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1.发明授权公开(公告)号：US06871020B1
公开(公告)日：2005-03-22
申请号：US09825019
申请日：2001-04-03
CPC分类号： H04J14/0221 , H04B10/07955 , H04J14/0201 , H04J14/0204 , H04J14/0205 , H04J14/0206 , H04J14/021 , H04J14/0213
摘要： A power spectrum measurement system and a method monitor a power spectrum of N-channels in an M-channel wavelength division multiplexed optical communication network, where N is less than or equal to M. An add-drop node in the network drops a channel and adds a channel for transmitting data on the network. The added channel has the same wavelength as the dropped channel. The power of the added channel is controlled to minimize crosstalk. The power spectrum measurement system includes a detection circuit and a processing circuit. The detection circuit is an inexpensive, scalable circuit for detecting the power of each channel. The processing circuit is connected to the detection circuit and calculates the power of each channel based upon the power detected by the detection circuit. The processing circuit also calculates power of the added channel for minimizing crosstalk. The calculated power of the added channel is a function of the powers measured for the N-channels, including but not limited to the average power of the N-channels or the powers of the channels adjacent the added channel. The calculated power is transmitted to the node adding the channel for controlling the power of the added channel.
摘要翻译： 功率谱测量系统和监视M信道波分复用光通信网络中的N信道的功率谱的方法，其中N小于或等于M.网络中的添加点节点丢弃信道， 添加了一个在网络上传输数据的通道。 添加的通道具有与丢弃通道相同的波长。 控制附加通道的功率以最小化串扰。 功率谱测量系统包括检测电路和处理电路。 检测电路是用于检测每个通道的功率的廉价的可扩展电路。 处理电路连接到检测电路，并根据检测电路检测到的功率来计算每个通道的功率。 处理电路还计算附加信道的功率以最小化串扰。 所添加的信道的计算功率是对N个信道测量的功率的函数，包括但不限于N个信道的平均功率或与相邻信道相邻的信道的功率。 所计算的功率被传送到添加用于控制所添加的信道的功率的信道的节点。
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2.发明授权公开(公告)号：US07956993B2
公开(公告)日：2011-06-07
申请号：US12916820
申请日：2010-11-01
IPC分类号： G01N21/00
CPC分类号： G01M11/336 , G01M11/331 , H04B10/2569
摘要： A method of determining a mean square differential group delay associated with a length of optical fiber. The method including measuring a polarization mode dispersion vector as a function of frequency, using a frequency-domain polarization mode dispersion measurement apparatus. The method also including calculating a second-order polarization mode dispersion vector as a function of frequency by calculating a derivative of the polarization mode dispersion vector with respect to frequency. Also, calculating the mean of the magnitude of the second-order polarization mode dispersion vector to obtain a first result. Further, multiplying a proportionality coefficient by the first result to calculate the mean square differential group delay.
摘要翻译： 一种确定与光纤长度相关的均方根差分群延迟的方法。 该方法包括使用频域偏振模色散测量装置测量作为频率的函数的偏振模色散矢量。 该方法还包括通过计算相对于频率的偏振模色散矢量的导数来计算作为频率的函数的二阶偏振模色散矢量。 此外，计算二阶偏振模色散矢量的幅度的平均值以获得第一结果。 此外，将比例系数乘以第一结果以计算均方差差群延迟。
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公开(公告)号：US07454139B2
公开(公告)日：2008-11-18
申请号：US11480605
申请日：2006-07-03
IPC分类号： H04B10/00
CPC分类号： H04J14/0283 , H04J14/0212 , H04J14/0226 , H04J14/0241 , H04J14/0254 , H04L12/5602 , H04L2012/5632 , H04L2012/5649 , H04L2012/5679 , H04Q11/0005 , H04Q11/0066 , H04Q11/0478 , H04Q2011/002 , H04Q2011/0022 , H04Q2011/0033 , H04Q2011/0035 , H04Q2011/0064 , H04Q2011/0069 , H04Q2011/0092
摘要： A packet-switched WDMA ring network has an architecture utilizing packet stacking and unstacking for enabling nodes to access the entire link capacity by transmitting and receiving packets on available wavelengths. Packets are added and dropped from the ring by optical switches. A flexible credit-based MAC protocol along with an admission algorithm enhance the network throughput capacity.
摘要翻译： 分组交换WDMA环网具有利用分组堆叠和拆包的架构，以使得节点能够通过发送和接收可用波长的分组来访问整个链路容量。 数据包通过光开关从环路中添加和丢弃。 灵活的基于信用的MAC协议以及接纳算法增强了网络吞吐能力。
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4.发明授权Delivering multicast services on a wavelength division multiplexed network using a configurable four-port wavelength selective crossbar switch 失效使用可配置的四端口波长选择性交叉开关在波分复用网络上提供多播服务公开(公告)号：US07366417B2
公开(公告)日：2008-04-29
申请号：US11328782
申请日：2006-01-10
申请人： Mark D. Feuer , Nicholas J. Frigo , Cedric F. Lam
发明人： Mark D. Feuer , Nicholas J. Frigo , Cedric F. Lam
IPC分类号： H04J14/00
CPC分类号： H04Q11/0005 , H04Q11/0062 , H04Q2011/0016 , H04Q2011/0022 , H04Q2011/0026 , H04Q2011/0032 , H04Q2011/0035 , H04Q2011/0047 , H04Q2011/0058
摘要： A method and a system in which selected wavelengths of a wavelength division multiplexed (WDM) signal are modulated with multicast data for multicasting data services on an optical network. The WDM signal is received from a hub node of the optical network, such as a unidirectional ring network or a bi-directional ring network. A four-port wavelength crossbar switch (4WCS) selectably switches selected wavelengths from the optical network to a modulator loop. The modulator loop includes a multicast modulator that modulates the selected plurality of wavelengths with the multicast data. Each modulated wavelength is then switched back to the optical network by the 4WCS switch, and sent to a plurality of subscriber nodes of the optical network. This architecture allows a facility provider to be physically separated from a content provider, and affords the flexibility of selectively delivering multicast content to individual subscribers.
摘要翻译： 一种方法和系统，其中波分复用（WDM）信号的选定波长用组播数据进行调制，用于在光网络上组播数据业务。 从光网络的集线器节点（例如单向环网或双向环网）接收WDM信号。 四端口波长交叉开关（4WCS）可选择地将所选波长从光网络切换到调制器环路。 调制器环路包括用多播数据调制所选择的多个波长的多播调制器。 然后通过4WCS交换机将每个调制波长切换回光网络，并发送到光网络的多个订户节点。 该架构允许设施提供者在物理上与内容提供商分离，并且提供选择性地将多播内容递送给个体用户的灵活性。
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5.发明授权Multiple input waveguide grating router for broadcast and multicast services 失效用于广播和多播服务的多输入波导光栅路由器公开(公告)号：US06697574B2
公开(公告)日：2004-02-24
申请号：US09822821
申请日：2001-04-02
IPC分类号： H04J1400
CPC分类号： H04Q11/0005 , H04J14/02 , H04Q2011/0015 , H04Q2011/0016 , H04Q2011/0032 , H04Q2011/0047 , H04Q2011/0049
摘要： An optical telecommunications network suitable for carrying broadcast and switched services. The network includes a wavelength division multiplexing (WDM) coupled to a waveguide grating router (WGR). In accordance with the invention, an adjacent input port is connected with the same optical content. Thus, its outputs are adjacent (or wrapped around). According, the optical power in each of the broadcast bands at the outputs remains the same but is reduced by a factor of two in power for each channel but occupying twice as many channels. This has the effect of increasing the SNR by a factor of two.
摘要翻译： 适用于承载广播和交换业务的光通信网络。 网络包括耦合到波导光栅路由器（WGR）的波分复用（WDM）。 根据本发明，相邻的输入端口与相同的光学内容连接。 因此，其输出是相邻的（或缠绕的）。 据说，输出中每个广播频带的光功率保持不变，但每个频道的功率减少了2倍，但占用的频道数量是两倍。 这具有将SNR增加一倍的效果。
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6.发明授权公开(公告)号：US08543007B2
公开(公告)日：2013-09-24
申请号：US12958008
申请日：2010-12-01
IPC分类号： H04B10/00
CPC分类号： H04B10/2572
摘要： Described is a method and system for reducing system penalty from polarization mode dispersion. The method includes receiving a plurality of signals at a receiving end of a transmission line, each signal being received on one of a plurality of channels of the transmission line and measuring a signal degradation of at least one of the channels of the transmission line. An amount of adjustment of a polarization controller is determined based on the signal degradation, the amount of adjustment being selected to reduce the polarization mode dispersion. The amount of adjustment is then transmitted to the polarization controller.
摘要翻译： 描述了一种用于减少偏振模色散的系统损失的方法和系统。 该方法包括在传输线的接收端处接收多个信号，每个信号在传输线的多个信道中的一个信道上被接收并且测量传输线的至少一个信道的信号劣化。 基于信号劣化来确定偏振控制器的调整量，选择调整量以减少偏振模色散。 然后将调节量传输到偏振控制器。
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7.发明申请公开(公告)号：US20110051126A1
公开(公告)日：2011-03-03
申请号：US12916820
申请日：2010-11-01
IPC分类号： G01N21/23
CPC分类号： G01M11/336 , G01M11/331 , H04B10/2569
摘要： A method of determining a mean square differential group delay associated with a length of optical fiber. The method including measuring a polarization mode dispersion vector as a function of frequency, using a frequency-domain polarization mode dispersion measurement apparatus. The method also including calculating a second-order polarization mode dispersion vector as a function of frequency by calculating a derivative of the polarization mode dispersion vector with respect to frequency. Also, calculating the mean of the magnitude of the second-order polarization mode dispersion vector to obtain a first result. Further, multiplying a proportionality coefficient by the first result to calculate the mean square differential group delay.
摘要翻译： 一种确定与光纤长度相关的均方根差分群延迟的方法。 该方法包括使用频域偏振模色散测量装置测量作为频率的函数的偏振模色散矢量。 该方法还包括通过计算相对于频率的偏振模色散矢量的导数来计算作为频率的函数的二阶偏振模色散矢量。 此外，计算二阶偏振模色散矢量的幅度的平均值以获得第一结果。 此外，将比例系数乘以第一结果以计算均方差差群延迟。
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8.发明申请Method and apparatus for increasing the security of the physical fiber plant by polarization monitoring 审中-公开通过偏振监测提高物理光纤设备的安全性的方法和装置公开(公告)号：US20080062407A1
公开(公告)日：2008-03-13
申请号：US11513461
申请日：2006-08-31
CPC分类号： H04B10/85
摘要： A method and system for detecting intrusions on a fiber optic network. The method and system monitors polarization variations of light being transmitted in the fiber optic network. It then determines intrusions in the fiber optic network based on the polarization variations. The polarization variations are then compared to a database of known activity which would cause polarization variations to determine unknown intrusions. An intrusion alert is initiated when the determined intrusion does not correspond to any known activity. The known activity is contained in an automated database for automatically comparing to the polarization variations. The intrusions may be cross-correlated on two partially adjacent fiber optic cables to determine the location of the intrusion.
摘要翻译： 一种用于检测光纤网络入侵的方法和系统。 该方法和系统监测在光纤网络中传输的光的偏振变化。 然后，它基于极化变化确定光纤网络中的入侵。 然后将极化变化与已知活动的数据库进行比较，这将导致极化变化来确定未知的入侵。 当确定的入侵不对应于任何已知的活动时，启动入侵警报。 已知的活动包含在自动数据库中，用于自动与偏振变化进行比较。 入侵可以在两个部分相邻的光纤电缆上互相关联，以确定入侵的位置。
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9.发明授权Estimating optical transmission system penalties induced by polarization mode dispersion (PMD) 失效估计由偏振模色散（PMD）引起的光传输系统处罚公开(公告)号：US07256876B1
公开(公告)日：2007-08-14
申请号：US11255028
申请日：2005-10-20
IPC分类号： G01N21/00
CPC分类号： G01M11/336 , G02B6/278 , H04B10/07951 , H04B10/2569
摘要： Polarization mode dispersion (PMD) induced system penalty ε is determined from optical characteristics of an optical wavelength division multiplexed (WDM) signal that is carried on a network. The method involves tapping the optical WDM signal, separating an optical channel from the tapped optical WDM signal, performing a frequency-resolved state of polarization (SOP) measurement on the channel, and computing the PMD-induced system penalty as ε=AL2+BL4, in which A and B are predetermined parameters and L is an SOP string length based on the SOP measurement.
摘要翻译： 由网络上承载的光波分复用（WDM）信号的光学特性确定极化模式色散（PMD）诱导系统损耗ε。 该方法包括点击光学WDM信号，将光信道与抽头光WDM信号分离，在信道上执行频率分辨的偏振态（SOP）测量，并计算PMD诱导的系统损耗为ε= AL
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公开(公告)号：US07092631B2
公开(公告)日：2006-08-15
申请号：US09973699
申请日：2001-10-11
IPC分类号： H04J14/00
CPC分类号： H04J14/0283 , H04J14/0206 , H04J14/0209 , H04J14/021 , H04J14/0212 , H04J14/0213 , H04J14/0227 , H04J14/0241 , H04J14/0245 , H04J14/0249 , H04J14/0286 , H04J14/083 , H04L2012/5632 , H04L2012/5649 , H04L2012/5679 , H04Q11/0005 , H04Q11/0066 , H04Q11/0478 , H04Q2011/002 , H04Q2011/0022 , H04Q2011/0024 , H04Q2011/0033 , H04Q2011/0035 , H04Q2011/0052 , H04Q2011/0064 , H04Q2011/0075 , H04Q2011/0086 , H04Q2011/0092
摘要： A system for providing high connectivity communications over a packet-switched optical ring network comprises a core optical ring having at least one node, the node being coupled to a subtending system by an optical crossbar switch, a source for generating a set of packets, a stacker for forming a first composite packet from the set of serial packets, the stacker coupled to the optical crossbar switch, and the stacker further coupled to the source for generating the set of packets, the first composite packet being parallel packets in a single photonic time slot, the first composite packet to be added to the core optical ring in a vacant photonic time slot via the optical crossbar switch, a second composite packet propagating on the core optical ring destined to be dropped at the node for further distribution on the subtending system via the optical crossbar switch, an unstacker for serializing the second composite packet dropped at the node, the unstacker coupled to the optical crossbar switch and a detector for distributing the serialized packets to a further destination by the subtending system. The source for generating the set of packets may be generated, for example, serially by a tunable laser or may be generated, for example, in parallel by an array of lasers.
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