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：US20100092172A1

公开(公告)日：2010-04-15

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。

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：US20080080861A1

公开(公告)日：2008-04-03

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： H04J14/02

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：US07154663B2

公开(公告)日：2006-12-26

申请号：US11196464

申请日：2005-08-03

申请人： Won Kyoung Lee ,  Sun Hyok Chang ,  Moo Jung Chu

发明人： Won Kyoung Lee ,  Sun Hyok Chang ,  Moo Jung Chu

IPC分类号： H01S4/00 ,  H04B10/12

CPC分类号： H01S3/302 ,  G02B6/02028 ,  G02B6/02261 ,  G02B6/0281 ,  G02B6/03644 ,  H01S3/06725 ,  H01S3/06729 ,  H01S3/06775 ,  H01S3/1695

摘要： A dispersion compensating fiber (DCF), which is an amplification medium of an S-band discrete Raman amplifier (RA), has a trapezoid core, an inner cladding surrounding the trapezoid core; and an outer cladding surrounding the inner cladding. A ring is disposed between the inner cladding and the outer cladding. The refractive index plotted across the diameter of the trapezoid core as a function of distance is substantially trapezoidal in shape. The difference in refractive index between the trapezoid core and the outer cladding is 1.2 to 1.6%; between the inner cladding and the outer cladding is 0.4 to 0.8%; and between the ring and the outer cladding is 0.2 to 0.6%. The thickness of the ring is 0.8 to 1.2 times the radius of the trapezoid core, and the thickness of the inner cladding is 1 to 3 times the radius of the trapezoid core.

摘要翻译： 作为S波段离散拉曼放大器（RA）的放大介质的色散补偿光纤（DCF）具有梯形铁芯，围绕梯形铁芯的内包层; 以及围绕内包层的外包层。 环设置在内包层和外包层之间。 作为距离的函数的梯形铁芯的直径的折射率基本上呈梯形。 梯形铁芯与外包层之间的折射率差为1.2〜1.6％。 内包层与外包层之间为0.4〜0.8％; 并且环与外包层之间为0.2至0.6％。 环的厚度是梯形铁芯的半径的0.8〜1.2倍，内包层的厚度为梯形铁芯的半径的1〜3倍。

公开(公告)号：US20050122570A1

公开(公告)日：2005-06-09

申请号：US10835225

申请日：2004-04-28

申请人： Sun Hyok Chang ,  Hee Sang Chung ,  Jin Soo Han ,  Ji Sung Jung ,  Heuk Park ,  Won Kyoung Lee ,  Hyun Jae Lee

发明人： Sun Hyok Chang ,  Hee Sang Chung ,  Jin Soo Han ,  Ji Sung Jung ,  Heuk Park ,  Won Kyoung Lee ,  Hyun Jae Lee

IPC分类号： G02F1/35 ,  H01S3/067 ,  H01S3/094 ,  H01S3/13 ,  H01S3/131 ,  H01S3/30

CPC分类号： H01S3/302 ,  H01S3/06754 ,  H01S3/094076 ,  H01S3/094096 ,  H01S3/1301 ,  H01S3/1305

摘要： Provided are a Raman amplifier and a Raman pumping method. A light source unit outputs a pumping light having a wavelength that periodically changes. A light intensity control unit varies a light intensity of the pumping light using the pumping light to improve the gain flatness of a Raman gain. A control unit directs the light intensity control unit to control the light intensity of the pumping light in synchronization with changes in the wavelength of the pumping light.

摘要翻译： 提供了拉曼放大器和拉曼泵浦方法。 光源单元输出具有周期性变化的波长的泵浦光。 光强度控制单元使用泵浦光来改变泵浦光的光强度，以提高拉曼增益的增益平坦度。 控制单元引导光强度控制单元与泵浦光的波长的变化同步地控制泵浦光的光强度。