公开(公告)号：US06735391B2

公开(公告)日：2004-05-11

申请号：US09767701

申请日：2001-01-24

申请人： Chang Hee Lee ,  Hyun Deok Kim ,  Jeong Hun Shin

发明人： Chang Hee Lee ,  Hyun Deok Kim ,  Jeong Hun Shin

IPC分类号： H04B1000

CPC分类号： H04B10/275 ,  H04B10/032 ,  H04B10/077 ,  H04B10/07955 ,  H04B10/27 ,  H04J14/0227 ,  H04J14/0241 ,  H04J14/0283 ,  H04J14/0291

摘要： The present invention relates to an automatic retrieval method of a wavelength-division multiplexed (WDM) ring network to the normal state after recovery of a failure. More specifically, the present invention relates to an automatic retrieval method of a WDM ring network to the normal state after recovery of a failure by inducing a lasing by making the gain of the closed loop larger than 1 using the fact that the recovered section in the ring network forms a closed loop immediately after the recovery of the failure.

摘要翻译： 本发明涉及在故障恢复之后波分复用（WDM）环网到正常状态的自动检索方法。 更具体地，本发明涉及通过使闭环增益大于1的诱导激光而恢复故障之后的正常状态的WDM环网的自动检索方法，其中使用 环网络在恢复故障后立即形成闭环。

公开(公告)号：US06894830B2

公开(公告)日：2005-05-17

申请号：US10054322

申请日：2002-01-22

申请人： Chang-Hee Lee ,  Yun-Je Oh ,  Seong-Taek Hwang ,  Hyun Deok Kim ,  Jeong-Hun Shin ,  Yunhee Cho

发明人： Chang-Hee Lee ,  Yun-Je Oh ,  Seong-Taek Hwang ,  Hyun Deok Kim ,  Jeong-Hun Shin ,  Yunhee Cho

IPC分类号： H01S3/10 ,  G02B6/42 ,  H01S3/30 ,  H01S5/50 ,  H04B10/00 ,  H04B10/2525 ,  H04B10/29 ,  H04B10/294 ,  H04B10/297 ,  H04J14/00 ,  H04J14/02 ,  G02F1/35 ,  H04B10/16

CPC分类号： H04B10/297

摘要： Disclosed is a bi-directional optical-amplifier module including first through fourth optical amplifiers, a mid-stage device for performing a desired signal processing for an upward or downward optical signal passing therethrough, a first optical-signal-path-setting device for supplying an optical signal inputted to a first input/output terminal of the bi-directional optical-amplifier module while outputting an optical signal outputted from the fourth optical amplifier to the first input/output terminal, a second optical-signal-path-setting device for supplying an optical signal inputted to a second input/output terminal of the bi-directional optical-amplifier module while outputting an optical signal outputted from the third optical amplifier to the second input/output terminal, a third optical-signal-path-setting device for outputting an optical signal outputted from the first optical amplifier to a first input/output terminal of the mid-stage device while supplying an optical signal outputted from the first input/output terminal of the mid-stage device to the fourth optical amplifier, and a fourth optical-signal-path-setting device for outputting an optical signal outputted from the second optical amplifier to a second input/output terminal of the mid-stage device while supplying an optical signal outputted from the second input/output terminal of the mid-stage device to the third optical amplifier.

摘要翻译： 公开了一种双向光放大器模块，包括第一到第四光放大器，用于对通过其的向上或向下的光信号执行期望的信号处理的中级装置，用于供应的第一光信号路径设置装置 输出到所述双向光放大器模块的第一输入/输出端的光信号，同时将从所述第四光放大器输出的光信号输出到所述第一输入/输出端;第二光信号路径设置装置， 提供输入到双向光放大器模块的第二输入/输出端的光信号，同时将从第三光放大器输出的光信号输出到第二输入/输出端;第三光信号路径设定装置 用于在提供光信号的同时将从第一光放大器输出的光信号输出到中级装置的第一输入/输出端 从中段装置的第一输入/输出端子输出到第四光放大器;以及第四光信号路径设置装置，用于将从第二光放大器输出的光信号输出到第二输入/输出端 中间级装置，同时将从中级装置的第二输入/输出端子输出的光信号提供给第三光放大器。

公开(公告)号：US06832017B2

公开(公告)日：2004-12-14

申请号：US09767702

申请日：2001-01-24

申请人： Chang Hee Lee ,  Hyun Deok Kim ,  Jeong Hun Shin ,  Tae Won Oh ,  Yun Hee Cho

发明人： Chang Hee Lee ,  Hyun Deok Kim ,  Jeong Hun Shin ,  Tae Won Oh ,  Yun Hee Cho

IPC分类号： G02B628

CPC分类号： H04J14/0216 ,  H04J14/0208

摘要： The present invention relates to a bidirectional add/drop multiplexer (BADM) and a bidirectional add/drop amplifier (BADA) module. The present invention includes an N×N arrayed waveguide grating router (AWGR), two optical circulators, two wavelength selective couplers, two optical isolators, and a mid-stage device. The mid-stage device comprises a means for compensating the chromatic dispersion of the optical fibers, a means for flattening the spectral response of the optical amplifiers, a means for suppressing the accumulation of the ASE noise or a combination of these means.

摘要翻译： 本发明涉及一种双向分插复用器（BADM）和双向放大放大器（BADA）模块。本发明包括一个NxN阵列波导光栅路由器（AWGR），两个光循环器，两个波长选择耦合器 光隔离器和中级装置。 中间级装置包括用于补偿光纤的色散的装置，用于平坦化光放大器的光谱响应的装置，用于抑制ASE噪声的累积的装置或这些装置的组合。

公开(公告)号：US06775058B2

公开(公告)日：2004-08-10

申请号：US10123663

申请日：2002-04-16

申请人： Chang Hee Lee ,  Hyun Deok Kim ,  Jeong Hun Shin ,  Yun Hee Cho

发明人： Chang Hee Lee ,  Hyun Deok Kim ,  Jeong Hun Shin ,  Yun Hee Cho

IPC分类号： H01S300

CPC分类号： H01S3/2383 ,  H01S3/06758 ,  H01S3/06766 ,  H01S3/0677 ,  H01S5/4087 ,  H01S5/50

摘要： The present invention discloses a wide band optical amplifier with a common mid-stage device. In the wide band optical amplifier according to the present invention, the signals that enter the amplifier are first split into a couple of sub-band signals. The sub-band signals are amplified independently at different optical amplification sections, but they share a common mid-stage device, which reduces the complexity and the cost of the amplifier. The sub-band signals propagate count-directionally in the common mid-stages device to reduce the nonlinear interactions between the signals in different sub-bands. A wide band optical amplifier incorporating a common mid-stage device with directionality is also disclosed.

摘要翻译： 本发明公开了一种具有公共中级装置的宽带光放大器。 在根据本发明的宽带光放大器中，进入放大器的信号首先被分成几个子带信号。 子带信号在不同的光放大部分被独立地放大，但它们共享一个共同的中间级器件，这降低了放大器的复杂性和成本。 子带信号在公共中间级装置中传播计数方向，以减少不同子带中的信号之间的非线性相互作用。 还公开了一种结合具有方向性的公共中间装置的宽带光放大器。

公开(公告)号：US06529656B2

公开(公告)日：2003-03-04

申请号：US09767917

申请日：2001-01-24

申请人： Chang Hee Lee ,  Hyun Deok Kim ,  Jeong Hun Shin ,  Tae Won Oh ,  Yun Hee Cho

发明人： Chang Hee Lee ,  Hyun Deok Kim ,  Jeong Hun Shin ,  Tae Won Oh ,  Yun Hee Cho

IPC分类号： G02B628

CPC分类号： G02B6/12019 ,  H04B10/2941 ,  H04B10/2972 ,  H04B2210/256 ,  H04J14/0208 ,  H04J14/0216

摘要： The present invention discloses a bi-directional add/drop multiplexer (BADM) and a bi-directional add/drop amplifier (BADA) module which add/drop wavelength-interleaved counter-propagating signals. The mid-stage device in the BADM and the BADA module is shared by the counter-propagating signals.

摘要翻译： 本发明公开了一种双向分插复用器（BADM）和双向放大放大器（BADA）模块，它们对波长交织的反向传播信号进行分插。 BADM和BADA模块中的中级设备由反向传播信号共享。

公开(公告)号：US20110211838A1

公开(公告)日：2011-09-01

申请号：US13042383

申请日：2011-03-07

申请人： Chang Hee LEE ,  Hyun Deok Kim

发明人： Chang Hee LEE ,  Hyun Deok Kim

IPC分类号： H04B10/20

CPC分类号： H04J14/02 ,  H01S5/0608 ,  H01S5/4006 ,  H04B10/502 ,  H04B10/506 ,  H04B10/564

摘要： The present invention discloses a low-cost light source for optical transmission systems and optical networks based on wavelength-division multiplexing (WDM) technology. A light source in accordance with the present invention is implemented by externally injecting a narrow-band incoherent light into a Fabry-Perot laser diode (F-P LD). After injection of narrow-band incoherent light, the output of F-P LD becomes wavelength-selective rather than multi-mode and the output wavelength of F-P LD coincide with the peak wavelength of the injected incoherent light.Multi-channel WDM light sources according to the present invention can be implemented using a single broadband incoherent light source and plurality of F-P LDs. An optical transmission system for upstream signal transmission in an passive optical network using the light source according the present invention is also disclosed.

摘要翻译： 本发明公开了一种基于波分复用（WDM）技术的光传输系统和光网络的低成本光源。 根据本发明的光源通过将窄带非相干光外部注入到法布里 - 珀罗激光二极管（F-P LD）中来实现。 在注入窄带非相干光后，F-P LD的输出变为波长选择性而不是多模，F-P LD的输出波长与注入的非相干光的峰值波长一致。 根据本发明的多通道WDM光源可以使用单个宽带非相干光源和多个F-P LD来实现。 还公开了一种在根据本发明的使用光源的无源光网络中用于上行信号传输的光传输系统。

公开(公告)号：US07327957B2

公开(公告)日：2008-02-05

申请号：US10394076

申请日：2003-03-21

申请人： Chang Hee Lee ,  Hyun Deok Kim

发明人： Chang Hee Lee ,  Hyun Deok Kim

IPC分类号： H04J14/02 ,  H04B10/04

CPC分类号： H04J14/02 ,  H04B10/503 ,  H04B10/506 ,  H04B10/572

摘要： The present invention relates to a wavelength-tunable light source whose output wavelength can be externally controlled and a wavelength-division multiplexed transmission system using the source.A wavelength-tunable light source in accordance with the present invention is constituted to be able to vary the output wavelength of a Fabry-Perot laser diode, that is wavelength-locked to an injected light, by controlling the wavelength of the injected light.A wavelength-tunable light source in accordance with the present invention provides comparatively large output power and excellent economic features.The present invention also presents a wavelength-division multiplexed transmission system using the wavelength-tunable light source.

摘要翻译： 本发明涉及可以外部控制输出波长的波长可调光源和使用该源的波分复用传输系统。 根据本发明的波长可调光源通过控制注入的光的波长，能够改变法布里 - 珀罗激光二极管的输出波长，其被波长锁定到注入的光。 根据本发明的波长可调光源提供了比较大的输出功率和优异的经济特征。 本发明还提出了一种使用波长可调光源的波分复用传输系统。

公开(公告)号：US20110211839A1

公开(公告)日：2011-09-01

申请号：US13042386

申请日：2011-03-07

申请人： Chang Hee LEE ,  Hyun Deok Kim

发明人： Chang Hee LEE ,  Hyun Deok Kim

IPC分类号： H04J14/02

CPC分类号： H04J14/02 ,  H01S5/0608 ,  H01S5/4006 ,  H04B10/502 ,  H04B10/506 ,  H04B10/564

摘要： The present invention discloses a low-cost light source for optical transmission systems and optical networks based on wavelength-division multiplexing (WDM) technology. A light source in accordance with the present invention is implemented by externally injecting a narrow-band incoherent light into a Fabry-Perot laser diode (F-P LD). After injection of narrow-band incoherent light, the output of F-P LD becomes wavelength-selective rather than multi-mode and the output wavelength of F-P LD coincide with the peak wavelength of the injected incoherent light.Multi-channel WDM light sources according to the present invention can be implemented using a single broadband incoherent light source and plurality of F-P LDs. An optical transmission system for upstream signal transmission in an passive optical network using the light source according the present invention is also disclosed.

公开(公告)号：US20080232805A1

公开(公告)日：2008-09-25

申请号：US12004693

申请日：2007-12-21

申请人： Chang-Hee Lee ,  Hyun Deok Kim

发明人： Chang-Hee Lee ,  Hyun Deok Kim

IPC分类号： H04J14/02 ,  H01S5/026

CPC分类号： H04J14/02 ,  H04B10/503 ,  H04B10/506 ,  H04B10/572

摘要： The present invention relates to a wavelength-tunable light source whose output wavelength can be externally controlled and a wavelength-division multiplexed transmission system using the source.A wavelength-tunable light source in accordance with the present invention is constituted to be able to vary the output wavelength of a Fabry-Perot laser diode, that is wavelength-locked to an injected light, by controlling the wavelength of the injected light.A wavelength-tunable light source in accordance with the present invention provides comparatively large output power and excellent economic features.The present invention also presents a wavelength-division multiplexed transmission system using, the wavelength-tunable light source.

摘要翻译： 本发明涉及可以外部控制输出波长的波长可调光源和使用该源的波分复用传输系统。 根据本发明的波长可调光源通过控制注入的光的波长，能够改变法布里 - 珀罗激光二极管的输出波长，其被波长锁定到注入的光。 根据本发明的波长可调光源提供了比较大的输出功率和优异的经济特征。 本发明还提出了使用波长可调光源的波分复用传输系统。

公开(公告)号：US06538784B1

公开(公告)日：2003-03-25

申请号：US09387527

申请日：1999-09-01

申请人： Chang Hee Lee ,  Yun Chur Chung ,  Hyun Deok Kim

发明人： Chang Hee Lee ,  Yun Chur Chung ,  Hyun Deok Kim

IPC分类号： H04J1402

CPC分类号： H04Q11/0005 ,  H04Q2011/0047 ,  H04Q2011/0075

摘要： This invention relates to a multicast-capable optical cross-connect with layered modularity. Due to its layered modularity, this invention can be applied to many differently structured networks and provides easier maintenance than conventional optical cross-connects and efficient preparation for network evolution or node upgrade. By exploiting its simple elementary switches, multicast-capable optical cross-connect with layered modularity minimizes the switching time. For a given node, M input fiber ports supply multiplexed optical signals from other nodes in the network and m input fiber ports supply multiplexed optical signals generated from the node. M+m 1×M optical power splitters 311, 312, 313, 314, 315 distribute multiplexed input signals. A drop link module 331 selects signals to be dropped at the node where the optical cross-connect is installed. M transmission link modules 321, 322, 323 select signals to be transmitted to other nodes out of input signals.

摘要翻译： 本发明涉及具有分层模块化的具有组播能力的光交叉连接。 由于其分层的模块化，本发明可以应用于许多不同结构的网络，并且提供比常规光交叉连接更简单的维护以及用于网络演进或节点升级的有效准备。 通过利用其简单的基本交换机，具有分层模块化的多播能力交叉连接最小化了切换时间。 对于给定节点，M个输入光纤端口提供来自网络中其他节点的复用光信号，并且m个输入光纤端口提供从节点产生的复用光信号。 M + m×1M光功率分配器311,312,313,314,315分配复用输入信号。 下拉链路模块331选择要在其上安装光交叉连接的节点丢弃的信号。 M个传输链路模块321,322,323从输入信号中选择要发送到其他节点的信号。