公开(公告)号：US07809227B2

公开(公告)日：2010-10-05

申请号：US11918064

申请日：2005-09-23

申请人： Yun Chur Chung ,  Jun Haeng Lee ,  Eui Seung Son ,  Jang won Chae

发明人： Yun Chur Chung ,  Jun Haeng Lee ,  Eui Seung Son ,  Jang won Chae

IPC分类号： G02B6/02

CPC分类号： G02B6/02019 ,  G02B6/02047 ,  G02B6/0288 ,  G02B6/03633

摘要： An optical fiber, and an optical access network, a local area network and optical parts for communication, which uses the optical fiber, are disclosed. The optical fiber whose core diameter is 10 μm˜40 μm has at least two propagation modes in a wavelength over 1200 nm. The optical fiber according to the present invention can reduce packaging costs for optical components, since cross-sectional area of the core is large, compared with the prior art technique adopting a single mode optical fiber, and can transmit ultra-high speed data a relatively long distance, since the mode number and modal dispersion effect of the optical fiber is relatively small, compared with the prior art multimode optical fiber. Also, when using the optical fiber according to the present invention, the optical subscriber network and the local area network can be cost-effectively implemented. In addition, when adopting the optical fiber according to the present invention, productivity of optical components for communication can be improved, costs for an optical component can be reduced and quality of the optical component can be improved.

摘要翻译： 公开了一种使用光纤的光纤，光接入网，局域网和用于通信的光部件。 芯径为10μm〜40μm的光纤在1200nm以上具有至少两种传播模式。 根据本发明的光纤可以降低光学部件的封装成本，因为与使用单模光纤的现有技术相比，芯的横截面积大，并且可以相对地传输超高速数据 长距离，由于与现有技术的多模光纤相比，光纤的模数和模态色散效应相对较小。 此外，当使用根据本发明的光纤时，可以成本有效地实现光用户网络和局域网。 此外，采用本发明的光纤时，能够提高通信用光学部件的生产率，能够降低光学部件的成本，提高光学部件的质量。

公开(公告)号：US20090074351A1

公开(公告)日：2009-03-19

申请号：US11918064

申请日：2005-09-23

申请人： Yun Chur Chung ,  Jun Haeng Lee ,  Eui Seung Son ,  Jang Won Chae

发明人： Yun Chur Chung ,  Jun Haeng Lee ,  Eui Seung Son ,  Jang Won Chae

IPC分类号： G02B6/12 ,  G02B6/00

CPC分类号： G02B6/02019 ,  G02B6/02047 ,  G02B6/0288 ,  G02B6/03633

摘要： An optical fiber, and an optical access network, a local area network and optical parts for communication, which uses the optical fiber, are disclosed. The optical fiber whose core diameter is 10 μm˜40 μm has at least two propagation modes in a wavelength over 1200 nm. The optical fiber according to the present invention can reduce packaging costs for optical components, since cross-sectional area of the core is large, compared with the prior art technique adopting a single mode optical fiber, and can transmit ultra-high speed data a relatively long distance, since the mode number and modal dispersion effect of the optical fiber is relatively small, compared with the prior art multimode optical fiber. Also, when using the optical fiber according to the present invention, the optical subscriber network and the local area network can be cost-effectively implemented. In addition, when adopting the optical fiber according to the present invention, productivity of optical components for communication can be improved, costs for an optical component can be reduced and quality of the optical component can be improved.

摘要翻译： 公开了一种使用光纤的光纤，光接入网，局域网和用于通信的光部件。 芯径为10〜40μm的光纤在1200nm以上的波长中具有至少两种传播模式。 根据本发明的光纤可以降低光学部件的封装成本，因为与使用单模光纤的现有技术相比，芯的横截面积大，并且可以相对地传输超高速数据 长距离，由于与现有技术的多模光纤相比，光纤的模数和模态色散效应相对较小。 此外，当使用根据本发明的光纤时，可以成本有效地实现光用户网络和局域网。 此外，采用本发明的光纤时，能够提高通信用光学部件的生产率，能够降低光学部件的成本，提高光学部件的质量。

公开(公告)号：US07881613B2

公开(公告)日：2011-02-01

申请号：US11635701

申请日：2006-12-07

申请人： Byoung Whi Kim ,  Woo Ram Lee ,  Yun Chur Chung ,  Eui Seung Son ,  Jang Won Chae

发明人： Byoung Whi Kim ,  Woo Ram Lee ,  Yun Chur Chung ,  Eui Seung Son ,  Jang Won Chae

IPC分类号： H04B10/08

CPC分类号： H04J14/02 ,  H04J14/0221 ,  H04J14/0226 ,  H04J14/0227 ,  H04J14/0246 ,  H04J14/025 ,  H04J14/0282

摘要： Provided are an apparatus and method for tracking a wavelength in a passive optical subscriber network in which a central base station and at least one subscriber terminal are connected via a remote node. The apparatus includes a first wavelength aligning unit multiplexing and aligning wavelengths of optical signals from a plurality of single-mode optical sources of the central base station; a second wavelength aligning unit multiplexing and aligning wavelengths of optical signals transmitted to the remote node from a plurality of single-mode optical sources of the subscriber terminal; and a third wavelength aligning unit demultiplexing and aligning wavelengths of optical signals from the second wavelength aligning unit, the third wavelength aligning unit being included in the central base station. Accordingly, when the wavelengths of passbands of a multiplexer/demultiplexer (MUX/DEMUX) of a remote station change due to a change in the ambient temperature, wavelength tracking is performed by making aligned the wavelengths of optical sources of a central base station, a multiplexer/demultiplexer, and subscriber terminals, thereby minimizing optical channel loss and enabling reliable management of WDM-PON.

摘要翻译： 提供了一种用于跟踪无源光用户网络中的波长的装置和方法，其中中央基站和至少一个用户终端经由远程节点连接。 该装置包括：第一波长对准单元，复用并对准来自中央基站的多个单模光源的光信号的波长; 第二波长对准单元，从用户终端的多个单模光源复用并对准从远程节点传输的光信号的波长; 以及第三波长对准单元，对来自所述第二波长对准单元的光信号进行解复用和对准波长，所述第三波长对准单元包括在所述中央基站中。 因此，当远程站的多路复用器/解复用器（MUX / DEMUX）的通带波长由于环境温度的变化而改变时，通过使中心基站的光源的波长对齐来执行波长跟踪， 多路复用器/解复用器和用户终端，从而最小化光信道丢失并实现WDM-PON的可靠管理。

公开(公告)号：US07848643B2

公开(公告)日：2010-12-07

申请号：US12458240

申请日：2009-07-06

申请人： Yun Chur Chung ,  Eui Seung Son ,  Kyung Woo Lim ,  Kwan Hee Han

发明人： Yun Chur Chung ,  Eui Seung Son ,  Kyung Woo Lim ,  Kwan Hee Han

IPC分类号： H04J14/02

CPC分类号： H04J14/0295 ,  H04J14/0226 ,  H04J14/0246 ,  H04J14/025 ,  H04J14/0282 ,  H04J14/0291

摘要： A communication recovering system for a wavelength division multiplexed passive optical network (WDM PON) includes a central office and remote nodes. When there is a fault in an optical fiber connecting a first blue/red band coupler to a blue/red band coupler R11, optical signals are inputted/outputted thereto/therefrom through a first 1×2 optical switch and a second blue/red band coupler, and when there is a fault in an optical fiber connecting the second blue/red band coupler to a blue/red band coupler R21, optical signals are inputted/outputted thereto/therefrom through the second 1×2 optical switch and the first blue/red band coupler.

摘要翻译： 用于波分复用无源光网络（WDM PON）的通信恢复系统包括中心局和远程节点。 当将第一蓝/红频带耦合器连接到蓝/红频带耦合器R11的光纤中存在故障时，通过第一1×2光开关和第二蓝/红带输入/输出光信号 耦合器，并且当连接第二蓝/红频带耦合器到蓝/红带耦合器R21的光纤中存在故障时，光信号通过第二1×2光开关输入/输出到其中，并且第一蓝 /红色带耦合器。

公开(公告)号：US20090290866A1

公开(公告)日：2009-11-26

申请号：US12458240

申请日：2009-07-06

申请人： Yun Chur Chung ,  Eui Seung Son ,  Kyung Woo Lim ,  Kwan Hee Han

发明人： Yun Chur Chung ,  Eui Seung Son ,  Kyung Woo Lim ,  Kwan Hee Han

IPC分类号： H04B10/02

CPC分类号： H04J14/0295 ,  H04J14/0226 ,  H04J14/0246 ,  H04J14/025 ,  H04J14/0282 ,  H04J14/0291

摘要： A communication recovering system for a wavelength division multiplexed passive optical network (WDM PON). The communication recovering system can recover fault of optical fibers between the central office and the remote nodes without additional optical fibers by grouping two remote nodes and employing an AWG having periodic transmission characteristics, and can also simply and rapidly recover such a fault with minimal optical loss using an AWG of 2×N structure and an On-Off optical switch, although protection optical fibers are additionally installed therein. The system can rapidly recover fault of optical fibers between a local office and optical network units, 1:N manner, using 2×2 optical switches, which are installed to each of the optical network units, a reserved transmitter and receiver, and a transceiver. The communication recovering system has advantages in that it can simplify network structure, be cost-effectively implemented, reduce optical loss, and rapidly perform protection of optical fiber fault.

摘要翻译： 一种用于波分复用无源光网络（WDM PON）的通信恢复系统。 通信恢复系统可以通过对两个远程节点进行分组并采用具有周期性传输特性的AWG来恢复中心局和远程节点之间的光纤故障，而无需额外的光纤，并且还可以以最小的光损耗简单快速地恢复这样的故障 使用2xN结构的AWG和On-Off光开关，尽管保护光纤另外安装在其中。 该系统可以以1：N的方式快速恢复本地办公室和光网络单元之间的光纤故障，使用安装在每个光网络单元，保留发射机和接收机以及收发器的2x2光开关。 通信恢复系统的优点在于可以简化网络结构，经济高效地实现，减少光损耗，快速实现光纤故障保护。

公开(公告)号：US07558477B2

公开(公告)日：2009-07-07

申请号：US11260112

申请日：2005-10-28

申请人： Yun Chur Chung ,  Eui Seung Son ,  Kyung Woo Lim ,  Kwan Hee Han

发明人： Yun Chur Chung ,  Eui Seung Son ,  Kyung Woo Lim ,  Kwan Hee Han

IPC分类号： H04J14/02

CPC分类号： H04J14/0295 ,  H04J14/0226 ,  H04J14/0246 ,  H04J14/025 ,  H04J14/0282 ,  H04J14/0291

摘要： A communication recovering system for a wavelength division multiplexed passive optical network (WDM PON). The communication recovering system can recover fault of optical fibers between the central office and the remote nodes without additional optical fibers by grouping two remote nodes and employing AWGs having periodic transmission characteristics, and can also simply and rapidly recover such a fault with minimal optical loss using 1×N structure of the AWGs and On-Off optical switches, although protection optical fibers are additionally installed therein. The communication recovering system has advantages in that it can simplify network structure, be cost-effectively implemented, reduce optical loss, and rapidly perform protection of optical fiber fault.

摘要翻译： 一种用于波分复用无源光网络（WDM PON）的通信恢复系统。 通信恢复系统可以通过对两个远程节点进行分组并采用具有周期性传输特性的AWG来恢复中心局和远程节点之间的光纤故障，而无需额外的光纤，并且还可以使用最小的光损耗简单快速地恢复这种故障， AWG和On-Off光开关的1xN结构，尽管保护光纤另外安装在其中。 通信恢复系统的优点在于可以简化网络结构，经济高效地实现，减少光损耗，快速实现光纤故障保护。

公开(公告)号：US07542673B2

公开(公告)日：2009-06-02

申请号：US11262738

申请日：2005-11-01

申请人： Yun Chur Chung ,  Eui Seung Son ,  Kyung Woo Lim ,  Kwan Hee Han

发明人： Yun Chur Chung ,  Eui Seung Son ,  Kyung Woo Lim ,  Kwan Hee Han

IPC分类号： H04B10/08 ,  H04B17/00

CPC分类号： H04J14/0226 ,  H04B10/0771 ,  H04J14/0246 ,  H04J14/025 ,  H04J14/0282

摘要： A fault localization apparatus for an optical line in a wavelength division multiplexed passive optical network is disclosed. The apparatus can detect light loss and fault positions as a channel exhibiting an abnormal receiving state of signals received by each of the upstream receivers is checked, and a monitoring optical signal is used, in which the monitoring optical signal is generated as a pulse is inputted to a light source of the downstream transmitter corresponding to the channel showing such an abnormal receiving state. The apparatus according to the present invention can detect fault positions of optical lines between the central office and the remote nodes and between the remote nodes and the optical network units, since the light source of downstream channel in which faults occur is used as a monitoring light source. The apparatus according to the present invention can be cost-effectively implemented.

摘要翻译： 公开了一种波分复用无源光网络中的光线路故障定位装置。 该装置可以检测光损失和故障位置，因为检测到由每个上游接收器接收的信号的异常接收状态的信道，并且使用监视光信号，其中监视光信号作为脉冲被输入 到对应于表示这种异常接收状态的信道的下游发射机的光源。 根据本发明的装置可以检测中心局与远程节点之间以及远程节点与光网络单元之间的光线路的故障位置，因为发生故障的下行信道的光源被用作监视光 资源。 根据本发明的装置可以成本有效地实现。