公开(公告)号：US20110008059A1

公开(公告)日：2011-01-13

申请号：US12643087

申请日：2009-12-21

Applicant: Sun-hyok Chang ,  Hwan-seok Chung ,  Kwang-joon Kim

Inventor： Sun-hyok Chang ,  Hwan-seok Chung ,  Kwang-joon Kim

IPC: H04B10/06 ,  H03H7/30

CPC classification number: H04B10/25073 ,  H04B10/2569 ,  H04B10/60 ,  H04B10/611 ,  H04B10/6161 ,  H04B10/6162

Abstract: Disclosed are a digital equalization apparatus for a coherent optical receiver and a digital equalization method for a coherent optical receiver, capable of compensating for chromatic dispersion and polarization impairment through a digital signal processing, and capable of performing a clock recovery and a data recovery through a digital symbol synchronization. The digital equalization apparatus and the method compensate for various impairments occurring on an optical path in a digital manner and achieve synchronization through a simple structure.

Abstract translation: 公开了一种用于相干光接收机的数字均衡装置和用于相干光接收机的数字均衡方法，其能够通过数字信号处理补偿色散和极化损伤，并且能够通过一个数字信号处理器执行时钟恢复和数据恢复 数字符号同步。 数字均衡装置和方法以数字方式补偿在光路上发生的各种损伤，并通过简单的结构实现同步。

公开(公告)号：US20100150576A1

公开(公告)日：2010-06-17

申请号：US12610985

申请日：2009-11-02

Applicant: Hwan-seok Chung ,  Sun-hyok Chang ,  Kwang-joon Kim

Inventor： Hwan-seok Chung ,  Sun-hyok Chang ,  Kwang-joon Kim

IPC: H04B10/04

CPC classification number: H04B10/505 ,  G02F2001/212 ,  H04B10/5561

Abstract: An optical transmitting apparatus is disclosed. The optical transmitting apparatus outputs a signal having the same phase characteristics as a Return-to-Zero Differential Phase-Shift-Keying (RZ-DPSK) signal by using a single phase modulator. Accordingly, it is possible to generate RZ-DPSK signals without using a separate RZ modulator.

Abstract translation: 公开了一种光发射装置。 光发送装置通过使用单相调制器输出具有与归零差分相移键控（RZ-DPSK）信号相同的相位特性的信号。 因此，可以在不使用单独的RZ调制器的情况下产生RZ-DPSK信号。

公开(公告)号：US20100142964A1

公开(公告)日：2010-06-10

申请号：US12581797

申请日：2009-10-19

Applicant: Sun-hyok Chang ,  Hwan-seok Chung ,  Sang-soo Lee ,  Kwang-joon Kim

Inventor： Sun-hyok Chang ,  Hwan-seok Chung ,  Sang-soo Lee ,  Kwang-joon Kim

IPC: H04B10/04 ,  H04B10/00 ,  H04B10/12

CPC classification number: H04B10/50575 ,  H04B10/5053

Abstract: An optical transmission apparatus for high-speed optical signal transmission is provided. The optical transmission apparatus includes an optical modulator which includes first and second modulators of a Mach-Zehnder (MZ) interferometer type which are connected in parallel, and an output stabilizer which controls biases for the first modulator, the second modulator and the optical modulator and stabilizes a final output optical signal of the optical modulator. The optical transmission apparatus can perform a stable optical signal output.

Abstract translation: 提供了一种用于高速光信号传输的光传输装置。 光传输装置包括光调制器，其包括并联连接的马赫 - 曾德（MZ）干涉仪类型的第一和第二调制器和控制第一调制器，第二调制器和光调制器的偏置的输出稳定器，以及 稳定光调制器的最终输出光信号。 光传输装置可以执行稳定的光信号输出。

公开(公告)号：US20090080892A1

公开(公告)日：2009-03-26

申请号：US12121435

申请日：2008-05-15

Applicant: Sun-hyok Chang ,  Hwan-seok Chung ,  Sang-soo Lee ,  Young-hwa Kim ,  Kwang-joon Kim

Inventor： Sun-hyok Chang ,  Hwan-seok Chung ,  Sang-soo Lee ,  Young-hwa Kim ,  Kwang-joon Kim

IPC: H04J14/02

CPC classification number: H04J14/0297 ,  H04J14/0227 ,  H04J14/0246 ,  H04J14/025

Abstract: A network node and method for guaranteeing the role of an optical supervisory channel (OSC) in an optical transport network (OTN) are provided. In the network node, at least two OSC units are multiplexed, one of the OSC units is set as a main unit, the other OSC unit is set as an auxiliary unit; and the auxiliary unit is activated when the main unit cannot be operated. Thereby, the network node can guarantee the stable role of the OSC.

Abstract translation: 提供了一种用于保证光传输网络（OTN）中的光监控信道（OSC）的作用的网络节点和方法。 在网络节点中，至少两个OSC单元被复用，其中一个OSC单元被设置为主单元，另一个OSC单元被设置为辅助单元; 并且当主机不能操作时，辅助单元被激活。 因此，网络节点可以保证OSC的稳定作用。

公开(公告)号：US08406625B2

公开(公告)日：2013-03-26

申请号：US12486642

申请日：2009-06-17

Applicant: Hwan-seok Chung ,  Sun-hyok Chang ,  Sang-soo Lee ,  Kwang-joon Kim

Inventor： Hwan-seok Chung ,  Sun-hyok Chang ,  Sang-soo Lee ,  Kwang-joon Kim

IPC: H04J14/00

CPC classification number: H04Q11/0062 ,  H04J14/0204 ,  H04J14/0205 ,  H04J14/0209 ,  H04J14/0212 ,  H04J14/0217 ,  H04J14/0291 ,  H04J14/0295 ,  H04J14/0297 ,  H04Q2011/0011 ,  H04Q2011/0015 ,  H04Q2011/0081

Abstract: Provided is an optical network in which a wavelength division multiplexing-based optical transmission scheme is implemented. An apparatus for cross-connecting an optical path includes a path switch including a plurality of input terminals receiving optical signals from other nodes, and a plurality of output terminals sending the optical signals to the other nodes, the path switch switching the path of the optical signal so that the optical signal input via one of the input terminals is output to one of the output terminals; and a wavelength converter converting a wavelength of the optical signal input via the input terminal and outputting the wavelength-converted optical signal to the output terminal according to a switching result of the path switch. Thus, inefficient use of a network resource due to wavelength collision can be prevented, the path can be automatically cross-connected and thus quickly established, path switching and branch combination can be performed irrespective of wavelength, and switching can be performed irrespective of direction.

Abstract translation: 提供了实现基于波分复用的光传输方案的光网络。 用于交叉连接光路的装置包括：路径开关，其包括从其他节点接收光信号的多个输入端子，以及将光信号发送到其他节点的多个输出端子，路径开关切换光学路径 信号，使得经由一个输入端子输入的光信号被输出到输出端之一; 以及波长转换器，其经由所述输入端子转换输入的所述光信号的波长，并且根据所述路径切换的切换结果将所述波长转换的光信号输出到所述输出端子。 因此，可以防止由于波长碰撞导致的网络资源的低效使用，路径可以自动交叉连接并因此快速建立，路径切换和分支组合可以与波长无关地执行，并且可以不考虑方向进行切换。

公开(公告)号：US08260154B2

公开(公告)日：2012-09-04

申请号：US12643087

申请日：2009-12-21

Applicant: Sun-hyok Chang ,  Hwan-seok Chung ,  Kwang-joon Kim

Inventor： Sun-hyok Chang ,  Hwan-seok Chung ,  Kwang-joon Kim

IPC: H04B10/06

CPC classification number: H04B10/25073 ,  H04B10/2569 ,  H04B10/60 ,  H04B10/611 ,  H04B10/6161 ,  H04B10/6162

Abstract: Disclosed are a digital equalization apparatus for a coherent optical receiver and a digital equalization method for a coherent optical receiver, capable of compensating for chromatic dispersion and polarization impairment through a digital signal processing, and capable of performing a clock recovery and a data recovery through a digital symbol synchronization. The digital equalization apparatus and the method compensate for various impairments occurring on an optical path in a digital manner and achieve synchronization through a simple structure.

Abstract translation: 公开了一种用于相干光接收机的数字均衡装置和用于相干光接收机的数字均衡方法，其能够通过数字信号处理补偿色散和极化损伤，并且能够通过一个数字信号处理器执行时钟恢复和数据恢复 数字符号同步。 数字均衡装置和方法以数字方式补偿在光路上发生的各种损伤，并通过简单的结构实现同步。

公开(公告)号：US20100092172A1

公开(公告)日：2010-04-15

申请号：US12486642

申请日：2009-06-17

Applicant: Hwan-seok Chung ,  Sun-hyok Chang ,  Sang-soo Lee ,  Kwang-joon Kim

Inventor： Hwan-seok Chung ,  Sun-hyok Chang ,  Sang-soo Lee ,  Kwang-joon Kim

IPC: H04J14/00

CPC classification number: H04Q11/0062 ,  H04J14/0204 ,  H04J14/0205 ,  H04J14/0209 ,  H04J14/0212 ,  H04J14/0217 ,  H04J14/0291 ,  H04J14/0295 ,  H04J14/0297 ,  H04Q2011/0011 ,  H04Q2011/0015 ,  H04Q2011/0081

Abstract: Provided is an optical network in which a wavelength division multiplexing-based optical transmission scheme is implemented. An apparatus for cross-connecting an optical path includes a path switch including a plurality of input terminals receiving optical signals from other nodes, and a plurality of output terminals sending the optical signals to the other nodes, the path switch switching the path of the optical signal so that the optical signal input via one of the input terminals is output to one of the output terminals; and a wavelength converter converting a wavelength of the optical signal input via the input terminal and outputting the wavelength-converted optical signal to the output terminal according to a switching result of the path switch. Thus, inefficient use of a network resource due to wavelength collision can be prevented, the path can be automatically cross-connected and thus quickly established, path switching and branch combination can be performed irrespective of wavelength, and switching can be performed irrespective of direction.

Abstract translation: 提供了实现基于波分复用的光传输方案的光网络。 用于交叉连接光路的装置包括：路径开关，其包括从其他节点接收光信号的多个输入端子，以及将光信号发送到其他节点的多个输出端子，路径开关切换光学路径 信号，使得经由一个输入端子输入的光信号被输出到输出端之一; 以及波长转换器，其经由所述输入端子转换输入的所述光信号的波长，并且根据所述路径切换的切换结果将所述波长转换的光信号输出到所述输出端子。 因此，可以防止由于波长碰撞导致的网络资源的低效使用，路径可以自动交叉连接并因此快速建立，路径切换和分支组合可以与波长无关地执行，并且可以不考虑方向进行切换。