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1.发明授权Method and apparatus for gain excursion minimization in automatic gain controlled optical systems 有权自动增益控制光学系统中增益偏移最小化的方法和装置公开(公告)号：US06903867B2
公开(公告)日：2005-06-07
申请号：US10195495
申请日：2002-07-16
CPC分类号： H04B10/2942 , H04B10/2935
摘要： An apparatus and method for minimizing channel gain excursion in an optical system with automatic gain control is provided. The apparatus includes a feedback control loop which dynamically regulates the target gain of an automatic gain controlled (AGC) amplifier so as to compensate for the action of the AGC amplifier to maintain a constant linear average gain without accounting for the distribution of channels that carry signals across the amplifier spectral gain profile, which causes gain excursion of individual channels. The feedback control loop measures gain of individual channels and uses these measurements to regulate the target gain of the amplifier so as to minimize gain excursion of individual channels. If required, the apparatus may be integrated into a package. In one embodiment, the method for regulating the target gain is to maintain constant gain for all channels irrespective of the number of channels that carry a signal. This method is simple and guarantees no gain excursion. In another embodiment, a weight is assigned to an individual channel to calculate a weighted average for the target gain of the amplifier while attempting to minimize gain excursion of individual channels.
摘要翻译： 提供一种用于使具有自动增益控制的光学系统中的通道增益偏移最小化的装置和方法。 该装置包括反馈控制回路，其动态地调节自动增益控制（AGC）放大器的目标增益，以便补偿AGC放大器的动作以维持恒定的线性平均增益，而不考虑携带信号的信道的分布 在放大器频谱增益曲线上，这导致单个通道的增益偏移。 反馈控制环路测量单个通道的增益，并使用这些测量来调节放大器的目标增益，以便最小化各个通道的增益偏移。 如果需要，该装置可以集成到包装中。 在一个实施例中，用于调节目标增益的方法是保持所有通道的恒定增益，而不管携带信号的通道数量如何。 这种方法很简单，保证没有增益偏移。 在另一个实施例中，将权重分配给单个信道以计算放大器的目标增益的加权平均值，同时尝试最小化各个信道的增益偏移。
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2.发明授权Method for network commissioning using amplified spontaneous emission (ASE) sources 失效使用放大自发辐射（ASE）来源进行网络调试的方法公开(公告)号：US07321727B2
公开(公告)日：2008-01-22
申请号：US11178330
申请日：2005-07-12
申请人： Eddie Kai Ho Ng , Jason Christopher De Rocher , Derrick Remedios , James Benson Bacque , Ping Wai Wan
发明人： Eddie Kai Ho Ng , Jason Christopher De Rocher , Derrick Remedios , James Benson Bacque , Ping Wai Wan
CPC分类号： H04B10/075 , H04B10/0775 , H04J14/0227 , H04J14/0241 , H04J14/0283
摘要： This invention provides a method for commissioning an optical network using internal Automatic Spontaneous Emission (ASE) light inherently present in the optical network as a light source (the ASE light source) for measuring losses inside and between nodes in the network. A modular segmented approach is adopted and the network is commissioned segment by segment. The method uses techniques for the correction of the Optical Signal to Noise Ratio induced error as well as the Spectral Filtering Error during the loss computation required for adjusting the gains of the amplifiers at each network node to an appropriate value. Since the method does not require an external laser source that needs to be moved manually from node to node, it greatly reduces the commissioning time. Since it uses only the existing components of the network nodes it also leads to a significant saving in cost.
摘要翻译： 本发明提供一种使用光网络中固有存在的内部自发自发发射（ASE）光作为用于测量网络内部和节点之间的损耗的光源（ASE光源）来调试光网络的方法。 采用模块化分段方式，逐段调试网络。 该方法使用用于校正光信噪比诱导误差的技术以及在将每个网络节点处的放大器的增益调整到适当值所需的损耗计算期间的光谱滤波误差。 由于该方法不需要需要从节点手动移动的外部激光源，因此大大减少了调试时间。 由于它仅使用网络节点的现有组件，因此也可大大节省成本。
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公开(公告)号：US07068932B2
公开(公告)日：2006-06-27
申请号：US10260621
申请日：2002-10-01
申请人： Ping Wai Wan , Derrick Remedios , Eddie Kai Ho Ng
发明人： Ping Wai Wan , Derrick Remedios , Eddie Kai Ho Ng
CPC分类号： H04B10/2942 , H04B10/2935
摘要： A method for automatic initialization of an optical network is provided. A network management system (NMS) performs remote determination of span losses and sets the operating points of network components. The initialization method comprises remotely and automatically setting target gains of optical amplifiers and signal power levels at transmitters and receivers to required operating values. The methods for initialization of the optical network of the embodiments include gain excursion minimization (GEM) for individual channels passing through amplifiers and/or pre-emphasis of the optical link, where channel powers at the transmitters are biased to compensate for the effects of optical amplifiers gain ripple.
摘要翻译： 提供了一种用于光网络的自动初始化的方法。 网络管理系统（NMS）执行远程确定跨度损耗并设置网络组件的工作点。 初始化方法包括将发射机和接收机的光放大器的目标增益和信号功率电平远程并自动设置为所需的操作值。 实施例的光网络的初始化方法包括通过放大器的各个信道的增益偏移最小化（GEM）和/或光链路的预加重，其中在发射机处的信道功率被偏置以补偿光学效应 放大器增益波动。
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4.发明授权Method for network commissioning and upgrading using amplified spontaneous emission (ASE) sources 有权使用放大自发辐射（ASE）来源进行网络调试和升级的方法公开(公告)号：US07652816B2
公开(公告)日：2010-01-26
申请号：US11615953
申请日：2006-12-23
申请人： Jason Christopher De Rocher , Hamish Iain MacDonald , Walter Joseph Carpini , Eddie Kai Ho Ng , Derrick Remedios , James Benson Bacque , Ping Wai Wan
发明人： Jason Christopher De Rocher , Hamish Iain MacDonald , Walter Joseph Carpini , Eddie Kai Ho Ng , Derrick Remedios , James Benson Bacque , Ping Wai Wan
CPC分类号： H04B10/275
摘要： This invention provides a method for commissioning and upgrading an optical ring network using its internal amplifiers as Automatic Spontaneous Emission sources of light that are used in making measurements. A modular segmented approach is adopted and the network is commissioned segment by segment. A flexible method is used for upgrading a commissioned network by adding or deleting a node or changing the internal configuration of a node. The method uses techniques for the correction of the Optical Signal to Noise Ratio induced error as well as the Spectral Filtering Error during the loss computation required for adjusting the gains of the amplifiers at each network node to an appropriate value. Since the method does not require an external laser source that needs to be moved manually from node to node it greatly reduces the commissioning time. Since it uses only the components of the network itself and does not deploy any additional device it also leads to a significant saving in cost.
摘要翻译： 本发明提供了一种使用其内部放大器调试和升级光环网络的方法，所述放大器是用于进行测量的自动自发发射光源。 采用模块化分段方式，逐段调试网络。 灵活的方法用于通过添加或删除节点或更改节点的内部配置来升级委托网络。 该方法使用用于校正光信噪比诱导误差的技术以及在将每个网络节点处的放大器的增益调整到适当值所需的损耗计算期间的光谱滤波误差。 由于该方法不需要需要从节点手动移动的外部激光源，因此大大减少了调试时间。 由于它仅使用网络组件本身，并且不部署任何其他设备，因此也可大大节省成本。
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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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6.发明授权Methods and apparatus for detecting a faulty component location along an optical path in an optical network 有权用于检测沿着光网络中的光路的故障部件位置的方法和装置公开(公告)号：US07139069B2
公开(公告)日：2006-11-21
申请号：US11065098
申请日：2005-02-25
IPC分类号： G01N21/00
CPC分类号： H04B10/077 , H04B10/07955
摘要： A multi-stage method and apparatus for determining a faulty component location along an optical path through an optical fiber in an optical network are disclosed. A total power of the optical fiber, and a total wavelength power as a sum of powers of the individual wavelengths at a plurality of local detection points are measured and compared at the local detection points, followed by determining whether or not a faulty detection point exists along the optical path. If a fault is identified, the method provides a multi-stage fault detection procedure, including measuring a total wavelength power loss between a local detection point and an adjacent detection point, between the local detection point and multiple non-adjacent detection points, and a correlation of the measured total wavelength power losses between the various detection points. A corresponding apparatus for determining the faulty component location in the optical network is also provided.
摘要翻译： 公开了一种用于通过光网络中的光纤确定沿着光路的故障部件位置的多级方法和装置。 在本地检测点测量光纤的总功率和总波长功率作为多个本地检测点处的各个波长的功率之和，然后确定是否存在故障检测点 沿光路。 如果识别故障，则该方法提供多级故障检测程序，包括测量本地检测点与相邻检测点之间，本地检测点与多个非相邻检测点之间的总波长功率损耗，以及 在各种检测点之间测量的总波长功率损耗的相关性。 还提供了用于确定光网络中的故障组件位置的相应设备。
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7.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：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：US07391971B2
公开(公告)日：2008-06-24
申请号：US10621413
申请日：2003-07-18
IPC分类号： H04B17/00
CPC分类号： H04B10/077 , H04B10/07955
摘要： A method for powering up an optical network is provided. The method comprises remotely and safely increasing power to optical links in the optical network while monitoring signal levels in the network to discover installation errors, incorrect equipment configuration, and faulty components. In a modification to the method, attenuations of optical attenuators and gain values of optical amplifiers are set. The methods for powering up the optical network of the embodiments of the invention apply to both new optical networks and to new optical links added to pre-existing optical networks.
摘要翻译： 提供了一种用于为光网络加电的方法。 该方法包括远程和安全地增加光网络中光链路的功率，同时监视网络中的信号电平，以发现安装错误，错误的设备配置和故障组件。 在该方法的修改中，设置光衰减器的衰减和光放大器的增益值。 用于为本发明的实施例的光网络供电的方法适用于新光网络和添加到预先存在的光网络的新光链路。
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10.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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