

申请号：US11152099

申请日：2005-06-15

Applicant: Joon Ki Lee ,  Jyung Chan Lee ,  Kwangjoon Kim

Inventor： Joon Ki Lee ,  Jyung Chan Lee ,  Kwangjoon Kim

IPC: H04J3/02

CPC classification number: H04J14/02 ,  H04J3/062 ,  H04J3/1617 ,  H04J2203/0094

Abstract: Provided is an optical transponder that receives a tributary signal such as a SDH/SONET signal, a GbE (Gigibit Ethernet) signal, and a SAN (Storage Area Network) signal in a WDM (Wavelength Division Multiplexing) transmission system and a SDH (Synchronous Digital Hierarchy)/SONET (Synchronous Optical Network) system, and more particularly, to an optical transponder having a switching function. The optical transponder having a switching function includes: a switch changing a data path of an input tributary signal from a plurality of channels (ports); an STM-64/OC-192 mapper/demapper mapping the tributary signal switched to a different data path by the switch to an STM-64/OC-192 signal or demapping the STM-64/OC-192 signal to the tributary signal; and a transmission delay time compensator compensating for a differential delay caused by a transmission route difference on an optical fiber link when the STM-64/OC-192 signal is demapped to the tributary signal.

Abstract translation: 提供了在WDM（波分复用）​​传输系统和SDH（同步）中接收诸如SDH / SONET信号，GbE（Gigabit Ethernet）信号和SAN（存储区域网络）信号的支路信号的光转发器 数字体系）/ SONET（同步光网络）系统，更具体地，涉及具有切换功能的光转发器。 具有切换功能的光转发器包括：切换多个信道（端口）的输入支路信号的数据路径的开关; 通过切换到STM-64 / OC-192信号或将STM-64 / OC-192信号解映射到支路信号的STM-64 / OC-192映射器/解映射器将通过切换到不同数据路径的支路信号进行映射， 以及传输延迟时间补偿器，当STM-64 / OC-192信号被解映射到支路信号时，补偿由光纤链路上的传输路由差引起的差分延迟。

公开(公告)号：US07385753B2

公开(公告)日：2008-06-10

申请号：US11010350

申请日：2004-12-14

Applicant: Hee Sang Chung ,  Sun Hyok Chang ,  Kwangjoon Kim

Inventor： Hee Sang Chung ,  Sun Hyok Chang ,  Kwangjoon Kim

IPC: H01S3/00

CPC classification number: H01S3/2375 ,  H01S3/06754 ,  H01S3/10007 ,  H01S3/302 ,  H01S5/1071 ,  H01S5/12 ,  H01S5/125 ,  H01S5/14 ,  H01S5/5072

Abstract: Provided is a hybrid optical amplifier using a gain-clamped semiconductor optical amplifier enabling Raman amplification. The hybrid optical amplifier comprises a spool of optical fiber used as transmission line in the optical communication, a GCSOA amplifying optical signal input via the optical fiber and generating a self-oscillation laser beam for gain-clamping through the gain medium, and a backward pumping Raman optical amplifier inducing Raman amplification by emitting the self-oscillation laser beam generated by the GCSOA into the optical fiber. Therefore, the Raman amplification can be obtained with a relatively simple structure using the GCSOA.

Abstract translation: 提供了一种使用拉曼放大器的增益钳位半导体光放大器的混合光放大器。 混合光放大器包括用作光通信中的传输线的光纤卷轴，经由光纤输入的GCSOA放大光信号，并通过增益介质产生用于增益钳位的自激振荡激光束，以及反向泵浦 拉曼光放大器通过将由GCSOA产生的自激振荡激光束发射到光纤中来诱导拉曼放大。 因此，使用GCSOA可以通过相对简单的结构获得拉曼放大。

公开(公告)号：US20080095171A1

公开(公告)日：2008-04-24

申请号：US11904178

申请日：2007-09-26

Applicant: Young Hwa Kim ,  Kwangjoon Kim

Inventor： Young Hwa Kim ,  Kwangjoon Kim

IPC: H04L12/56 ,  H04J3/22

CPC classification number: H04L41/12 ,  H04L45/00 ,  H04L67/14 ,  H04L67/142

Abstract: Provided is a method and system for confirming label switched path (LSP) connection in a global multi-protocol label switching (GMPLS)-based network. The method includes: collecting LSP hierarchy information; selecting one of a plurality of paths between first and second clients according to the LSP hierarchy information; and confirming the connection of the selected path.

Abstract translation: 提供了一种在全球多协议标签交换（GMPLS）的网络中确认标签交换路径（LSP）连接的方法和系统。 该方法包括：收集LSP层次信息; 根据LSP层次信息，选择第一和第二客户端之间的多条路径之一; 并确认所选路径的连接。

公开(公告)号：US20060133812A1

公开(公告)日：2006-06-22

申请号：US11134202

申请日：2005-05-20

Applicant: Jyung Lee ,  Joon Lee ,  Hyun Lee ,  Kwangjoon Kim

Inventor： Jyung Lee ,  Joon Lee ,  Hyun Lee ,  Kwangjoon Kim

IPC: H04B10/00

CPC classification number: G01M11/00

Abstract: Provided is an apparatus for testing the performance of an optical transceiver by referencing various performance clocks provided by an OTU2 signal connection transceiver and an STM-64/OC-192 signal. The apparatus for testing performance of an optical transceiver includes: a transmitter/receiver reference clock selector for selecting one of various transmitter/receiver reference clocks provided by an STM-64/OC-192 connection optical transceiver or an OTN connection optical transceiver; a transmitter test reference clock selection switch for selecting a receiver data synchronous clock provided by the transceivers or the selected transmitter/receiver reference clock as a transmitter test reference clock; and a receiver test reference clock selection switch for selecting a transmitter supervisory clock provided by the transceivers or the selected transmitter/receiver reference clock as a receiver test reference clock.

Abstract translation: 提供了一种用于通过参考由OTU2信号连接收发器和STM-64 / OC-192信号提供的各种性能时钟来测试光收发器的性能的装置。 用于测试光收发器性能的装置包括：用于选择由STM-64 / OC-192连接光收发器或OTN连接光收发器提供的各种发射机/接收机参考时钟之一的发射机/接收机参考时钟选择器; 发射机测试参考时钟选择开关，用于选择由收发器或选定的发射机/接收机参考时钟提供的接收机数据同步时钟作为发射机测试参考时钟; 以及接收机测试参考时钟选择开关，用于选择由收发器或选定的发射机/接收机参考时钟提供的发射机监控时钟作为接收机测试参考时钟。

公开(公告)号：US07054522B1

公开(公告)日：2006-05-30

申请号：US11137467

申请日：2005-05-26

Applicant: Jinsoo Han ,  Kwangjoon Kim

Inventor： Jinsoo Han ,  Kwangjoon Kim

IPC: G02B6/28

CPC classification number: H04J14/02

Abstract: This apparatus of bidirectional optical recirculation loop transmission enables bidirectional transmission system to be tested in the long transmission distance. Unidirectional optical recirculation loop is composed of two optical modulators and one 4-port optical coupler. Bidirectional optical recirculation loop is composed of four optical switches, one 4-port optical coupler and six optical circulators. Two optical circulators at the entrance (simultaneously exit) of the loop enable transmitted (received) signals to be added (dropped). Four optical circulators enable forward (reverse) signal to bypass the optical switch set for reverse (forward) signal in the inner optical loop. Forward (reverse) signal can be transmitted simultaneously with the reverse (forward) signal without interference. Two independent optical recirculation loops exist on the same fiber link in each direction.

Abstract translation: 这种双向光学循环回路传输装置使双向传输系统能够在较长的传输距离内进行测试。 单向光学循环回路由两个光学调制器和一个4端口光耦合器组成。 双向光学循环回路由四个光开关，一个4端口光耦合器和六个光循环器组成。 环路入口（同时出口）处的两个光环路器使能发送（接收）信号被添加（下降）。 四个光学循环器使得正向（反向）信号绕过内部光环路中的反向（正向）信号的光开关组。 正向（反向）信号可以与反向（正向）信号同时传输而不受干扰。 在相同的光纤链路上存在两个独立的光学循环回路，每个方向。

公开(公告)号：US20060110161A1

公开(公告)日：2006-05-25

申请号：US11103511

申请日：2005-04-12

Applicant: Yun Cho ,  Kwangjoon Kim ,  Hee Chung

Inventor： Yun Cho ,  Kwangjoon Kim ,  Hee Chung

IPC: H04J14/00

CPC classification number: H04J14/0226 ,  H04B10/071 ,  H04B10/27 ,  H04J14/0246 ,  H04J14/0247 ,  H04J14/025 ,  H04J14/0252 ,  H04J14/0282

Abstract: Provided are an apparatus and method for monitoring optical fibers of a passive optical network system including an optical line termination located in a central office, a remote node that is a local office, and optical network units on the subscriber side. The apparatus respectively allocates monitoring light wavelengths to optical network units such that optical fibers of the respective optical network units can be identified and monitored using the monitoring light wavelengths, combines a monitoring light having various wavelengths and a downward optical signal using the WDM coupler, and analyzes signal waveforms of the monitoring light having various wavelengths reflected from the optical network units, to detect the position of a defect generated on an optical line. Accordingly, it is possible to transmit optical signals and monitor the physical states of the optical fibers of the optical network units.

Abstract translation: 提供了一种用于监视无源光网络系统的光纤的装置和方法，所述无源光网络系统包括位于中心局的光线路终端，作为本地办公室的远程节点和在用户侧的光网络单元。 该装置分别将监控光波长分配给光网络单元，使得可以使用监视光波长来识别和监视各个光网络单元的光纤，使用WDM耦合器组合具有各种波长的监视光和向下的光信号，以及 分析具有从光网络单元反射的各种波长的监视光的信号波形，以检测在光线路上产生的缺陷的位置。 因此，可以发送光信号并监视光网络单元的光纤的物理状态。

公开(公告)号：US08014680B2

公开(公告)日：2011-09-06

申请号：US11935191

申请日：2007-11-05

Applicant: Joon Ki Lee ,  Jyung Chan Lee ,  Kwangjoon Kim

Inventor： Joon Ki Lee ,  Jyung Chan Lee ,  Kwangjoon Kim

IPC: H04B10/00

CPC classification number: H04B10/40 ,  H04L25/03343

Abstract: An optical transceiver which can effectively reduce optical output jitter when an error is made during designing and manufacturing of a printed circuit board (PCB), and a method of controlling optical output jitter using the optical transceiver are provided. The optical transceiver includes a transmitter unit including an equalizing (EQ) filter which can reduce jitter of a high speed electric signal; a control circuit which controls the EQ filter; a receiver unit which receives an optical signal; and a micro-controller which controls the transmitter unit and the receiver unit. Further included in the optical transceiver is an active type or passive type EQ filter and, in the case of the active type, the control circuit is used to control the filter, in order to compensate for high-frequency component of a high speed electric signal in the transmitter unit in order to reduce reflection or loss on the PCB, and thus deterministic optical output jitter occurring due to Inter-Symbol Interference (ISI) can be reduced.

Abstract translation: 提供了在印刷电路板（PCB）的设计和制造期间发生错误时有效降低光输出抖动的光收发器，以及使用该光收发器控制光输出抖动的方法。 光收发器包括一个发射单元，它包括均衡（EQ）滤波器，可以减少高速电信号的抖动; 控制EQ滤波器的控制电路; 接收单元，其接收光信号; 以及控制发射机单元和接收机单元的微控制器。 在光收发器中还包括有源型或无源型EQ滤波器，并且在有源类型的情况下，控制电路用于控制滤波器，以便补偿高速电信号的高频分量 在发射机单元中以减少PCB上的反射或损耗，因此可以减少由于符号间干扰（ISI）引起的确定性的光输出抖动。

公开(公告)号：US07848246B2

公开(公告)日：2010-12-07

申请号：US11904178

申请日：2007-09-26

Applicant: Young Hwa Kim ,  Kwangjoon Kim

Inventor： Young Hwa Kim ,  Kwangjoon Kim

IPC: H04J1/16

CPC classification number: H04L41/12 ,  H04L45/00 ,  H04L67/14 ,  H04L67/142

Abstract: Provided is a method and system for confirming label switched path (LSP) connection in a global multi-protocol label switching (GMPLS)-based network. The method includes: collecting LSP hierarchy information; selecting one of a plurality of paths between first and second clients according to the LSP hierarchy information; and confirming the connection of the selected path.

Abstract translation: 提供了一种在全球多协议标签交换（GMPLS）的网络中确认标签交换路径（LSP）连接的方法和系统。 该方法包括：收集LSP层次信息; 根据LSP层次信息，选择第一和第二客户端之间的多条路径之一; 并确认所选路径的连接。