公开(公告)号：US06920287B1

公开(公告)日：2005-07-19

申请号：US09630681

申请日：2000-08-01

申请人： Mark R. Hinds ,  Stephane St. Laurant

发明人： Mark R. Hinds ,  Stephane St. Laurant

IPC分类号： G01M11/00 ,  H04B10/02 ,  H04B10/08 ,  H04B10/12 ,  H04B10/13 ,  H04B10/135 ,  H04B10/14

CPC分类号： H04B10/0771 ,  H04B10/0775 ,  H04B2210/071

摘要： To automate fiber connectivity management in optical systems, a dedicated low bit-rate communications channel unique to each fiber connection in an optical system is provided. The dedicated communications channel simplifies fiber connectivity management by supporting the exchange of port identification information from one optical component to another after which processing determines if the specific connection is a desired association. The dedicated communications channel supports optical interconnection surveillance for all card-to-card optical connections within a group of related cards or within an optical network link. Automating fiber connectivity management in this manner will enhance future products by simplifying the fiber connection validation process and ensuring that any specific connection between optical components is the required association. This will be particularly useful in complex optical environments with many interconnected devices and where troubleshooting faulty connections would be time-consuming and, therefore, very costly.

摘要翻译： 为了自动化光学系统中的光纤连接管理，提供了在光学系统中每个光纤连接独有的专用低比特率通信信道。 专用通信信道通过支持端口识别信息从一个光学组件到另一个光学组件的交换来简化光纤连接管理，之后处理确定特定连接是否是期望的关联。 专用通信信道支持对一组相关卡内或光网络链路内的所有卡到卡光连接的光互连监控。 以这种方式自动化光纤连接管理将通过简化光纤连接验证过程并确保光学组件之间的任何特定连接是必需的关联来增强未来的产品。 这将在具有许多互连设备的复杂光学环境中特别有用，并且在故障连接故障排除中耗费时间并因此非常昂贵。

公开(公告)号：US06839516B2

公开(公告)日：2005-01-04

申请号：US09939559

申请日：2001-08-28

申请人： Byung Tak Lee ,  Jong Hoon Kim ,  Chang Bae Hyun

发明人： Byung Tak Lee ,  Jong Hoon Kim ,  Chang Bae Hyun

IPC分类号： H04B10/077 ,  H04B10/08 ,  H04B10/00

CPC分类号： H04B10/0771 ,  H04B10/0775 ,  H04B2210/08

摘要： An apparatus and method are disclosed for visualizing an automatic laser shutdown (ALS) state. An operator is informed of the ALS state by transmitting a visible light with weak power, to an optical fiber, that effuses from the cut position of the optical fiber. The operator recognizes the cut position of the optical fiber by comparing the power of the ALS visible light reflected from the cut surface of the optical fiber and that of the transmitting ALS visible light, and thus restores the cut optical fiber at the recognized position.

摘要翻译： 公开了用于可视化自动激光关闭（ALS）状态的装置和方法。 通过将具有弱功率的可见光透射到从光纤的切割位置流出的光纤，向ALS状态通知操作者。 操作者通过比较从光纤的切割表面反射的ALS可见光的功率和发射的ALS可见光的功率来识别光纤的切割位置，从而在被识别的位置恢复切割的光纤。

公开(公告)号：US20040208561A1

公开(公告)日：2004-10-21

申请号：US10108734

申请日：2002-03-27

发明人： Susumu Kinoshita ,  Koji Takeguchi ,  Satoru Odate ,  Cechan Tian

IPC分类号： H04B010/08 ,  H04B010/20 ,  H04J014/00

CPC分类号： H04B10/275 ,  H04B10/035 ,  H04B10/0771 ,  H04B10/27 ,  H04B2210/071 ,  H04J14/0204 ,  H04J14/0205 ,  H04J14/021 ,  H04J14/0213 ,  H04J14/0217 ,  H04J14/0219 ,  H04J14/0221 ,  H04J14/0227 ,  H04J14/0241 ,  H04J14/0283 ,  H04J14/0291

摘要： A method and system for control signaling in an open ring optical network includes transmitting traffic in an optical ring. At each of a plurality of nodes along the ring, local traffic is passively added to and passively dropped from the connected ring. At each node, an ingress optical supervisory channel (OSC) signal is dropped from the ring to a managing element. An egress OSC signal is added to the ring from the managing element. The OSC signals may be in-band signal or out-of-band signals.

摘要翻译： 开环光网络中用于控制信令的方法和系统包括在光环中传输业务。 在环上的多个节点中的每个节点处，本地业务被被动地被添加到被动连接的环被动地被动地丢弃。 在每个节点处，入口光监控信道（OSC）信号从环被丢弃到管理元件。 出口OSC信号从管理元件添加到环中。 OSC信号可以是带内信号或带外信号。

公开(公告)号：US20040208519A1

公开(公告)日：2004-10-21

申请号：US10092746

申请日：2002-03-07

申请人： LUCENT TECHNOLOGIES INC.

发明人： Robert D. Feldman ,  Janet M. Greenberg ,  Mile Radovanovic ,  S. R. Thangavelu ,  William A. Thompson

IPC分类号： H04B010/08 ,  H04B010/00

CPC分类号： H04B10/0771 ,  H04B2210/08

摘要： A method and apparatus for controlling the power level of an optical signal includes detecting the loss of a supervisory signal counter-propagating in an optical fiber.

摘要翻译： 用于控制光信号功率电平的方法和装置包括检测在光纤中相反传播的监控信号的损耗。

公开(公告)号：US20040146306A1

公开(公告)日：2004-07-29

申请号：US10756495

申请日：2004-01-14

申请人： ECI TELECOM LTD.

发明人： Tal Muzicant ,  David Harris

IPC分类号： H04B010/02

CPC分类号： H04B10/2935 ,  H04B10/0771 ,  H04B10/0775

摘要： A technique for maintaining a required value of power per optical communication channel in a chain of optical nodes (112, 114, 118, 116) connected by optical fiber spans (111, 119, 121), wherein at least some of the nodes include optical amplifiers (112, 114, 116) with controllable gains, the technique comprises performing automatic gain control at the optical amplifiers so that, in the frame of power gain of each particular optical amplifier (114, 116), to compensate a preceding span loss. The span loss is calculated as power loss on an optical fiber span (111, 121) incoming the particular amplifier.

公开(公告)号：US06731872B1

公开(公告)日：2004-05-04

申请号：US09515916

申请日：2000-03-01

申请人： Hubert Jaeger ,  Gerhard Stortz ,  Detlef Stoll ,  Reinhard Johannsen ,  Wilhelm-Martin Plotz

发明人： Hubert Jaeger ,  Gerhard Stortz ,  Detlef Stoll ,  Reinhard Johannsen ,  Wilhelm-Martin Plotz

IPC分类号： H04B1008

CPC分类号： H04B10/0771 ,  H04B2210/078

摘要： A central equipment is connected by at least two optical fibers to a decentralized optical equipment and the central equipment creates an optical auxiliary signal which is transmitted together with an optical payload signal from the central equipment to the decentralized equipment. The optical auxiliary signal that is received in the decentralized optical equipment is rerouted and transmitted back to the central optical equipment via another optical fiber in addition to a second payload signal, and the reception of the optical auxiliary signal is optically monitored in the central optical equipment to determine if there is a breakage in either one of the fibers extending to the unit.

摘要翻译： 中央设备通过至少两根光纤连接到分散的光学设备，并且中央设备产生光学辅助信号，其与来自中央设备的光学有效载荷信号一起传送到分散设备。 除了第二有效负载信号之外，在分散式光学设备中接收的光学辅助信号被重新路由并通过另一个光纤传送回中央光学设备，并且光学辅助信号的接收在中央光学设备 以确定延伸到该单元中的任一纤维中是否存在断裂。

公开(公告)号：US06718141B1

公开(公告)日：2004-04-06

申请号：US09472124

申请日：1999-12-23

申请人： Jim Adrian deVette

发明人： Jim Adrian deVette

IPC分类号： H04B1008

CPC分类号： H04J14/0227 ,  H04B10/0771 ,  H04B2210/071 ,  H04J14/0201 ,  H04J14/0241 ,  H04J14/0283 ,  H04J14/0284

摘要： Optical networks using wavelength division multiplexing (WDM) techniques require innovative methods of maintaining network connectivity data and for identifying and isolating network faults. The present invention discloses such methods using a signal processor for installation at each node for retrieving upstream connectivity data from an out-of-band signal, updating the data and returning it to the out-of-band signal for use by downstream elements. A central network monitor periodically requests updates from each node of the connectivity data maintained by it in the form of messages transmitted along the out-of-band signal. When the various payload signals carried along the network are modulated with in-band signals carrying data which identifies the source and wavelength of the payload, this data can be combined with the updated connectivity data to identify network faults and raise alarms for transmission along the out-of-band signal to the central network monitor. The central network monitor can use the connectivity data and fault isolation alarms to direct its operations, analysis and maintenance functions. Signal formats for the out-of-band signal and apparatus including the node signal processor and the central network monitor for implementing the disclosed methods are also disclosed.

摘要翻译： 使用波分复用（WDM）技术的光网络需要维护网络连接数据以及识别和隔离网络故障的创新方法。 本发明公开了使用信号处理器来安装在每个节点处的用于从带外信号中检索上游连通性数据，更新数据并将其返回到带外信号供下游元件使用的方法。 中央网络监视器周期性地以其沿着带外信号发送的消息的形式请求由其维护的连接数据的每个节点的更新。 当带有沿着网络传送的各种有效负载信号被用带有标识有效载荷的源和波长的数据的带内信号进行调制时，该数据可以与更新的连接数据组合以识别网络故障，并且提高沿着传输的报警 带通信号到中央网络监视器。 中央网络监视器可以使用连接数据和故障隔离报警来指导其操作，分析和维护功能。 还公开了用于实现所公开方法的带外信号和包括节点信号处理器和中央网络监视器的装置的信号格式。

公开(公告)号：US06681079B1

公开(公告)日：2004-01-20

申请号：US09573235

申请日：2000-05-18

申请人： Andrew V Maroney

发明人： Andrew V Maroney

IPC分类号： H04B1700

CPC分类号： H04B10/038 ,  H04B10/0771 ,  H04B2210/078 ,  H04B2210/08

摘要： The present invention provides a method of monitoring a transmission fiber including the steps of transmitting a monitor signal on the transmission fiber in a direction opposite to the propagation of traffic signals on the transmission fiber, at an optical amplifier connected to the transmission fiber detecting the monitor signal and automatically shutting down the optical amplifier in response to a predetermined change in the detected monitor signal. The invention facilitates a faster shut down of amplifiers when a fault occurs than is currently available because it shuts down the amplifier feeding directly into the area of broken fiber first rather than last as in conventional communication systems.

摘要翻译： 本发明提供一种监测传输光纤的方法，包括以下步骤：在连接到检测监视器的传输光纤上的光放大器处，在传输光纤上以与传输光纤上的业务信号的传播相反的方向传输监视信号 信号并响应于检测到的监视信号中的预定变化自动地关闭光放大器。 当故障发生时，本发明有助于当故障发生时比当前可用的更快地关闭放大器，因为如先前而不是如常规通信系统那样，放大器将放大器直接馈入断开的光纤区域而不是最后进行放大。

公开(公告)号：US20010038488A1

公开(公告)日：2001-11-08

申请号：US09897108

申请日：2001-07-03

申请人： Fujitsu Limited

发明人： Susumu Kinoshita

IPC分类号： H01S003/00

CPC分类号： H04B10/296 ,  H01S3/06754 ,  H01S3/10015 ,  H01S3/1301 ,  H01S3/1305 ,  H01S2301/06 ,  H04B10/0771 ,  H04B10/0775 ,  H04B10/0777 ,  H04B2210/075 ,  H04B2210/078 ,  H04J14/0221 ,  H04J14/0227 ,  H04J14/0246 ,  H04J14/0279 ,  H04J14/0298

摘要： An optical communication system having a transmitting station for outputting WDM (wavelength-division multiplexing) signal light, an optical fiber transmission line, a receiving station, and an optical repeater including an optical amplifier. The transmitting station includes a supervisory circuit for detecting the number of channels of the WDM signal light and transmitting supervisory information including the number of channels to the optical repeater. The optical repeater further includes a circuit for controlling the optical amplifier so that the output level of the optical amplifier becomes a target level. The target level is set according to the supervisory information. According to the structure, it can be possible to provide a system which can easily respond to a change in the number of WDM channels.

公开(公告)号：US06285475B1

公开(公告)日：2001-09-04

申请号：US08582845

申请日：1995-12-29

申请人： John Arthur Fee

发明人： John Arthur Fee

IPC分类号： H04B1008

CPC分类号： H04B10/03 ,  H04B10/0771 ,  H04B10/0773 ,  H04B2210/071 ,  H04B2210/074 ,  H04B2210/078 ,  H04J14/0283 ,  H04J14/0286 ,  H04J14/0287 ,  H04Q11/0003 ,  H04Q2011/0081

摘要： A method and system for detecting optical faults by tapping a portion of a data signal from along a fiber network link at an optical switching site or node. The tapped data signal is evaluated to determine whether an optical fault exists along the fiber link. In this way, optical faults such as a fiber failure, cable cut, or nodal LTE failure occurring within a network path, are isolated to a specific fiber span or link. Network switch controllers can then take full advantage of optical switches provided between spans in an all-optical core network to restore end-to-end path communication. In one embodiment, a presence detector simply evaluates the magnitude of the tapped signal to determine an optical fault. In a second embodiment, a protocol analyzer evaluates selected bits or fields of the protocol used in the tapped data signal to determine an optical fault. Finally, in a third embodiment, a sub-carrier modulation signal is added to the high rate data signal prior to transport over the link. The subcarrier signal is significantly lower in both frequency and amplitude than the main data signal so as to not impact reliable reception of the main data signal. A low-pass filter tuned to the sub-carrier modulation signal filters the tapped data signal. By detecting the sub-carrier signal, fault can be determined inexpensively and reliably in the presence of optical noise.

摘要翻译： 一种用于通过在光交换站点或节点处沿着光纤网络链路点击数据信号的一部分来检测光学故障的方法和系统。 评估抽头数据信号以确定光纤链路是否存在光学故障。 以这种方式，在网络路径中发生的诸如光纤故障，电缆切断或节点LTE故障之类的光学故障被隔离到特定光纤跨度或链路。 网络交换机控制器可以充分利用全光核心网络跨域提供的光交换机来恢复端到端路径通信。 在一个实施例中，存在检测器简单地评估抽头信号的大小以确定光学故障。 在第二实施例中，协议分析器评估在抽头数据信号中使用的协议的所选位或字段以确定光学故障。 最后，在第三实施例中，在通过链路传输之前，将副载波调制信号添加到高速率数据信号。 子载波信号的频率和幅度都比主数据信号低得多，从而不会影响主数据信号的可靠接收。 调谐到子载波调制信号的低通滤波器对抽头数据信号进行滤波。 通过检测副载波信号，可以在存在光学噪声的情况下廉价且可靠地确定故障。