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1. 发明申请

US20100142971A1 APPARATUS FOR SYNCHRONIZING DIGITAL SIGNALS OF COHERENT OPTICAL RECEIVER 审中-公开
标题翻译：同步光接收机的数字信号的设备
公开(公告)号：US20100142971A1
公开(公告)日：2010-06-10
申请号：US12628920
申请日：2009-12-01
申请人： Sun-hyok Chang , Hwan-seok Chung , Kwang-joon Kim
发明人： Sun-hyok Chang , Hwan-seok Chung , Kwang-joon Kim
IPC分类号： H04B10/00 , H04B10/06
CPC分类号： H04B10/614 , H04B10/61 , H04B10/611 , H04B10/6164 , H04B10/6165
摘要： Provided is a digital signal synchronization device of a coherent optical receiver. The digital signal synchronization device includes a digital signal processing unit to perform synchronization on a digital signal of an output optical signal generated by interfering an optical signal received through an optical fiber with an optical signal of laser output from a local oscillator and to perform decoding using the synchronized digital signal, and a digital signal managing unit to monitor the digital signal processing unit to output data of the optical signal normally, which has been received through the optical fiber, according to the synchronized digital signal.
摘要翻译：提供了一种相干光接收机的数字信号同步装置。数字信号同步装置包括数字信号处理单元，用于对通过光纤接收的光信号与从本地振荡器输出的激光的光信号进行干扰而产生的输出光信号的数字信号进行同步，并且使用同步数字信号和数字信号管理单元，用于监视数字信号处理单元，以根据同步的数字信号正常地输出已经通过光纤接收的光信号的数据。

2. 发明申请

US20090060504A1 APPARATUS AND METHOD FOR PROTECTION SWITCHING OF OPTICAL CHANNEL 失效
标题翻译：光通道保护切换装置及方法
公开(公告)号：US20090060504A1
公开(公告)日：2009-03-05
申请号：US12053400
申请日：2008-03-21
申请人： Sun-hyok Chang , Hwan-seok Chung , Sang-soo Lee , Kwang-joon Kim
发明人： Sun-hyok Chang , Hwan-seok Chung , Sang-soo Lee , Kwang-joon Kim
IPC分类号： H04J14/02
CPC分类号： H04J14/029 , H04J14/0284
摘要： An apparatus and method for protection switching of an optical channel at each node in an optical network based on wavelength division multiplexing optical transmission technology are provided. The method can be applied to any node having at least two optical fiber inputs and outputs. The apparatus includes: a splitter receiving an electrical signal and splitting the received electrical signal into a plurality of electrical signals which are substantially identical to the received electrical signal; an output switching unit selecting output paths of the electrical signals split by the splitter according to an optical channel path control command of the optical network; and a plurality of optical transponders being assigned to the respective output paths of the electrical signals, converting the electrical signal input by the selection of the output switching unit to an optical signal, and transmitting the converted optical signal to another node of the optical network.
摘要翻译：提供了一种基于波分复用光传输技术在光网络中的每个节点处保护光信道切换的装置和方法。该方法可以应用于具有至少两个光纤输入和输出的任何节点。该装置包括：分离器，其接收电信号并将接收到的电信号分解为与所接收的电信号基本相同的多个电信号; 输出切换单元，根据光网络的光信道路径控制指令，选择由分路器分割的电信号的输出路径; 以及多个光转发器被分配给电信号的相应输出路径，通过输出切换单元的选择将输入的电信号转换为光信号，并将转换的光信号传输到光网络的另一个节点。

3. 发明授权

US08036527B2 Apparatus and method for protection switching of optical channel 失效
标题翻译：光通道保护切换装置及方法
公开(公告)号：US08036527B2
公开(公告)日：2011-10-11
申请号：US12053400
申请日：2008-03-21
申请人： Sun-hyok Chang , Hwan-seok Chung , Sang-soo Lee , Kwang-joon Kim
发明人： Sun-hyok Chang , Hwan-seok Chung , Sang-soo Lee , Kwang-joon Kim
IPC分类号： G02F1/00 , G02F2/00 , H01S3/00 , H04B10/00 , H04J14/00
CPC分类号： H04J14/029 , H04J14/0284
摘要： An apparatus and method for protection switching of an optical channel at each node in an optical network based on wavelength division multiplexing optical transmission technology are provided. The method can be applied to any node having at least two optical fiber inputs and outputs. The apparatus includes: a splitter receiving an electrical signal and splitting the received electrical signal into a plurality of electrical signals which are substantially identical to the received electrical signal; an output switching unit selecting output paths of the electrical signals split by the splitter according to an optical channel path control command of the optical network; and a plurality of optical transponders being assigned to the respective output paths of the electrical signals, converting the electrical signal input by the selection of the output switching unit to an optical signal, and transmitting the converted optical signal to another node of the optical network.
摘要翻译：提供了一种基于波分复用光传输技术在光网络中的每个节点处保护光信道切换的装置和方法。该方法可以应用于具有至少两个光纤输入和输出的任何节点。该装置包括：分离器，其接收电信号并将接收到的电信号分解为与所接收的电信号基本相同的多个电信号; 输出切换单元，根据光网络的光信道路径控制指令，选择由分路器分割的电信号的输出路径; 以及多个光转发器被分配给电信号的相应输出路径，通过输出切换单元的选择将输入的电信号转换为光信号，并将转换的光信号传输到光网络的另一个节点。

4. 发明授权

US08224190B2 Channel assignment method and apparatus for wavelength-division-multiplexed transmission system 有权
标题翻译：用于波分复用传输系统的信道分配方法和装置
公开(公告)号：US08224190B2
公开(公告)日：2012-07-17
申请号：US12618579
申请日：2009-11-13
申请人： Hwan-seok Chung , Sun-hyok Chang , Sang-soo Lee , Kwang-joon Kim
发明人： Hwan-seok Chung , Sun-hyok Chang , Sang-soo Lee , Kwang-joon Kim
IPC分类号： H04B10/04
CPC分类号： H04B10/2557 , H04J14/0224 , H04J14/0257 , H04J14/026 , H04J14/0279
摘要： Provided is a channel assignment method in a wavelength-division-multiplexed transmission system. The channel assignment method includes obtaining information about signal modulation schemes from a plurality of optical transmitters, and assigning channels to the respective optical transmitters in consideration of the obtained information about the signal modulation schemes. Accordingly, in transmission of channels of different modulation formats, cross phase modulation is minimized, thereby reducing inter-channel interference.
摘要翻译：提供了一种波分复用传输系统中的信道分配方法。信道分配方法包括从多个光发射机获取关于信号调制方案的信息，并且考虑所获得的关于信号调制方案的信息，向各个光发射机分配信道。因此，在传输不同调制格式的信道时，交叉相位调制被最小化，从而减少信道间干扰。

5. 发明申请

US20110008059A1 DIGITAL EQUALIZATION APPARATUS AND METHOD FOR COHERENT OPTICAL RECEIVER 失效
标题翻译：数字平均化装置和相干光接收机的方法
公开(公告)号：US20110008059A1
公开(公告)日：2011-01-13
申请号：US12643087
申请日：2009-12-21
申请人： Sun-hyok Chang , Hwan-seok Chung , Kwang-joon Kim
发明人： Sun-hyok Chang , Hwan-seok Chung , Kwang-joon Kim
IPC分类号： H04B10/06 , H03H7/30
CPC分类号： H04B10/25073 , H04B10/2569 , H04B10/60 , H04B10/611 , H04B10/6161 , H04B10/6162
摘要： 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.
摘要翻译：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。

6. 发明申请

US20100150576A1 OPTICAL TRANSMITTING APPARATUS FOR RETURN-TO-ZERO DIFFERENTIAL PHASE-SHIFT-KEYING (RZ-DPSK) OR RETURN-TO-ZERO DIFFERENTIAL QUADRATURE PHASE SHIFT KEYING (RZ-DQPSK) 审中-公开
标题翻译：用于返回到零差分相移键控（RZ-DPSK）或返回到零差分相位相移键控（RZ-DQPSK）的光传输装置
公开(公告)号：US20100150576A1
公开(公告)日：2010-06-17
申请号：US12610985
申请日：2009-11-02
申请人： Hwan-seok Chung , Sun-hyok Chang , Kwang-joon Kim
发明人： Hwan-seok Chung , Sun-hyok Chang , Kwang-joon Kim
IPC分类号： H04B10/04
CPC分类号： H04B10/505 , G02F2001/212 , H04B10/5561
摘要： 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.
摘要翻译：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。

7. 发明申请

US20100142964A1 OPTICAL TRANSMISSION APPARATUS WITH STABLE OPTICAL SIGNAL OUTPUT 审中-公开
标题翻译：具有稳定光信号输出的光传输装置
公开(公告)号：US20100142964A1
公开(公告)日：2010-06-10
申请号：US12581797
申请日：2009-10-19
申请人： Sun-hyok Chang , Hwan-seok Chung , Sang-soo Lee , Kwang-joon Kim
发明人： Sun-hyok Chang , Hwan-seok Chung , Sang-soo Lee , Kwang-joon Kim
IPC分类号： H04B10/04 , H04B10/00 , H04B10/12
CPC分类号： H04B10/50575 , H04B10/5053
摘要： 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.
摘要翻译：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。

8. 发明申请

US20090080892A1 NETWORK APPARATUS AND METHOD FOR GUARANTEEING ROLE OF OPTICAL SUPERVISORY CHANNEL 审中-公开
标题翻译：网络设备和保护光纤监控通道角色的方法
公开(公告)号：US20090080892A1
公开(公告)日：2009-03-26
申请号：US12121435
申请日：2008-05-15
申请人： Sun-hyok Chang , Hwan-seok Chung , Sang-soo Lee , Young-hwa Kim , Kwang-joon Kim
发明人： Sun-hyok Chang , Hwan-seok Chung , Sang-soo Lee , Young-hwa Kim , Kwang-joon Kim
IPC分类号： H04J14/02
CPC分类号： H04J14/0297 , H04J14/0227 , H04J14/0246 , H04J14/025
摘要： 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.
摘要翻译：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。

9. 发明授权

US08406625B2 Apparatus and method for cross-connecting optical path in wavelength division multiplexing system 有权
标题翻译：波分复用系统中交叉连接光路的装置和方法
公开(公告)号：US08406625B2
公开(公告)日：2013-03-26
申请号：US12486642
申请日：2009-06-17
申请人： Hwan-seok Chung , Sun-hyok Chang , Sang-soo Lee , Kwang-joon Kim
发明人： Hwan-seok Chung , Sun-hyok Chang , Sang-soo Lee , Kwang-joon Kim
IPC分类号： H04J14/00
CPC分类号： H04Q11/0062 , H04J14/0204 , H04J14/0205 , H04J14/0209 , H04J14/0212 , H04J14/0217 , H04J14/0291 , H04J14/0295 , H04J14/0297 , H04Q2011/0011 , H04Q2011/0015 , H04Q2011/0081
摘要： 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.
摘要翻译：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。

10. 发明授权

US08260154B2 Digital equalization apparatus and method for coherent optical receiver 失效
标题翻译：数字均衡装置及相干光接收机的方法
公开(公告)号：US08260154B2
公开(公告)日：2012-09-04
申请号：US12643087
申请日：2009-12-21
申请人： Sun-hyok Chang , Hwan-seok Chung , Kwang-joon Kim
发明人： Sun-hyok Chang , Hwan-seok Chung , Kwang-joon Kim
IPC分类号： H04B10/06
CPC分类号： H04B10/25073 , H04B10/2569 , H04B10/60 , H04B10/611 , H04B10/6161 , H04B10/6162
摘要： 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.
摘要翻译：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。

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