公开(公告)号：US08467678B2

公开(公告)日：2013-06-18

申请号：US12544571

申请日：2009-08-20

申请人： David W. Jenkins ,  Julia Y. Larikova ,  Richard C. Younce

发明人： David W. Jenkins ,  Julia Y. Larikova ,  Richard C. Younce

IPC分类号： H04B10/08

CPC分类号： H04B10/07 ,  H04L41/12 ,  H04L41/145 ,  H04L45/02 ,  H04L45/70

摘要： Increasing data rates in next-generation optical networks requires a change in the type of optical modulation used to encode optical signals carried by the optical networks. Different types of optical modulation incur different optical impairments, which may degrade the fidelity of the optical signals by reducing the optical signal-to-noise ratio (OSNR). A method or corresponding apparatus in an example embodiment of the present invention provides a planning tool for deploying an optical network in a manner based on the optical modulation that reduces the cost and complexity of the deployed network. In one embodiment, the disclosed planning tool may adjust a model of the optical network to be deployed by changing the topology and/or the number and/or type of optical network elements in response to optical impairments for a given optical modulation.

摘要翻译： 在下一代光网络中增加数据速率需要改变用于编码由光网络承载的光信号的光调制类型。 不同类型的光学调制产生不同的光学损伤，这可能通过降低光信噪比（OSNR）来降低光信号的保真度。 在本发明的示例性实施例中的方法或相应装置提供了一种用于以基于光调制的方式部署光网络的规划工具，所述光调制降低了部署网络的成本和复杂性。 在一个实施例中，所公开的规划工具可以响应于给定光学调制的光学损伤，通过改变光网络元件的拓扑和/或数量和/或类型来调整要部署的光网络的模型。

公开(公告)号：US08374510B2

公开(公告)日：2013-02-12

申请号：US12221697

申请日：2008-08-06

申请人： Julia Y. Larikova ,  Richard C. Younce

发明人： Julia Y. Larikova ,  Richard C. Younce

IPC分类号： H04B10/04 ,  H04B10/08

CPC分类号： H04B10/671

摘要： High optical communication rates are making their way into networks initially designed for 10 Gigabits per seconds (Gbps). These higher rates of 40 Gbps and higher have shorter signaling periods and are more susceptible to differential group delay (DGD). A method and corresponding apparatus in an example embodiment of the present invention compensates for polarization state sensitivity of a receiver by determining a performance metric relating to an error rate due to transmission and reception of a modulated optical signal in a medium introducing DGD. Based on the performance metric, a control vector is determined to control a polarization state of the modulated optical signal. The control vector is applied to a polarization effecting device to compensate for the DGD and the polarization state sensitivity of the receiver. Communication rates of 40 Gbps and higher can be used in transmission mediums that introduce DGD through use of embodiments presented.

公开(公告)号：US20100040364A1

公开(公告)日：2010-02-18

申请号：US12228763

申请日：2008-08-15

申请人： David W. Jenkins ,  Ramasubramanian Anand ,  Hector Ayala ,  Julia Y. Larikova ,  Kenneth M. Fisher

发明人： David W. Jenkins ,  Ramasubramanian Anand ,  Hector Ayala ,  Julia Y. Larikova ,  Kenneth M. Fisher

IPC分类号： H04B10/08

CPC分类号： H04B10/27 ,  H04B10/275

摘要： Signals propagating in wavelength division multiplexing (WDM) optical networks suffer from loss, which decreases optical signal-to-noise ratios (OSNRs) and degrades a quality of received transmissions. Present methods of boosting OSNRs involve regeneration using transponders, which scale in complexity with the number of WDM channels. Optical amplifiers may boost signal strength, but amplified spontaneous emission (ASE) noise often reduces OSNR despite increases in signal strength, although changing the amplifier operating settings may reduce emitted ASE noise power. A method or corresponding apparatus in an example embodiment of the present invention provides a planning tool for deploying optical amplifiers in an optical network in a manner that reduces the need for optical regeneration, reducing cost and complexity of the deployed network. In one embodiment, the disclosed planning tool may substitute models of high-gain amplifiers operating at low settings for models of low-gain amplifiers operating at high settings.

摘要翻译： 在波分复用（WDM）光网络中传播的信号遭受损失，这降低了光信噪比（OSNR），并降低了接收传输的质量。 目前提升OSNR的方法涉及使用转发器的再生，这些应答器的复杂度随着WDM信道的数量而增加。 光放大器可以提高信号强度，但放大的自发发射（ASE）噪声通常会降低OSNR，尽管信号强度有所增加，尽管改变放大器工作设置可能会降低发射的ASE噪声功率。 在本发明的示例性实施例中的方法或相应的装置提供了一种用于在光网络中部署光放大器的规划工具，其方法是减少对光学再生的需要，降低部署网络的成本和复杂性。 在一个实施例中，所公开的规划工具可替代以低设置操作的高增益放大器的模型，用于在高设置下工作的低增益放大器的模型。

公开(公告)号：US20090142070A1

公开(公告)日：2009-06-04

申请号：US11998440

申请日：2007-11-29

申请人： Mark E. Boduch ,  Kimon Papakos ,  Julia Y. Larikova

发明人： Mark E. Boduch ,  Kimon Papakos ,  Julia Y. Larikova

IPC分类号： H04B10/12

CPC分类号： H04B10/0775

摘要： An example embodiment of the invention includes a method and apparatus for supporting fiber span loss and dispersion measurements in the presence or absence of dispersion compensation elements (DCE). The technique may be used to configure a network link by accessing an optical signal at an ingress side of a connection point for a DCE coupling an egress side of a fiber span at the ingress side of the DCE to an optical amplifier at a connection point for an egress side of the DCE. The technique may include determining chromatic dispersion of the fiber span based on the optical signal and reporting information associated with chromatic dispersion. As a result, the technique may be used, for example, during initial system installation when user data signals and the DCE are not present as well as after the network begins carrying user traffic and after a DCE has been installed.

摘要翻译： 本发明的一个示例性实施例包括一种在存在或不存在色散补偿元件（DCE）的情况下支持光纤跨度损耗和色散测量的方法和装置。 该技术可以用于通过访问DCE连接点的连接点的入口侧的光信号来配置网络链路，DCE将DCE的入口侧的光纤跨度的出口侧耦合到光放大器的连接点处， DCE的出口端。 该技术可以包括基于光信号和与色散相关联的报告信息确定光纤跨度的色散。 因此，例如，当用户数据信号和DCE不存在以及网络开始承载用户业务之后并且在DCE已经被安装之后，例如在初始系统安装期间可以使用该技术。

公开(公告)号：US08965220B2

公开(公告)日：2015-02-24

申请号：US12044322

申请日：2008-03-07

申请人： Julia Y. Larikova ,  Richard C. Younce ,  Mark E. Boduch

发明人： Julia Y. Larikova ,  Richard C. Younce ,  Mark E. Boduch

IPC分类号： H04J14/00 ,  H04J14/02

CPC分类号： H04J14/0213 ,  H04J14/0205 ,  H04J14/0206 ,  H04J14/0209 ,  H04J14/0212 ,  H04J14/0217 ,  H04J14/0219 ,  H04J14/0221

摘要： A reconfigurable optical add drop multiplexer (ROADM) includes local interfaces at which optical signals of different wavelengths are locally input into the ROADM, and a network interface configured to connect the ROADM to a network from which multiplexed optical signals of different wavelengths are transmitted to the network. In a first configuration, the ROADM is configured to transmit from the network interface to the network multiplexed signals of different wavelengths having a first minimum frequency difference. In a second configuration, the ROADM is configured to transmit from the network interface to the network multiplexed signals of different wavelengths having a second minimum frequency difference. The second minimum frequency difference is greater than the first minimum frequency difference. This arrangement reduces the power of four wave mixing cross products produced when optical signals of three wavelengths are multiplexed and transmitted from the ROADM to NZDSF or DSF fiber types.

摘要翻译： 可重构光分插复用器（ROADM）包括本地接口，不同波长的光信号被本地输入到ROADM中，以及网络接口，被配置为将ROADM连接到网络，从该网络将不同波长的复用光信号传输到 网络。 在第一配置中，ROADM被配置为从网络接口向具有第一最小频率差的不同波长的网络复用信号进行发送。 在第二配置中，ROADM被配置为从网络接口向具有第二最小频率差的不同波长的网络复用信号进行发送。 第二最小频率差大于第一最小频率差。 这种布置降低了由三路波长的光信号从ROADM复用到NZDSF或DSF光纤类型时产生的四个波混合交叉产品的功率。

公开(公告)号：US08614850B2

公开(公告)日：2013-12-24

申请号：US13188056

申请日：2011-07-21

申请人： Larry Michael Wolfrum ,  Julia Y. Larikova ,  Richard Cleveland Younce

发明人： Larry Michael Wolfrum ,  Julia Y. Larikova ,  Richard Cleveland Younce

IPC分类号： H04B10/17 ,  H04B10/12

CPC分类号： H04B10/294 ,  H04B10/0797

摘要： An embodiment of the invention comprises determining a gain tilt based on power measurements from a power measurement block, determining a noise figure penalty based on the gain tilt, determining a gain tilt compensation to compensate for the gain tilt taking into account the noise figure penalty, and communicating the gain tilt compensation to an amplifier block to apply the gain tilt compensation to subsequently received wavelengths.

摘要翻译： 本发明的实施例包括基于来自功率测量块的功率测量来确定增益倾斜，基于增益倾斜确定噪声指数损失，确定增益倾斜补偿以补偿考虑到噪声系数损失的增益倾斜， 并将增益倾斜补偿传送到放大器块，以将增益倾斜补偿应用于随后接收的波长。

公开(公告)号：US20100142956A1

公开(公告)日：2010-06-10

申请号：US12330331

申请日：2008-12-08

申请人： Julia Y. Larikova ,  Richard C. Younce ,  Mary E. Mizialko ,  Robert D. Gatze

发明人： Julia Y. Larikova ,  Richard C. Younce ,  Mary E. Mizialko ,  Robert D. Gatze

IPC分类号： H04J14/02

CPC分类号： H04J14/02 ,  H04B10/2507 ,  H04B10/572 ,  H04J14/0221

摘要： Higher rate channels (e.g., 40 Giga bits or greater) have large bandwidths and are susceptible to inter-channel crosstalk. Optical tunable filters may be used to overcome crosstalk. Tunable filters do not maintain their central wavelength over a long duration or a wide temperature range. An example embodiment of the present invention relates to shaping a channel signal within a dense wavelength division multiplexing signal and may employ a tunable filter and input and output optical power detectors to measure a modulated source channel signal at an input of the tunable filter and a filtered modulated source channel signal at an output of the tunable filter. A controller is configured to adjust a center wavelength of the tunable filter as a function of a difference between measurements of optical power by the optical power detectors. Adjusting the center wavelength shapes the channel signal and overcomes undesired effects for higher rate channels.

摘要翻译： 更高的速率信道（例如，40G比特或更大）具有大的带宽并且易于发生信道间串扰。 可以使用光可调谐滤波器来克服串扰。 可调滤波器在长时间或宽温度范围内不能保持其中心波长。 本发明的示例性实施例涉及在密集波分复用信号中对信道信号进行整形，并且可以采用可调谐滤波器和输入和输出光功率检测器来测量可调滤波器的输入端处的调制源信道信号，并且滤波 在可调滤波器的输出处调制源信道信号。 控制器被配置为根据光功率检测器的光功率的测量值之间的差异来调节可调谐滤波器的中心波长。 调整中心波长会形成通道信号，并克服对较高速率通道的不良影响。

公开(公告)号：US09130692B2

公开(公告)日：2015-09-08

申请号：US13453416

申请日：2012-04-23

申请人： David William Jenkins ,  Julia Y. Larikova ,  Richard C. Younce

发明人： David William Jenkins ,  Julia Y. Larikova ,  Richard C. Younce

IPC分类号： H04J14/00 ,  H04J14/02

CPC分类号： H04J14/0204 ,  H04J14/0212 ,  H04J14/0217

摘要： A method for routing C-band and L-band optical signals, and a system, apparatus, and computer program that operate in accordance with the method. The method comprises selecting one or more C-band optical signals using one or more C-band components, resulting in one or more selected C-band optical signals. One or more L-band optical signals are selected using one or more L-band components, resulting in one or more selected L-band optical signals. The selected C-band and L-band optical signals are combined.

摘要翻译： 一种用于路由C波段和L波段光信号的方法，以及根据该方法操作的系统，装置和计算机程序。 该方法包括使用一个或多个C波段分量来选择一个或多个C波段光信号，产生一个或多个选择的C波段光信号。 使用一个或多个L波段分量选择一个或多个L波段光信号，得到一个或多个选择的L波段光信号。 所选择的C波段和L波段光信号被组合。

公开(公告)号：US20150208146A1

公开(公告)日：2015-07-23

申请号：US14281122

申请日：2014-05-19

申请人： Richard Y. Younce ,  Yajun Wang ,  Julia Y. Larikova ,  Rafid Sukkar

发明人： Richard Y. Younce ,  Yajun Wang ,  Julia Y. Larikova ,  Rafid Sukkar

IPC分类号： H04Q11/00 ,  H04B10/079 ,  H04B10/071 ,  H04J14/02

CPC分类号： H04Q11/0066 ,  H04B10/071 ,  H04B10/0773 ,  H04B10/0791 ,  H04J14/0206 ,  H04J14/0212 ,  H04J14/0217 ,  H04J14/0267 ,  H04J14/0275 ,  H04Q2011/0015 ,  H04Q2011/0083

摘要： Method and apparatus of an optical routing system (“ORS”) capable of automatically discovering intra-nodal fiber connections using a test channel transceiver (“TCT”) are disclosed. ORS, in one embodiment, includes a set of reconfigurable optical add-drop multiplexer (“ROADM”) modules, intra-nodal fiber connections, add-drop modules, and a test module. The ROADM modules are able to transmit or receive optical signals via optical fibers. The intra-nodal fiber connections are configured to provide optical connections. The add-drop modules are able to selectively make connections between input ports and output ports. The test module containing TCT is configured to identify at least a portion of intra-nodal connections of the ROADM via a test signal operating with a unique optical frequency.

摘要翻译： 公开了能够使用测试通道收发器（“TCT”）自动发现节点内光纤连接的光路由系统（“ORS”）的方法和装置。 ORS在一个实施例中包括一组可重新配置的光分插复用器（“ROADM”）模块，节点内光纤连接，分插模块和测试模块。 ROADM模块能够通过光纤传输或接收光信号。 节点内光纤连接被配置为提供光学连接。 该插件模块能够选择性地在输入端口和输出端口之间建立连接。 包含TCT的测试模块被配置为通过以唯一光频率操作的测试信号来识别ROADM的节点内连接的至少一部分。

公开(公告)号：US09020365B2

公开(公告)日：2015-04-28

申请号：US12082091

申请日：2008-04-08

申请人： Richard C. Younce ,  Julia Y. Larikova

发明人： Richard C. Younce ,  Julia Y. Larikova

IPC分类号： H04B10/12 ,  H04B10/00 ,  H04B10/06 ,  H04B10/2569 ,  H04B10/61 ,  H04B10/079

CPC分类号： H04B10/2569 ,  H04B10/07953 ,  H04B10/6162

摘要： Current optical networks are engineered to handle amplifier noise and chromatic dispersion. Polarization mode dispersion occurs in optical networks due splitting of the light energy of a pulse propagating in a fiber into two modes. Compensating for polarization mode dispersion is a difficult and expensive task and hence only few commercial systems have been deployed to deal with this issue. A polarization mode dispersion compensation module according to an example embodiment of the present invention compensates for polarization mode dispersion by determining a performance metric related to an error rate of an optical signal in at least one polarization mode in a filtered state. Based on the performance metric, a control vector is determined to control the optical signal in the at least one polarization mode in the filtered state. The control vector is then applied to a polarization effecting device to compensate for polarization mode dispersion.