公开(公告)号：US20140334813A1

公开(公告)日：2014-11-13

申请号：US14337919

申请日：2014-07-22

Applicant: Cisco Technology, Inc.

Inventor： Rosanna Pastorelli ,  Stefano Piciaccia ,  Alberto Tanzi ,  Eliana Silvia Vercelli

IPC: H04B10/079

CPC classification number: H04B10/0795 ,  H04B10/0793 ,  H04J14/0227 ,  H04J14/0257 ,  H04J14/0258 ,  H04J14/0267 ,  H04J14/0269 ,  H04J14/0271 ,  H04Q11/0062 ,  H04Q2011/0073 ,  H04Q2011/0086

Abstract: In an optical communication network that includes a plurality of interconnected network nodes, a method includes storing in each network node, and for each communication channel that traverses the node, one or more impairment margins of respective impairments that affect the communication channel. A potential communication channel that traverses a subset of the nodes in the network is identified. A quality of the potential communication channel is evaluated by processing the impairment margins stored in the nodes in the subset.

Abstract translation: 在包括多个互连网络节点的光通信网络中，一种方法包括在每个网络节点中以及对于遍历节点的每个通信信道存储影响通信信道的各个损伤的一个或多个损伤余量。 识别遍历网络中节点子集的潜在通信信道。 潜在通信信道的质量通过处理存储在子集中的节点中的减值裕度来评估。

公开(公告)号：US20160211643A1

公开(公告)日：2016-07-21

申请号：US14601570

申请日：2015-01-21

Applicant: Cisco Technology, Inc.

Inventor： Enrico Griseri ,  Mauro Brunella ,  Rosanna Pastorelli ,  Stefano Piciaccia

IPC: H01S3/13 ,  H04J14/02 ,  H04B10/079 ,  H01S3/30 ,  H01S3/131

CPC classification number: H01S3/1301 ,  H01S3/094096 ,  H01S3/10069 ,  H01S3/1305 ,  H01S3/302 ,  H01S2301/04 ,  H04B10/0797 ,  H04B10/2916 ,  H04B10/293 ,  H04J14/0221

Abstract: An optical fiber carries optical channels injected into the optical fiber to a Raman amplifier. A controller determines a static tilt associated with the channels in the fiber due to wavelength dependent losses. A photodiode measures a total power of the channels at an output of the Raman amplifier. The controller determines a dynamic tilt associated with channels in the fiber based in part on the measured total power. The dynamic tilt is induced by Stimulated Raman Scattering (SRS) in the fiber and varies as a function of a total power of the signals injected into the fiber. The controller determines a total tilt with which to offset the static and dynamic tilts. The controller sets an amplifier gain tilt applied to the channels equal to the total tilt.

Abstract translation: 光纤将注入光纤的光通道传送到拉曼放大器。 由于波长相关的损失，控制器确定与光纤中的通道相关联的静态倾斜。 光电二极管测量拉曼放大器输出端的通道总功率。 部分地基于测量的总功率，控制器确定与光纤中的信道相关联的动态倾斜。 动态倾斜由纤维中的受激拉曼散射（SRS）引起，并且随着注入光纤的信号的总功率的变化而变化。 控制器确定用于抵消静态和动态倾斜的总倾斜度。 控制器设置施加到等于总倾斜的通道的放大器增益倾斜。

公开(公告)号：US09455546B2

公开(公告)日：2016-09-27

申请号：US14601570

申请日：2015-01-21

Applicant: Cisco Technology, Inc.

Inventor： Enrico Griseri ,  Mauro Brunella ,  Rosanna Pastorelli ,  Stefano Piciaccia

IPC: H01S3/00 ,  H01S3/13 ,  H01S3/30 ,  H01S3/131 ,  H04B10/079 ,  H04J14/02

CPC classification number: H01S3/1301 ,  H01S3/094096 ,  H01S3/10069 ,  H01S3/1305 ,  H01S3/302 ,  H01S2301/04 ,  H04B10/0797 ,  H04B10/2916 ,  H04B10/293 ,  H04J14/0221

Abstract: An optical fiber carries optical channels injected into the optical fiber to a Raman amplifier. A controller determines a static tilt associated with the channels in the fiber due to wavelength dependent losses. A photodiode measures a total power of the channels at an output of the Raman amplifier. The controller determines a dynamic tilt associated with channels in the fiber based in part on the measured total power. The dynamic tilt is induced by Stimulated Raman Scattering (SRS) in the fiber and varies as a function of a total power of the signals injected into the fiber. The controller determines a total tilt with which to offset the static and dynamic tilts. The controller sets an amplifier gain tilt applied to the channels equal to the total tilt.

Abstract translation: 光纤将注入光纤的光通道传送到拉曼放大器。 由于波长相关的损失，控制器确定与光纤中的通道相关联的静态倾斜。 光电二极管测量拉曼放大器输出端的通道总功率。 部分地基于测量的总功率，控制器确定与光纤中的信道相关联的动态倾斜。 动态倾斜由纤维中的受激拉曼散射（SRS）引起，并且随着注入光纤的信号的总功率的变化而变化。 控制器确定用于抵消静态和动态倾斜的总倾斜度。 控制器设置施加到等于总倾斜的通道的放大器增益倾斜。

公开(公告)号：US20150016819A1

公开(公告)日：2015-01-15

申请号：US13937613

申请日：2013-07-09

Applicant: Cisco Technology, Inc.

Inventor： Stefano Piciaccia ,  Rosanna Pastorelli ,  Mauro Brunella

IPC: H04B10/079

CPC classification number: H04B10/0793 ,  H04B10/0797 ,  H04B10/2935

Abstract: Techniques are presented for automatic tuning of operating parameters, e.g., amplifier gain, in an optical network. A section of an optical network comprises a plurality of spans between optical nodes, and each optical node has an amplifier to amplify optical signals for transmission between optical nodes. Physical network layer data is obtained from the optical nodes for use as input to an analytical model. A set of powers defining an optimum working point of the amplifiers is computed based on variations in amplifier noise figure which depend on amplifier gain. A figure of merit representative of network section performance is computed based on linear and non-linear noise at current power levels of the amplifiers. The figure of merit is evaluated. The set of powers is applied to the amplifiers in the network section when evaluation of the figure of merit indicates that network performance improvement can be achieved.

Abstract translation: 提出了用于在光网络中自动调整操作参数（例如，放大器增益）的技术。 光网络的一部分包括光节点之间的多个跨距，并且每个光节点具有放大器以放大用于在光节点之间传输的光信号。 物理网络层数据从光学节点获得，用作分析模型的输入。 基于取决于放大器增益的放大器噪声系数的变化来计算定义放大器的最佳工作点的一组功率。 基于放大器的当前功率电平的线性和非线性噪声来计算代表网络部分性能的品质因数。 评估品质因数。 当评估品质因数表示可以实现网络性能改善时，该功率集合被应用于网络部分中的放大器。

公开(公告)号：US09749042B2

公开(公告)日：2017-08-29

申请号：US14337919

申请日：2014-07-22

Applicant: Cisco Technology, Inc.

Inventor： Rosanna Pastorelli ,  Stefano Piciaccia ,  Alberto Tanzi ,  Eliana Silvia Vercelli

IPC: H04B10/08 ,  H04B17/00 ,  H04B10/079 ,  H04Q11/00 ,  H04J14/02

CPC classification number: H04B10/0795 ,  H04B10/0793 ,  H04J14/0227 ,  H04J14/0257 ,  H04J14/0258 ,  H04J14/0267 ,  H04J14/0269 ,  H04J14/0271 ,  H04Q11/0062 ,  H04Q2011/0073 ,  H04Q2011/0086

Abstract: In an optical communication network that includes a plurality of interconnected network nodes, a method includes storing in each network node, and for each communication channel that traverses the node, one or more impairment margins of respective impairments that affect the communication channel. A potential communication channel that traverses a subset of the nodes in the network is identified. A quality of the potential communication channel is evaluated by processing the impairment margins stored in the nodes in the subset.

公开(公告)号：US09083458B2

公开(公告)日：2015-07-14

申请号：US13937613

申请日：2013-07-09

Applicant: Cisco Technology, Inc.

Inventor： Stefano Piciaccia ,  Rosanna Pastorelli ,  Mauro Brunella

IPC: H04B17/00 ,  H04B10/079

CPC classification number: H04B10/0793 ,  H04B10/0797 ,  H04B10/2935

Abstract: Techniques are presented for automatic tuning of operating parameters, e.g., amplifier gain, in an optical network. A section of an optical network comprises a plurality of spans between optical nodes, and each optical node has an amplifier to amplify optical signals for transmission between optical nodes. Physical network layer data is obtained from the optical nodes for use as input to an analytical model. A set of powers defining an optimum working point of the amplifiers is computed based on variations in amplifier noise figure which depend on amplifier gain. A figure of merit representative of network section performance is computed based on linear and non-linear noise at current power levels of the amplifiers. The figure of merit is evaluated. The set of powers is applied to the amplifiers in the network section when evaluation of the figure of merit indicates that network performance improvement can be achieved.

Abstract translation: 提出了用于在光网络中自动调整操作参数（例如，放大器增益）的技术。 光网络的一部分包括光节点之间的多个跨距，并且每个光节点具有放大器以放大用于在光节点之间传输的光信号。 物理网络层数据从光学节点获得，用作分析模型的输入。 基于取决于放大器增益的放大器噪声系数的变化来计算定义放大器的最佳工作点的一组功率。 基于放大器的当前功率电平的线性和非线性噪声来计算代表网络部分性能的品质因数。 评价品质因数。 当评估品质因数表示可以实现网络性能改善时，该功率集合被应用于网络部分中的放大器。