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31. 发明申请

US20070154213A1 Method and device for monitoring an optical transmission line, especially an optical transmission line to an end subscriber of a transmission network 有权
标题翻译：用于监测光传输线路的方法和设备，特别是到传输网络的终端用户的光传输线路
公开(公告)号：US20070154213A1
公开(公告)日：2007-07-05
申请号：US11412201
申请日：2006-04-26
申请人： Henning Hinderthur
发明人： Henning Hinderthur
IPC分类号： H04B10/08
CPC分类号： H04B10/0771
摘要： The invention relates to a method for monitoring an optical transmission line, especially an optical transmission line to an end subscriber of a transmission network; in which digital optical signals are transmitted bidirectionally between a first and a second end point of the transmission line (1); in which at the first end point of the transmission line (1) the digital optical signal to be transmitted to the second end point is amplitude-modulated with a preset frequency, with the modulation amplitude being small relative to the amplitude of the digital signal; in which, at the second end point of the transmission line (1) a small fraction of the power of the received digital signal is overcoupled passively on the optical transmission line (1) in the direction towards the first end point and is transmitted to the first end point together with the digital signal to be transmitted from the second end point to the first end point of the optical transmission line (1); in which at the first end point the amplitude-modulated component of the received digital signal is detected; and in which an interruption in the optical transmission line (1) is determined when the power of the amplitude-modulated component or an associated optical or electrical characteristic parameter is smaller than a preset limit value.
摘要翻译：本发明涉及一种用于监测光传输线路，特别是到传输网络的终端用户的光传输线路的方法; 其中数字光信号在传输线（1）的第一和第二端点之间双向传输; 其中在传输线（1）的第一端点处，要传输到第二端点的数字光信号以预设频率进行幅度调制，调制幅度相对于数字信号的振幅小; 其中，在传输线（1）的第二端点处，所接收的数字信号的一小部分功率在光传输线（1）上沿着朝向第一端点的方向被动地被过耦合，并被发送到第一端点以及从第二端点传输到光传输线（1）的第一端点的数字信号; 其中在第一端点检测所接收的数字信号的幅度调制分量; 并且当幅度调制分量的功率或相关联的光或电特性参数小于预设极限值时，确定光传输线（1）中的中断。

32. 发明授权

US07120324B2 Intrusion detection system for use on an optical fiber using a translator of transmitted data for optimum monitoring conditions 有权
标题翻译：使用传输数据的转换器在光纤上使用的入侵检测系统，以获得最佳监测条件
公开(公告)号：US07120324B2
公开(公告)日：2006-10-10
申请号：US11137776
申请日：2005-05-26
申请人： Cary R. Murphy , Mark K. Bridges , David E. Vokey
发明人： Cary R. Murphy , Mark K. Bridges , David E. Vokey
IPC分类号： G02B6/00 , H04B17/00 , H04B10/00
CPC分类号： H04B10/0771 , G02B6/262 , G02B6/4469
摘要： A method and system of intrusion detection system for a multimode fiber optic cable. A light signal is launched into the cable fiber to establish a narrow spectral width, under-filled non-uniform mode field power distribution in the cable. A small portion of the higher order signal modes arriving at the remote end of the cable is sampled and monitored for transient changes in the mode field power distribution. The power distribution changes with physical disturbance of the cable. When those changes are detected as being characteristic of fiber intrusion, the system activates an alarm. This method can sense and alarm any attempt to access the optical fibers in a fiber optic communication cable. In preferred embodiments, the active signal of a multimode optical fiber is monitored for both signal degradation and transient power disturbance patterns that could indicate fiber damage or physical intrusion. A translator can be provided in an existing optical fiber system in which the data signals are translated in wavelength and/or launch conditions to optimize the monitoring signals in an otherwise non-optimized system.
摘要翻译：一种多模光缆入侵检测系统的方法和系统。光信号被发射到电缆光纤中以在电缆中建立窄的光谱宽度，未充分的非均匀模式场分布。到达电缆远端的较高阶信号模式的一小部分被采样并监测模场分配中的瞬态变化。电力分配随着电缆的物理扰动而变化。当这些变化被检测为光纤入侵的特征时，系统激活报警。该方法可以感测和报警在光纤通信电缆中访问光纤的任何尝试。在优选实施例中，监视多模光纤的有源信号用于可能指示光纤损坏或物理入侵的信号劣化和瞬态功率干扰模式。可以在现有光纤系统中提供转换器，其中数据信号在波长和/或发射条件下被转换，以在另一非优化系统中优化监视信号。

33. 发明授权

US07113698B1 Fault detection and isolation in an optical network 有权
标题翻译：光网络中的故障检测和隔离
公开(公告)号：US07113698B1
公开(公告)日：2006-09-26
申请号：US10045587
申请日：2001-11-06
申请人： Kent Ryhorchuk , Sichao Wang
发明人： Kent Ryhorchuk , Sichao Wang
IPC分类号： H04B10/08
CPC分类号： H04B10/0771
摘要： A system for detecting faults in an optical network having switching nodes and amplifier nodes is provided. According to one aspect of the system, one or more amplifier nodes are coupled between two switching nodes. Each amplifier node is capable of detecting a fault condition, such as a loss-of-signal (LOS) condition, on an incoming line. Upon detecting the LOS condition, the amplifier node generates a fault report which is then forwarded to a switching node. The switching node uses information from the fault report to initiate switching actions, if any, to restore traffic. According to another aspect of the system, each amplifier node is configured to receive a fault report received from another amplifier node and forward such fault report to a switching node. Each amplifier node is further configured to prioritize a fault condition identified in a fault report received from another amplifier node and the fault condition detected on its incoming line.
摘要翻译：提供一种用于检测具有交换节点和放大器节点的光网络中的故障的系统。根据系统的一个方面，一个或多个放大器节点耦合在两个交换节点之间。每个放大器节点能够检测输入线路上的故障状况，例如信号丢失（LOS）条件。在检测到LOS条件时，放大器节点产生故障报告，然后将其转发到交换节点。交换节点使用来自故障报告的信息来启动交换动作（如果有的话）来恢复流量。根据该系统的另一方面，每个放大器节点被配置为接收从另一个放大器节点接收的故障报告，并将该故障报告转发给交换节点。每个放大器节点还被配置为对从另一放大器节点接收的故障报告中识别的故障状况和在其输入线路上检测到的故障状况进行优先级排序。

34. 发明授权

US07103275B2 Optical transmission system 有权
公开(公告)号：US07103275B2
公开(公告)日：2006-09-05
申请号：US10073195
申请日：2002-02-13
申请人： Haruo Fujiwara
发明人： Haruo Fujiwara
IPC分类号： H04B10/08 , H04B17/00 , H04B10/02
CPC分类号： H04B10/0777 , H04B10/0771 , H04B2210/074
摘要： An optical transmission system capable of monitoring the operating status of Raman-amplifier repeaters even when an optical transmission line is partly disrupted by a fiber failure. An end station sends a monitoring command signal to request a particular repeater to report its operating status, together with a response carrier wave for use in that reporting. With their different wavelengths, an upstream wavelength selector in the repeater selectively passes the monitoring command signal while reflecting back the response carrier wave. Responsive to the command, a monitoring controller creates a response message containing operating status information. An excitation unit performs Raman amplification with a pump beam modulated by a modulation controller, so that the response message be superimposed on the response carrier wave propagating on the upstream link. The resulting monitoring response signal is routed from the upstream wavelength selector to a downstream optical coupler and sent back to the requesting end station.

35. 发明申请

US20060002649A1 Intrusion detection system for use on an optical fiber using a translator of transmitted data for optimum monitoring conditions 有权
公开(公告)号：US20060002649A1
公开(公告)日：2006-01-05
申请号：US11137776
申请日：2005-05-26
申请人： Cary Murphy , Mark Bridges , David Vokey
发明人： Cary Murphy , Mark Bridges , David Vokey
IPC分类号： G02B6/00
CPC分类号： H04B10/0771 , G02B6/262 , G02B6/4469
摘要： A method and system of intrusion detection system for a multimode fiber optic cable. A light signal is launched into the cable fiber to establish a narrow spectral width, under-filled non-uniform mode field power distribution in the cable. A small portion of the higher order signal modes arriving at the remote end of the cable is sampled and monitored for transient changes in the mode field power distribution. The power distribution changes with physical disturbance of the cable. When those changes are detected as being characteristic of fiber intrusion, the system activates an alarm. This method can sense and alarm any attempt to access the optical fibers in a fiber optic communication cable. In preferred embodiments, the active signal of a multimode optical fiber is monitored for both signal degradation and transient power disturbance patterns that could indicate fiber damage or physical intrusion. A translator can be provided in an existing optical fiber system in which the data signals are translated in wavelength and/or launch conditions to optimize the monitoring signals in an otherwise non-optimized system.

36. 发明申请

US20050259264A1 Observation apparatus and observation system 有权
标题翻译：观察仪器和观察系统
公开(公告)号：US20050259264A1
公开(公告)日：2005-11-24
申请号：US11078339
申请日：2005-03-14
申请人： Hiroaki Munehira , Junichi Nakagawa , Toshiyuki Tokura , Kenichi Asakawa , Hitoshi Mikada , Katsuyoshi Kawaguchi
发明人： Hiroaki Munehira , Junichi Nakagawa , Toshiyuki Tokura , Kenichi Asakawa , Hitoshi Mikada , Katsuyoshi Kawaguchi
IPC分类号： G08C15/04 , G01D21/00 , G01V1/22 , G08C19/00 , G08C23/04 , G08C25/00 , H04B10/03 , H04B10/035 , H04B10/075 , H04B10/278 , H04B10/297 , H04J14/00 , H04J14/02 , G02B7/182
CPC分类号： H04B10/291 , H04B10/0771 , H04B2210/074 , H04B2210/078
摘要： The present invention discloses a submarine observation system in which a plurality of carrier lights assigned to each submarine observation equipment is transmitted from a land terminal apparatus to an optical submarine cable (down-going) by using a WDM transmission. In the submarine observation equipment, only a prescribed carrier light is demultiplexed by an optical demultiplexer, an observation signal indicating an observation result is generated by an observation device, intensity of the carrier light demultiplexed by the optical demultiplexer is modulated by an optical amplifier based on an observation signal, and the modulated carrier light is multiplexed by an optical multiplexer. The multiplexed carrier light is output to the optical submarine cable (up-going) to be returned to the land terminal apparatus being the transmission station. The land terminal apparatus is able to obtain an observation signal of each observation point by separating carrier lights based on each wavelength and receiving a separated carrier light of each wavelength. Accordingly, the system can be structured with one optical fiber and can be extendable by increasing or decreasing carrier lights, and either one of the land terminal apparatuses can receive an observation signal even when the optical submarine cable is cut off.
摘要翻译：本发明公开了一种潜艇观测系统，其中通过使用WDM传输将分配给每个潜艇观测设备的多个载波灯从陆地终端装置发送到光学海底电缆（下行）。在潜艇观察设备中，仅通过光解复用器对规定的载波进行解复用，由观察装置产生表示观察结果的观测信号，由光解复用器解复用的载波的强度由基于观测信号，并且调制载波用光复用器复用。复用的载波光被输出到光学海底电缆（向上），以返回到作为发送站的陆地终端设备。陆地终端装置能够通过基于每个波长分离载波来获得每个观测点的观测信号，并且接收每个波长的分离的载波。因此，该系统可以由一根光纤构成，并且可以通过增加或减少载波来扩展，并且即使当光学海底电缆被切断时，陆上终端设备中的任一个也可以接收观测信号。

37. 发明授权

US06708004B1 Method and apparatus for reducing crosstalk between a monitoring channel and a data channel in a WDM optical communication system 有权
标题翻译：一种用于减少WDM光通信系统中的监视信道与数据信道之间的串扰的方法和装置
公开(公告)号：US06708004B1
公开(公告)日：2004-03-16
申请号：US09204043
申请日：1998-12-01
申请人： Glen Mitchell Homsey
发明人： Glen Mitchell Homsey
IPC分类号： H04B1002
CPC分类号： H04B10/035 , H04B10/0771 , H04B10/85 , H04B2210/077
摘要： An optical communication system is provided that includes first and second optical transmitters/receivers remotely located with respect to one another and which are coupled together by first and second optical transmission paths for bidirectionally transmitting optical information therebetween. First and second optical amplifiers are respectively disposed in the first and second optical transmission paths. At least one loop-back path optically couples a portion of a WDM optical signal from the first to the second transmission path. The loop-back path includes a filter for transmitting a monitoring channel but not a data channel included in the optical signal portion traversing the loop-back path.
摘要翻译：提供了一种光通信系统，其包括相对于彼此远程定位的第一和第二光发射机/接收机，并且通过第一和第二光传输路径耦合在一起，用于双向传输光信息。第一和第二光放大器分别设置在第一和第二光传输路径中。至少一个环回路径将WDM光信号的一部分从第一传输路径光耦合到第二传输路径。环回路径包括用于发送监视信道但不包括穿过环回路径的光信号部分中的数据信道的滤波器。

38. 发明申请

US20040017965A1 Subscriber line terminal device and loopback test method 失效
标题翻译：用户线终端设备和环回测试方法
公开(公告)号：US20040017965A1
公开(公告)日：2004-01-29
申请号：US10308421
申请日：2002-12-03
发明人： Hideji Abe
IPC分类号： G02B006/28
CPC分类号： H04B10/035 , H04B10/0771 , H04B2210/071
摘要： The present invention provides a subscriber line terminal device, which enables identification of the cause of abnormality when abnormality is detected in remote monitoring of a subscriber line terminating device connected to the terminal device via an optical fiber. The terminal device receives a plurality of monitoring signals sent from the terminating device via the optical fiber, the plurality of monitoring signals indicating normality or abnormality of a plurality of monitored items in the terminating device respectively. When two or more among the plurality of monitoring signals indicates abnormality, the terminal device selects a monitoring signal with high order of priority from among the two or more monitoring signals indicating abnormality, based on a prescribed order of priority.
摘要翻译：本发明提供了一种用户线路终端装置，其能够在通过光纤远程监视与终端装置连接的用户线路终端装置的情况下检测到异常时识别异常的原因。所述终端装置经由所述光纤接收从所述终端装置发送的多个监视信号，所述多个监视信号分别指示所述终端装置中的多个被监视项目的正常或异常。当多个监视信号中的两个或更多个指示异常时，终端设备基于指定的优先级顺序从指示异常的两个或更多个监视信号中选择具有高优先级的监视信号。

39. 发明申请

US20030041279A1 Fault isolation technique for optical networks 失效
标题翻译：光网络故障隔离技术
公开(公告)号：US20030041279A1
公开(公告)日：2003-02-27
申请号：US09940139
申请日：2001-08-27
发明人： Ross Saunders
IPC分类号： G06F011/00
CPC分类号： H04L1/20 , H04B10/0771 , H04B10/0775 , H04B2210/075
摘要： A method is provided for isolating faults in an optical network having a plurality of partial regenerators. The method includes: transmitting an optical signal through the optical network; determining an error rate for the optical signal at an egress point of the optical network; sequentially introducing a dither control signal into the optical signal at each of the plurality of partial regenerators; and monitoring the error rate for the optical signal at the egress point of the optical network; thereby isolating where a fault occurs in the optical network.
摘要翻译：提供一种用于隔离具有多个部分再生器的光网络中的故障的方法。该方法包括：通过光网络发送光信号; 确定光网络出口处的光信号的错误率; 在所述多个部分再生器中的每一个处依次引入抖动控制信号到所述光信号中; 并监测光网络出口处光信号的误码率; 从而隔离光网络中发生故障的位置。

40. 发明申请

US20030035184A1 Optical transmission system 失效
标题翻译：光传输系统
公开(公告)号：US20030035184A1
公开(公告)日：2003-02-20
申请号：US10014442
申请日：2001-12-14
申请人： Fujitsu Limited
发明人： Hiroyuki Deguchi , Shin-Ichirou Harasawa , Izumi Yokota
IPC分类号： H04B010/08 , H04B010/02
CPC分类号： H04B10/2918 , H04B10/0771 , H04B10/0777 , H04B10/2916 , H04B2210/074 , H04B2210/078
摘要： There is disclosed an optical transmission system ensuring high-quality monitor control even if an optical fiber fault occurs. A monitor instruction sending unit sends a monitor instruction. An operating condition recognizing unit receives a response signal and recognizes the operating condition. A filtering unit filters the monitor instruction and the response signal. A monitor control unit monitors the operating condition of its own repeater in response to the monitor instruction, and generates resultant response information. A pump unit generates a pump light to cause Raman amplification within an optical fiber transmission medium. A regeneration control unit performs a regeneration control of the response signal to thereby create a regenerated signal. A modulation control unit modulates the pump light by the response information or the regenerated signal to thereby generate the response signal. A photocoupler is connected to the optical fiber transmission medium, and sends the response signal in a direction identical to or reverse to that in which an optical main signal travels.
摘要翻译：公开了即使发生光纤故障也能确保高质量的监视控制的光传输系统。监视器指令发送单元发送监视指令。操作条件识别单元接收响应信号并识别操作条件。滤波单元过滤监视指令和响应信号。监视器控制单元响应于监视指令来监视其自身中继器的工作状态，并产生合成响应信息。泵单元产生泵浦光以在光纤传输介质内引起拉曼放大。再生控制单元执行响应信号的再生控制，从而产生再生信号。调制控制单元通过响应信息或再生信号来调制泵浦光，从而产生响应信号。光电耦合器连接到光纤传输介质，并以与光主信号行进相同或相反的方向发送响应信号。

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