公开(公告)号：US20100150568A1

公开(公告)日：2010-06-17

申请号：US12538024

申请日：2009-08-07

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

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

IPC分类号： H04B10/00

CPC分类号： H04B10/677

摘要： 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.

摘要翻译： 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：US07751710B2

公开(公告)日：2010-07-06

申请号：US11745565

申请日：2007-05-08

申请人： Hwan Seok Chung ,  Sun Hyok Chang ,  Sang Soo Lee ,  Kwangjoon Kim

发明人： Hwan Seok Chung ,  Sun Hyok Chang ,  Sang Soo Lee ,  Kwangjoon Kim

IPC分类号： H04J14/00

CPC分类号： H04Q11/0005 ,  H04J14/0204 ,  H04J14/0209 ,  H04J14/0212 ,  H04J14/0217 ,  H04Q2011/0015 ,  H04Q2011/0039

摘要： Provided are a photonic cross-connector system, a wavelength division multiplexing (WDM) system using the photonic cross-connector system, and an optical communication network based on the WDM system. The photonic cross-connector system includes: an optical coupler branching an input optical signal into a plurality of paths; a wavelength selective switch (WSS) extracting at least one wavelength signal from the input optical signal and outputting the extracted wavelength signal to at least one port; a WDM multi-casting apparatus simultaneously copying and reproducing the input optical signal into different wavelengths and changing modulation methods of the input optical signal into different types of modulation methods; an optical transmitter and/or receiver branching and coupling the input optical signal; and a control system controlling the optical coupler, the WSS, the WDM multicasting apparatus, and the optical transmitter and/or receiver.

摘要翻译： 提供了一种光子交叉连接器系统，使用光子交叉连接器系统的波分复用（WDM）系统和基于WDM系统的光通信网络。 光子交叉连接器系统包括：将输入光信号分支成多个路径的光耦合器; 波长选择开关（WSS），从所述输入光信号中提取至少一个波长信号，并将所提取的波长信号输出到至少一个端口; WDM复合铸造设备同时将输入的光信号复制并再现成不同的波长，并且将输入的光信号的调制方法改变成不同类型的调制方法; 光发射机和/或接收机分支和耦合输入光信号; 以及控制光耦合器，WSS，WDM多播设备和光发射机和/或接收机的控制系统。

公开(公告)号：US20080118245A1

公开(公告)日：2008-05-22

申请号：US11810896

申请日：2007-06-07

申请人： Sun Hyok Chang ,  Hwan Seok Chung ,  Sang Soo Lee ,  Kwangjoon Kim

发明人： Sun Hyok Chang ,  Hwan Seok Chung ,  Sang Soo Lee ,  Kwangjoon Kim

IPC分类号： H04J14/02

CPC分类号： H04J14/021 ,  H04J14/0206 ,  H04J14/0212 ,  H04J14/0217

摘要： An optical node capable of supporting a mesh-type optical network is provided. The node includes: N ROADMs, which separate specific wavelength channels from a multiple wavelength channel optical signal that is input from any node constituting the optical network, allows the rest of the wavelength channels to be passed, and combine another added wavelength channel with the passed wavelength channel to allow the combined wavelength channel to be passed; an N×1 optical switch which selects the specific wavelength channel separated from one of the N ROADMs and inputs the specific wavelength channel into an optical transceiver and selects one of the N ROADMs and connects a wavelength channel that is output from the optical transceiver to the selected ROADM; and an electrical cross connect switch which drops a part of electrical signal bandwidth of the specific wavelength channels separated by the ROADM, which is converted into the electrical signals in the optical transceiver, toward an external client and combines the rest of the electrical signal bandwidth with a electrical signal added by the external client to form an electrical signal bandwidth of a wavelength channel and output the electrical signal to the optical transceiver. Accordingly, optical fiber inputs and outputs in various directions can be supported, and the number of WDM transceivers used for each node is remarkably reduced, thereby improving efficiency and economical efficiency of a network.

摘要翻译： 提供了一种支持网状光网络的光节点。 节点包括：N个ROADM，其将特定波长信道与从构成光网络的任何节点输入的多波长信道光信号分离，允许其余的波长信道通过，并将另一个添加的波长信道与传递的 波长通道以允许组合波长通道通过; Nx1光开关，其选择从N个ROADM之一分离的特定波长信道，并将特定波长信道输入到光收发器中，并选择N个ROADM中的一个，并将从光收发器输出的波长信道连接到所选择的ROADM ; 以及电交叉开关，其将由ROADM分离的特定波长信道的一部分电信号带宽（其被转换成光收发器中的电信号）向外部客户端转移，并将其余电信号带宽与 由外部客户端添加的电信号以形成波长信道的电信号带宽并将电信号输出到光收发器。 因此，可以支持各个方向的光纤输入和输出，并且显着地减少了用于每个节点的WDM收发器的数量，从而提高了网络的效率和经济效率。

公开(公告)号：US07848650B2

公开(公告)日：2010-12-07

申请号：US11975766

申请日：2007-10-22

申请人： Hwan Seok Chung ,  Kwangjoon Kim

发明人： Hwan Seok Chung ,  Kwangjoon Kim

IPC分类号： H04J14/08

CPC分类号： H04Q11/0005 ,  H04Q11/0066 ,  H04Q2011/0015 ,  H04Q2011/0039 ,  H04Q2011/0041 ,  H04Q2011/0045

摘要： In a conventional network for transmitting an optical burst signal, it is impossible to effectively swap labels, reproduce a payload signal, and switch and transmit the signals. A device for swapping optical labels and reproducing an optical payload, includes: an envelope detection unit outputting an envelope of payloads or labels of an optical burst signal by converting phases of two signals obtained by converting the optical burst signal into an electrical signal; a payload processing unit extracting a payload signal, which is included in the optical burst signal, by synchronizing the optical burst signal with the envelope output from the envelope detection unit and optically reproducing or wavelength-converting the extracted payload signal; and a label processing unit extracting a label signal, which is included in the optical burst signal, by synchronizing the optical burst signal with the envelope output form the envelope detection unit and converting the extracted label signal according to a path along which the optical burst signal is transmitted. Accordingly, it is possible to effectively swap the labels, reproduce the payload signal, and switch and transmit the signals, in the network for transmitting the optical burst signal.

摘要翻译： 在用于发送光突发信号的常规网络中，不可能有效地交换标签，再现有效负载信号，并且切换和发送信号。 一种用于交换光学标签和再现光学有效载荷的装置，包括：包络检测单元，通过将通过将光猝发信号转换成电信号而获得的两个信号的相位转换来输出有效载荷的包络或光猝发信号的标记; 有效载荷处理单元通过使所述光脉冲串信号与从所述包络检测单元输出的包络同步，并且对所提取的有效载荷信号进行光学再现或波长转换，提取包括在所述光突发信号中的有效载荷信号; 以及标签处理单元，通过使所述光脉冲串信号与所述包络检测单元的包络输出同步，提取包括在所述光突发信号中的标签信号，并且根据沿着所述光脉冲信号的路径转换所提取的标签信号 被传送。 因此，有可能在网络中有效地交换标签，再现有效载荷信号，以及切换和发送信号，以发送光突发信号。

公开(公告)号：US20080138081A1

公开(公告)日：2008-06-12

申请号：US11975766

申请日：2007-10-22

申请人： Hwan Seok Chung ,  Kwangjoon Kim

发明人： Hwan Seok Chung ,  Kwangjoon Kim

IPC分类号： H04B10/00

CPC分类号： H04Q11/0005 ,  H04Q11/0066 ,  H04Q2011/0015 ,  H04Q2011/0039 ,  H04Q2011/0041 ,  H04Q2011/0045

摘要： In a conventional network for transmitting an optical burst signal, it is impossible to effectively swap labels, reproduce a payload signal, and switch and transmit the signals. A device for swapping optical labels and reproducing an optical payload, includes: an envelope detection unit outputting an envelope of payloads or labels of an optical burst signal by converting phases of two signals obtained by converting the optical burst signal into an electrical signal; a payload processing unit extracting a payload signal, which is included in the optical burst signal, by synchronizing the optical burst signal with the envelope output from the envelope detection unit and optically reproducing or wavelength-converting the extracted payload signal; and a label processing unit extracting a label signal, which is included in the optical burst signal, by synchronizing the optical burst signal with the envelope output form the envelope detection unit and converting the extracted label signal according to a path along which the optical burst signal is transmitted. Accordingly, it is possible to effectively swap the labels, reproduce the payload signal, and switch and transmit the signals, in the network for transmitting the optical burst signal.

摘要翻译： 在用于发送光突发信号的常规网络中，不可能有效地交换标签，再现有效负载信号，并且切换和发送信号。 一种用于交换光学标签和再现光学有效载荷的装置，包括：包络检测单元，通过将通过将光猝发信号转换成电信号而获得的两个信号的相位转换来输出有效载荷的包络或光猝发信号的标记; 有效载荷处理单元通过使所述光脉冲串信号与从所述包络检测单元输出的包络同步，并且对所提取的有效载荷信号进行光学再现或波长转换，提取包括在所述光突发信号中的有效载荷信号; 以及标签处理单元，通过使所述光脉冲串信号与所述包络检测单元的包络输出同步，提取包括在所述光突发信号中的标签信号，并且根据沿着所述光脉冲信号的路径转换所提取的标签信号 被传送。 因此，有可能在网络中有效地交换标签，再现有效载荷信号，以及切换和发送信号，以发送光突发信号。

公开(公告)号：US20120121264A1

公开(公告)日：2012-05-17

申请号：US13386564

申请日：2010-07-14

申请人： Hwan Seok Chung ,  Sun Hyok Chang ,  Kwangjoon Kim

发明人： Hwan Seok Chung ,  Sun Hyok Chang ,  Kwangjoon Kim

IPC分类号： H04J14/06 ,  H04J14/02

CPC分类号： H04B10/5053 ,  H04B10/5561 ,  H04B10/66

摘要： An optical transmitting apparatus optically modulates a transmitting signal to transmit the signal to an optical receiving apparatus using a phase of two optical carriers having each wavelength, and an optical receiving apparatus demodulates an optical signal having a modulated phase with intensity modulation to detect a transmitting signal.

摘要翻译： 光发送装置对发送信号进行光调制，使用具有各波长的两个光载波的相位向光接收装置发送信号，并且光接收装置用强度调制解调具有调制相位的光信号，以检测发送信号 。

公开(公告)号：US08009986B2

公开(公告)日：2011-08-30

申请号：US11810896

申请日：2007-06-07

申请人： Sun Hyok Chang ,  Hwan Seok Chung ,  Sang Soo Lee ,  Kwangjoon Kim

发明人： Sun Hyok Chang ,  Hwan Seok Chung ,  Sang Soo Lee ,  Kwangjoon Kim

IPC分类号： H04J14/02

CPC分类号： H04J14/021 ,  H04J14/0206 ,  H04J14/0212 ,  H04J14/0217

摘要： An optical node capable of supporting a mesh-type optical network is provided. The node includes: N ROADMs, which separate specific wavelength channels from a multiple wavelength channel optical signal that is input from any node constituting the optical network, allows the rest of the wavelength channels to be passed, and combine another added wavelength channel with the passed wavelength channel to allow the combined wavelength channel to be passed; an N×1 optical switch which selects the specific wavelength channel separated from one of the N ROADMs and inputs the specific wavelength channel into an optical transceiver and selects one of the N ROADMs and connects a wavelength channel that is output from the optical transceiver to the selected ROADM; and an electrical cross connect switch which drops a part of electrical signal bandwidth of the specific wavelength channels separated by the ROADM, which is converted into the electrical signals in the optical transceiver, toward an external client and combines the rest of the electrical signal bandwidth with a electrical signal added by the external client to form an electrical signal bandwidth of a wavelength channel and output the electrical signal to the optical transceiver. Accordingly, optical fiber inputs and outputs in various directions can be supported, and the number of WDM transceivers used for each node is remarkably reduced, thereby improving efficiency and economical efficiency of a network.

摘要翻译： 提供了一种支持网状光网络的光节点。 节点包括：N个ROADM，其将特定波长信道与从构成光网络的任何节点输入的多波长信道光信号分离，允许其余的波长信道通过，并将另一个添加的波长信道与传递的 波长通道以允许组合波长通道通过; N×1光开关，其选择从N个ROADM之一分离的特定波长信道，并将特定波长信道输入到光收发器中，并选择N个ROADM中的一个，并将从光收发器输出的波长信道连接到 选择ROADM; 以及电交叉开关，其将由ROADM分离的特定波长信道的一部分电信号带宽（其被转换成光收发器中的电信号）向外部客户端转移，并将其余电信号带宽与 由外部客户端添加的电信号以形成波长信道的电信号带宽并将电信号输出到光收发器。 因此，可以支持各个方向的光纤输入和输出，并且显着地减少了用于每个节点的WDM收发器的数量，从而提高了网络的效率和经济效率。

公开(公告)号：US20100329684A1

公开(公告)日：2010-12-30

申请号：US11933100

申请日：2007-10-31

申请人： Sang Soo LEE ,  Hwan Seok Chung ,  Sun Hyok Chang ,  Kwangjoon Kim

发明人： Sang Soo LEE ,  Hwan Seok Chung ,  Sun Hyok Chang ,  Kwangjoon Kim

IPC分类号： H04J14/02

CPC分类号： H04J14/0212

摘要： Provided are a channel express/add optical module and a method of channel express/add in an optical add/drop multiplexer node using the channel express/add optical module. The channel express/add optical module comprises: a multiplexer/demultiplexer which demultiplexes a multiplexed optical signal having a plurality of wavelengths into individual wavelength optical signals or multiplexes a plurality of different wavelength optical signals; a plurality of 1×2 switches each of which includes a first output end that guides the demultiplexed different wavelength optical signals to output them thereto and a second output end through which new wavelength optical signals; and a plurality of reflectors each of which reflects the optical signal output to the first output end so that the optical signal is feedback to the multiplexer/demultiplexer via the 1×2 switches.The channel express/add optical module and the method of channel express/add in an OADM using this optical module are applied to a reconfigurable optical add/drop multiplexer system, and can express/add multiplexed channels in a node using a simple structure.

摘要翻译： 提供了一种频道快递/添加光学模块和使用频道快递/添加光学模块在光分插复用器节点中频道表示/添加的方法。 信道快速加/增光模块包括：多路复用器/解复用器，其将具有多个波长的多路复用光信号解复用为各波长光信号或复用多个不同波长光信号; 多个1×2开关，每个开关包括引导解复用的不同波长光信号以将其输出的第一输出端和通过其输出新波长光信号的第二输出端; 以及多个反射器，每个反射器将输出的光信号反射到第一输出端，​​使得光信号经由1×2开关反馈到多路复用器/解复用器。 使用该光模块的信道快递/增加光模块以及在OADM中进行信道表示/添加的方法被应用于可重新配置的光分插复用器系统，并且可以使用简单的结构在节点中表示/添加多路复用信道。

公开(公告)号：US08670679B2

公开(公告)日：2014-03-11

申请号：US13231328

申请日：2011-09-13

申请人： Hwan Seok Chung ,  Sun Hyok Chang

发明人： Hwan Seok Chung ,  Sun Hyok Chang

IPC分类号： H04B10/06

CPC分类号： H04J14/002 ,  H04B10/614 ,  H04B10/616

摘要： Provided is a coherent optical receiving apparatus and an optical signal processing method. The coherent optical receiving apparatus may include an optical hybrid unit to generate an optical signal by combining a first optical signal inputted from an optical transmitting apparatus and a second optical signal inputted from a local oscillator, a polarization demuxer to demultiplex the optical signal outputted from the optical hybridizing unit, a frequency offset compensator to estimate a frequency offset of at least one of even-numbered samples and odd-numbered samples, and to compensate for a frequency offset of the even-numbered samples and a frequency offset of the odd-numbered samples using the at least one estimated frequency offset, and a carver distortion compensator to compensate for phase distortions of the samples for which the compensation for the frequency offset is performed, the phase distortions being generated by the optical transmitting apparatus.

摘要翻译： 提供了一种相干光接收装置和光信号处理方法。 相干光接收装置可以包括：光混合单元，用于通过组合从光发射装置输入的第一光信号和从本机振荡器输入的第二光信号来产生光信号;偏振解复用器，用于对从 光学杂交单元，用于估计偶数样本和奇数样本中的至少一个的频率偏移的频率偏移补偿器，并且补偿偶数样本的频率偏移和奇数编号的频率偏移 使用所述至少一个估计频率偏移的采样，以及用于补偿执行对所述频率偏移的补偿的样本的相位失真的雕刻失真补偿器，所述相位失真由所述光发送装置产生。

公开(公告)号：US07356220B2

公开(公告)日：2008-04-08

申请号：US11399115

申请日：2006-04-05

申请人： Hwan Seok Chung ,  Heuk Park ,  Kwang Joon Kim

发明人： Hwan Seok Chung ,  Heuk Park ,  Kwang Joon Kim

IPC分类号： G02B6/26

CPC分类号： H04J14/005

摘要： Provided are an apparatus and a method for reducing a signal noise of an OCDMA receiver and an OCDMA receiver and method. The includes: a clock recovery unit extracting sine wave clock from an output signal of an OCDMA decoder including an MAI (multiple access interference) noise; a time gating unit separating an auto-correlation peak signal and the MAI noise from the output signal of the OCDMA decoder using the sine wave clock; and an optical interferometer removing an SI (signal interference) noise remaining in the auto-correlation peak signal.

摘要翻译： 提供了一种用于降低OCDMA接收机和OCDMA接收机的信号噪声的装置和方法以及方法。 包括：时钟恢复单元，从包括MAI（多址干扰）噪声的OCDMA解码器的输出信号提取正弦波时钟; 时间门控单元，使用正弦波时钟从OCDMA解码器的输出信号中分离自相关峰值信号和MAI噪声; 以及去除自相关峰值信号中剩余的SI（信号干扰）噪声的光学干涉仪。