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公开(公告)号：US06829406B2
公开(公告)日：2004-12-07
申请号：US10273858
申请日：2002-10-21
IPC分类号： G02B628
CPC分类号： H04B10/2513
摘要： A method and system for determining location and value of dispersion compensating modules (DCMs) in an optical network is provided. The method comprises evaluating possible DCM values and locations and successively adding selected combinations to the network until the dispersion limits of the network are met. This systematic method is applicable to a variety of network topologies. In one embodiment, the method for determining the location and value of the DCMs uses the amount of compensated effective dispersion over all lightpaths that pass through the DCM to select the combinations. In another embodiment, the method is repeated a number of times with different selections of DCM value and location combinations, and the method providing the least number of DCMs and the lowest DCM values is chosen.
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公开(公告)号：US07139480B2
公开(公告)日：2006-11-21
申请号：US10673790
申请日：2003-09-30
申请人： Eddie Kai Ho Ng , Derrick Remedios , Colin Geoffrey Kelly , Ping Wai Wan , John Frederick Groves
发明人： Eddie Kai Ho Ng , Derrick Remedios , Colin Geoffrey Kelly , Ping Wai Wan , John Frederick Groves
IPC分类号： H04B10/08
CPC分类号： H04B10/077 , H04B10/07955
摘要： A method and system for multi-level power management in an optical network is provided. They include three levels of power management. The first level of power management dynamically changes equipment settings in each module of equipment so that required module setpoint values in each module are achieved. The second level of power management determines module setpoint values for each module of equipment within each node in the optical link so that required node setpoint values are achieved. The third level of power management determines node setpoint values at each node in the optical link so that the optical link meets predetermined power specifications. If any of the three levels cannot achieve the required setpoint values, an error signal is generated by that level of power management and sent to the level of power management above it, thus initiating a higher level of power management. As a result, a dynamic and automatic adjustment to changing operating conditions and configurations in the network is provided, which allows to maintain relatively stable network powers. Each level of power management is implemented such that sections of the network can operate independent of each other, thus increasing the survivability of the network.
摘要翻译： 提供了一种用于光网络中多级电源管理的方法和系统。 它们包括三级电源管理。 第一级电源管理动态地更改设备的每个模块中的设备设置，从而实现每个模块中所需的模块设定值。 第二级电源管理确定光链路中每个节点内设备的每个模块的模块设定值，以便实现所需的节点设定值。 电源管理的第三级确定光链路中每个节点处的节点设定值，使得光链路满足预定的功率规格。 如果三个级别中的任何一个级别都不能达到要求的设定值，则通过该级别的功率管理生成错误信号并将其发送到其上方的电源管理级别，从而启动更高级别的电源管理。 结果，提供对网络中变化的操作条件和配置的动态和自动调整，这允许维持相对稳定的网络功率。 每个级别的电源管理被实现，使得网络的各部分可以彼此独立地操作，从而增加网络的生存性。
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3.发明授权Method for determining location and gain settings of amplifiers in an optical network by using a genetic algorithm 失效用于通过使用遗传算法确定光网络中的放大器的位置和增益设置的方法公开(公告)号：US07038837B2
公开(公告)日：2006-05-02
申请号：US10443955
申请日：2003-05-23
CPC分类号： H04B10/2933 , H04B10/2935
摘要： A method for determining locations and gain settings of amplifiers in an optical network is provided. The method comprises evaluating allowable amplifier locations, randomly generating sets of amplifier locations from the allowable amplifier locations, and applying genetic operations to the sets of amplifier locations until a predetermined exit condition is satisfied. This systematic method is applicable to a variety of network topologies and takes into account existing network limitations. In one embodiment, the method for determining the locations and gain settings of the amplifiers uses the amount of operating margin in the network to select sets of locations to be eliminated. In another embodiment, the method takes into account and determines the placement of dispersion compensation modules (DCMs), choices of which are provided by DCM placement procedures.
摘要翻译： 提供了一种用于确定光网络中的放大器的位置和增益设置的方法。 该方法包括评估允许的放大器位置，从允许的放大器位置随机生成放大器位置集合，以及将遗传操作应用于放大器位置集合，直到满足预定的退出条件。 该系统方法适用于各种网络拓扑，并考虑到现有的网络限制。 在一个实施例中，用于确定放大器的位置和增益设置的方法使用网络中的操作余量来选择要消除的位置集合。 在另一个实施例中，该方法考虑并确定色散补偿模块（DCM）的位置，其选择由DCM放置过程提供。
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4.发明授权Method for determining locations and gain settings of amplifiers in an optical network 有权用于确定光网络中的放大器的位置和增益设置的方法公开(公告)号：US07046426B2
公开(公告)日：2006-05-16
申请号：US10443058
申请日：2003-05-22
CPC分类号： H04B10/2933 , H04B10/2935
摘要： A method for determining locations and gain settings of optical amplifiers in an optical network is provided. The method comprises evaluating allowable amplifier locations and successively eliminating selected locations until no further locations can be eliminated without the network violating predetermined specifications. This systematic method is applicable to a variety of network topologies and takes into account existing network limitations. In one embodiment, the method for determining the locations and gain settings of the amplifiers uses the amount of operating margin in the network to select locations to be eliminated. In another embodiment, the method is repeated a number of times with different selections of amplifier locations, and the method providing the arrangement with the least number of amplifiers is chosen.
摘要翻译： 提供一种用于确定光网络中的光放大器的位置和增益设置的方法。 该方法包括评估允许的放大器位置并连续地消除所选择的位置，直到没有网络违反预定规格的情况下才能消除其他位置。 该系统方法适用于各种网络拓扑，并考虑到现有的网络限制。 在一个实施例中，用于确定放大器的位置和增益设置的方法使用网络中的操作裕度来选择要消除的位置。 在另一个实施例中，通过不同的放大器位置的选择重复该方法多次，并且选择提供具有最少数量的放大器的布置的方法。
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公开(公告)号：US06832019B2
公开(公告)日：2004-12-14
申请号：US10440222
申请日：2003-05-19
申请人： Colin Geoffrey Kelly
发明人： Colin Geoffrey Kelly
IPC分类号： G02B628
CPC分类号： G02B6/2932 , G02B6/29383
摘要： Devices and methods are provided for a re-configurable optical add/drop multiplexer (ROADM) having a static circulator, a selectable grating and a reversible circulator. The use of a reversible circulator in a known optical drop multiplexer configuration allows the selectable grating to be used for selecting both the add-wavelength and the drop-wavelength while maintaining an East/West architectural split to allow for SONET compliant maintenance. This invention provides a cost-effective enhancement to a duplex reflective wavelength selective ROADM.
摘要翻译： 为具有静态循环器，可选光栅和可逆循环器的可重新配置的光分插复用器（ROADM）提供了器件和方法。 在已知的光分路复用器配置中使用可逆循环器允许可选光栅用于选择添加波长和波长波长，同时保持东/西结构分割以允许SONET兼容维护。 本发明提供了对双反射波长选择性ROADM的成本有效的增强。
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6.发明授权Reconfigurable optical add/drop multiplexer with buried dispersion compensation module 失效具有埋入色散补偿模块的可重配置光分插复用器公开(公告)号：US06931176B2
公开(公告)日：2005-08-16
申请号：US10636664
申请日：2003-08-08
申请人： Colin Geoffrey Kelly
发明人： Colin Geoffrey Kelly
CPC分类号： H04J14/021 , H04J14/0205 , H04J14/0206
摘要： Apparatuses and methods are provided for chromatic dispersion compensation of wavelength division multiplexed (WDM) optical signals within an optical add/drop multiplexer (OADM) and especially within a remotely reconfigurable add/drop multiplexer (RROADM). The arrangement is especially useful in metro or regional networks where RROADMs can be dynamically reconfigured to deliver signals from any node to any other node. A dispersion compensation module (DCM) is located in the multiplexed through path of the RROADM between the drop module and the add module such that only wavelengths passing through the RROADM are compensated and shorter optical paths traversing only one span between adjacent nodes are not compensated. This allows lower cost static DCMs to be used, allows more flexibility in DCM values and allows fewer DCMs to be used while maintaining dispersion limits.
摘要翻译： 提供了用于在光分插复用器（OADM）内，特别是在远程可重配置分插复用器（RROADM）内的波分复用（WDM）光信号的色散补偿的装置和方法。 这种安排在城域网或区域网络中特别有用，其中RROADM可以被动态地重新配置，以将信号从任何节点传递到任何其他节点。 色散补偿模块（DCM）位于落下模块和添加模块之间的RROADM的多路复用通路中，使得仅通过RROADM的波长被补偿，并且不补偿在相邻节点之间穿过仅一个跨距的较短光路。 这允许使用更低成本的静态DCM，允许DCM值更灵活，并允许使用更少的DCM，同时保持色散限制。
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公开(公告)号：US07248798B2
公开(公告)日：2007-07-24
申请号：US10259290
申请日：2002-09-30
CPC分类号： H04J14/0227 , H04B10/00 , H04B2210/071 , H04B2210/074 , H04B2210/075 , H04B2210/077 , H04B2210/078 , H04J14/0258 , H04J14/0267 , H04J14/0276 , H04J14/0278 , H04J14/0298
摘要： A method and system for identification of a channel in an optical network is provided. The channel is identified by the use of unique combinations of two or more low frequencies, or tones, modulated onto the channel and optionally, a network parameter associated with the channel.
摘要翻译： 提供了一种用于识别光网络中的信道的方法和系统。 信道通过使用调制到信道上的两个或多个低频或音调的独特组合来识别，并且可选地使用与该信道相关联的网络参数。
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公开(公告)号：US07142783B2
公开(公告)日：2006-11-28
申请号：US10452511
申请日：2003-06-03
IPC分类号： H04B10/08
CPC分类号： H04J14/0227 , H04B10/00 , H04B2210/071 , H04B2210/074 , H04B2210/075 , H04B2210/077 , H04B2210/078 , H04J14/0258 , H04J14/0267 , H04J14/0276 , H04J14/0278 , H04J14/0298
摘要： A method and system for identification of a channel in an optical network is provided. The channel is identified by the use of unique combinations of two or more low frequencies, or tones, modulated onto the channel and optionally, a network parameter associated with the channel.
摘要翻译： 提供了一种用于识别光网络中的信道的方法和系统。 信道通过使用调制到信道上的两个或多个低频或音调的独特组合来识别，并且可选地使用与该信道相关联的网络参数。
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公开(公告)号：US06674935B2
公开(公告)日：2004-01-06
申请号：US09880811
申请日：2001-06-15
IPC分类号： G02B628
CPC分类号： H04J14/0213 , H04J14/0206 , H04J14/0209 , H04J14/0212 , H04J14/0219
摘要： An optical connection arrangement is provided in an optical path to facilitate changing optical add/drop multiplexer (OADM) and other optical component modules while optical traffic is present on the optical path, with minimal interruption to such traffic. The connection arrangement has a plurality of optical ports to each of which an optical component can be coupled, and one or more optical switches which can be controlled to selectively include in the optical path or bypass each optical port. Such connection arrangements can be coupled in series and/or in parallel for convenient modular add/drop configurations and for opposite directions of transmission of optical traffic on respective optical paths.
摘要翻译： 在光路中提供光学连接装置，以便在光学通信存在于光路上，同时对这种业务的中断最小化的同时便于改变光分插复用器（OADM）和其它光学组件模块。 连接装置具有多个光学端口，每个光学部件可以耦合到其中，并且可以控制一个或多个光学开关以选择性地包括在光路中或绕过每个光学端口。 这种连接装置可以串联和/或并联耦合以便于模块化的分插配置以及相应光路上的光通信的相反方向传输。
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10.发明授权公开(公告)号：US08014668B2
公开(公告)日：2011-09-06
申请号：US12017041
申请日：2008-01-20
申请人： Ping Wai Wan , Derrick Remedios , Patrick Chilufya Chimfwembe , Colin Geoffrey Kelly , James Benson Bacque
发明人： Ping Wai Wan , Derrick Remedios , Patrick Chilufya Chimfwembe , Colin Geoffrey Kelly , James Benson Bacque
CPC分类号： H04B10/0775 , H04B2210/075 , H04B2210/078
摘要： A method and apparatus for distributed measurement of chromatic dispersion in an optical network is disclosed. The network comprises optical switching nodes interconnected by optical links. An optical link may comprise multiple spans, each span ending in a transport module which comprises signal-processing components. At least one optical switching node has a probing signal generator transmitting an optical probing signal along a selected path in the network. Probing-signal detectors placed at selected transport modules determine chromatic-dispersion values and send results to a processing unit which determines appropriate placement of compensators or appropriate adjustments of compensators placed along the path. A preferred probing signal has the form of wavelength modulated optical carrier which is further intensity modulated by a periodic, preferably sinusoidal, probing tone. Variation in the phase-shift of the probing tone corresponding to variation of the wavelength of the optical probing signal determines chromatic-dispersion characteristics for different spans of the path.
摘要翻译： 公开了一种用于分布式测量光网络色散的方法和装置。 网络包括通过光链路互连的光交换节点。 光链路可以包括多个跨度，每个跨度结束于传输模块，其包括信号处理组件。 至少一个光交换节点具有探测信号发生器，沿着网络中的选定路径发射光探测信号。 放置在所选传输模块处的探测信号检测器确定色散值并将结果发送到处理单元，该处理单元确定补偿器的适当位置或沿路径放置的补偿器的适当调整。 优选的探测信号具有波长调制光载波的形式，其进一步通过周期性的，优选正弦的探测色调进行强度调制。 与光探测信号的波长变化相对应的探测音的相移的变化确定了路径不同跨度的色散特性。
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