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1.发明授权Optical differential phase shift keying transmission system having multiplexing, routing and add/replace capabilities 有权光差分相移键控传输系统具有复用，路由和添加/替换能力公开(公告)号：US06271950B1
公开(公告)日：2001-08-07
申请号：US09136434
申请日：1998-08-18
申请人： Per Bang Hansen , Torben N. Nielsen
发明人： Per Bang Hansen , Torben N. Nielsen
IPC分类号： H04J1408
CPC分类号： H04L27/223 , H04B10/505 , H04B10/50597 , H04B10/572 , H04J3/04 , H04J14/08 , H04L27/2096
摘要： A Differential Phase Shift Keying (DPSK) optical transmission system provides time division multiplexing, channel routing and channel add/replace functions. The DPSK transmitter comprises a laser to generate an optical carrier signal; a delay encoder to provide a different delay for each of a plurality, M, of input signal channels; and a M channel phase modulator which phase modulates the optical carrier signal with each of the differently delayed M input signal channels to form a Time Division Multiplexed (TDM) phase modulated optical signal. A DPSK receiver demodulates a received TDM phase modulated optical signal. The system may also include apparatus to route, add, and replace TDM channels.
摘要翻译： 差分相移键控（DPSK）光传输系统提供时分复用，信道路由和信道添加/替换功能。 DPSK发射机包括产生光载波信号的激光器; 延迟编码器，用于为多个M个输入信号通道中的每一个提供不同的延迟; 以及M通道相位调制器，其用每个不同延迟的M个输入信号通道对光载波信号进行相位调制，以形成时分复用（TDM）相位调制光信号。 DPSK接收机解调接收到的TDM相位调制光信号。 该系统还可以包括用于路由，添加和替换TDM信道的装置。
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2.发明授权公开(公告)号：US06445492B1
公开(公告)日：2002-09-03
申请号：US09517864
申请日：2000-03-03
IPC分类号： H01S300
CPC分类号： H04B10/2916 , H01S3/302 , H04B10/2563
摘要： A Raman amplified transmission includes at least two pump sources to provide amplification to optical signals residing in the C-band (1530-1562 nm) and L-band (1574-1604 nm). The pump signals are chosen so as to provide for a relatively flat and wide composite gain spectrum with a width at least 50% greater than that generated by a monochromatic pump, while also chosen so as to prevent any four-wave mixing products from being in either the C- or L-bands.
摘要翻译： 拉曼放大传输包括至少两个泵浦源，以对驻留在C波段（1530-1562nm）和L波段（1574-1604nm）内的光信号进行放大。 泵信号被选择为提供相对平坦且宽的复合增益谱，其宽度比由单色泵产生的宽度大至少50％，同时还被选择以防止任何四波混频产物处于 无论是C波段还是L波段。
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3.发明授权Method of optical signal transmission with reduced degradation by non-linear effects 有权通过非线性效应降低退化的光信号传输方法公开(公告)号：US06323993B1
公开(公告)日：2001-11-27
申请号：US09253665
申请日：1999-02-19
IPC分类号： H01S310
CPC分类号： H04B10/2935 , H04B10/2543
摘要： In an optical communication system, the signal power level injected into each of one or more optical fiber spans is reduced so as to suppress undesired non-linear effects. This reduction in injected signal level is made possible by remotely pumped amplification in the spans that are affected.
摘要翻译： 在光通信系统中，降低注入到一个或多个光纤跨距中的每一个的信号功率电平，以便抑制不期望的非线性效应。 通过在受影响的跨度中进行远程泵浦放大，可以实现注入信号电平的降低。
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4.发明授权公开(公告)号：US06417958B1
公开(公告)日：2002-07-09
申请号：US09768689
申请日：2001-01-24
IPC分类号： H01S300
CPC分类号： H04B10/2916 , H01S3/06754 , H01S3/094003 , H01S3/302 , H04J14/02
摘要： The use of a co-propagating fiber Raman amplifier in an optical WDM transmission system has been found to be practical in the situation where the fiber amplifier is operated into depletion and the characteristics of the input signals are controlled to exhibit a reduced integrated relative intensity noise (RIN) over the fiber crosstalk bandwidth. In particular, the reduction in the integrated RIN can be achieved by increasing the number of input channels (by adding more messages or simply using dummy channels), encoding the data in a particular fashion to reduce the integrated RIN, or decorrelating the plurality of N input signals below a predetermined, relatively low frequency (for example, 2 MHz).
摘要翻译： 已经发现在光学WDM传输系统中使用共同传播的光纤拉曼放大器在光纤放大器被耗尽的情况下是实用的，并且输入信号的特性被控制以表现出降低的集成相对强度噪声 （RIN）超过光纤串扰带宽。 特别地，集成RIN的减少可以通过增加输入通道的数量（通过添加更多消息或简单地使用虚拟通道）来实现，以特定方式对数据进行编码以减少集成RIN，或者将多个N 输入信号低于预定的相对较低的频率（例如2MHz）。
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5.发明授权公开(公告)号：US06370300B1
公开(公告)日：2002-04-09
申请号：US09252708
申请日：1999-02-18
申请人： Benjamin John Eggleton , Torben N. Nielsen , John A. Rogers , Thomas Andrew Strasser , Kenneth Lee Walker
发明人： Benjamin John Eggleton , Torben N. Nielsen , John A. Rogers , Thomas Andrew Strasser , Kenneth Lee Walker
IPC分类号： G02B634
CPC分类号： H04B10/2519 , H04B2210/252
摘要： In accordance with the invention, an optical communication system is provided with one or more automatic dispersion compensation modules. Each module has an adjustable dispersion element, a data integrity monitor and a feedback network whereby the monitor adjusts the dispersion element to optimize system performance. In a preferred embodiment the dispersion compensating modules comprise chirped fiber Bragg gratings in which the chirp is induced in the grating by passing a current along distributed thin film heaters deposited along the length of the fiber. The magnitude of the applied current determines the dispersion of the grating. A data integrity monitor is configured to sense the integrity of transmitted data and to provide electrical feedback for controlling the current applied to the grating.
摘要翻译： 根据本发明，光通信系统设置有一个或多个自动色散补偿模块。 每个模块都具有可调色散元件，数据完整性监视器和反馈网络，由此监视器调整色散元件以优化系统性能。 在优选实施例中，色散补偿模块包括啁啾光纤布拉格光栅，其中通过沿沿着光纤长度沉积的分布式薄膜加热器传递电流而在光栅中感应啁啾。 施加电流的大小决定了光栅的色散。 数据完整性监视器被配置为感测传输数据的完整性，并提供用于控制施加到光栅的电流的电反馈。
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6.发明授权Optical WDM transmission system having a distributed arrangement of regenerators 有权具有再生器分布式布置的光学WDM传输系统公开(公告)号：US07831153B2
公开(公告)日：2010-11-09
申请号：US10831963
申请日：2004-04-26
申请人： Torben N. Nielsen
发明人： Torben N. Nielsen
IPC分类号： H04B10/00
CPC分类号： H04Q11/0005 , H04B10/299 , H04J14/0212 , H04J14/0217 , H04Q2011/0079
摘要： A network node is provided for use in a WDM optical transmission system that includes a plurality of network nodes interconnected by communication links. The network node includes an optical switch having at least one input port for receiving from the transmission system a WDM signal having a plurality of wavelength components. The network node also includes a regenerator arrangement having sufficient regeneration capacity to regenerate a prescribed fraction of the plurality of wavelength components. The prescribed fraction is less than a maximum number of wavelength components that may be received by the node. A network management element is provided so that the network node can for communicate with a network management center in the transmission system.
摘要翻译： 提供网络节点用于包括通过通信链路互连的多个网络节点的WDM光传输系统。 网络节点包括具有至少一个输入端口的光开关，用于从传输系统接收具有多个波长分量的WDM信号。 网络节点还包括具有足够的再生能力以再生多个波长分量的规定分数的再生器装置。 规定的分数小于可由节点接收的波长分量的最大数目。 提供网络管理元件，使得网络节点能够与传输系统中的网络管理中心进行通信。
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7.发明申请公开(公告)号：US20100098406A1
公开(公告)日：2010-04-22
申请号：US12620512
申请日：2009-11-17
申请人： Thomas Andrew Strasser , Paul Bonenfant , Per Bang Hansen , Torben N. Nielsen , Ken R. Roberts , Jefferson L. Wagener
发明人： Thomas Andrew Strasser , Paul Bonenfant , Per Bang Hansen , Torben N. Nielsen , Ken R. Roberts , Jefferson L. Wagener
IPC分类号： H04J14/00
CPC分类号： H04J14/0283 , G02B6/29367 , G02B6/2938 , G02B6/29383 , G02B6/29391 , G02B6/29395 , G02B6/3512 , G02B6/3548 , G02B6/356 , G02B6/357 , G02B6/3578 , G02B6/3582 , H04J14/0204 , H04J14/0205 , H04J14/0206 , H04J14/021 , H04J14/0212 , H04J14/0217 , H04J14/022 , H04J14/0286 , H04L12/42 , H04L2012/421 , H04Q11/0005 , H04Q2011/0016 , H04Q2011/0024 , H04Q2011/003 , H04Q2011/0052 , H04Q2011/0079 , H04Q2011/0092
摘要： In a WDM optical communication system that includes a plurality of nodes interconnected by communication links, a node is provided that includes a first plurality of transponders each generating and/or receiving an information-bearing optical signal at a different channel wavelength from one another. An optical coupling arrangement, which may include one or more reconfigurable optical switches, transfers the channel wavelengths between a link connected to the node and the first plurality of transponders. The arrangement is adaptable to reconfigure its operational state to selectively direct different ones of the channel wavelengths from the link to different ones of the transponders without disturbing the optical path through the node traversed by any other channel wavelengths. A communications and configuration arrangement is provided, which transfers data identifying the respective channel wavelengths at which the transponders operate from the transponders to the optical coupling arrangement. In response to the transferred data, the communications and configuration arrangement reconfigures the operational state of the optical coupling arrangement.
摘要翻译： 在包括通过通信链路互连的多个节点的WDM光通信系统中，提供了包括第一多个转发器的节点，每个转发器生成和/或接收不同信道波长的信息承载光信号。 可以包括一个或多个可重构光开关的光耦合装置在连接到节点的链路与第一多个转发器之间传送信道波长。 该装置适于重新配置其操作状态，以选择性地将不同的信道波长从链路传送到不同的应答器，而不会干扰通过任何其它信道波长穿过的节点的光路径。 提供了一种通信和配置装置，其将识别应答器操作的相应信道波长的数据从转发器传送到光耦合装置。 响应于传送的数据，通信和配置布置重新配置光耦合装置的操作状态。
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公开(公告)号：US06792214B1
公开(公告)日：2004-09-14
申请号：US09671924
申请日：2000-09-28
IPC分类号： H04B1012
CPC分类号： H04B10/25133
摘要： An optical transmission system designed for gigabit pulse rates and Raman pumping in which there is essentially no pre-dispersion compensation and the in-line dispersion compensation at the start of each span is overcompensation of between 110 and 120 of the compensation needed to neutralize the dispersion of its immediately preceding span.
摘要翻译： 设计用于千兆脉冲速率和拉曼泵浦的光传输系统，其中基本上没有预分散补偿，并且在每个跨度开始时的在线色散补偿是中和分散所需的补偿的110和120之间的过补偿 的前一个跨度。
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9.发明授权Optical fiber cross connect with active routing for wavelength multiplexing and demultiplexing 失效光纤交叉连接有源路由，用于波长复用和解复用
公开(公告)号：US5721796A
公开(公告)日：1998-02-24
申请号：US668196
申请日：1996-06-21
申请人： Miriam R. de Barros , Lars Erik Eskildsen , Gerald Nykolak , Ashish Madhukar Vengsarkar , Torben N. Nielsen , Tawee Tanbun-Ek
发明人： Miriam R. de Barros , Lars Erik Eskildsen , Gerald Nykolak , Ashish Madhukar Vengsarkar , Torben N. Nielsen , Tawee Tanbun-Ek
CPC分类号： H04Q11/0005 , H04J14/0212 , H04J14/0213 , H04Q2011/0009 , H04Q2011/0015 , H04Q2011/0022 , H04Q2011/0026 , H04Q2011/0039
摘要： In accordance with the invention a multiwavelength optical fiber cross connect is provided with an active all-fiber optical router for multiplexing/demultiplexing. The router is comprised of one electronic component--a phase controller--and four fiber components: 1) a fiber directional coupler, 2) a fiber reflective grating filter, 3) a fiber tap, and 4) a fiber phase modulator. The application describes how to make optical routers from these components ranging in complexity from a single wavelength drop router to an N-port, N-wavelength router for add/drop multiplexing. The application also describes how optical wavelength routers can be combined to create optical fiber Cross connect (OXCs), ranging in complexity from 2.times.2 single wavelength OXCs to NXN, M-wavelength OXCs.
摘要翻译： 根据本发明，多波长光纤交叉连接器设置有用于复用/解复用的有源全光纤光路由器。 路由器由一个电子部件（一个相位控制器）和四个光纤部件组成：1）光纤定向耦合器，2）光纤反射光栅滤光器，3）光纤抽头，以及4）光纤相位调制器。 该应用程序描述了如何使这些组件的光路由器的复杂性从单个波长丢弃路由器到N端口，N波长路由器进行分插复用。 该应用还描述了光波长路由器如何组合以创建光纤交叉连接（OXC），其范围从2x2单波长OXC到NXN，M波长OXC。
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10.发明授权Method and apparatus for alleviating slope-induced impairments to chirped optical signals propagating in an optical transmission system 有权用于减轻在光传输系统中传播的啁啾光信号的斜率引起的损伤的方法和装置公开(公告)号：US07747171B1
公开(公告)日：2010-06-29
申请号：US10238985
申请日：2002-09-10
IPC分类号： H04B10/00
CPC分类号： H04B10/2507
摘要： A method and apparatus is provided for reducing impairment to an adiabatically chirped optical signal propagating in an optical communication system. The method begins by receiving an adiabatically chirped optical signal that has traversed one or more network components in the optical communication system. The optical signal has a parameter characteristic of signal quality (e.g., an extinction ratio) that is reduced at least in part by a fidelity-degrading transmission slope accumulated in the one or more network components. A fidelity-enhancing transmission slope imparted to at least one wavelength of the adiabatically chirped optical signal at one or more select points along a transmission path of the communication system so that the optical signal experiences an increase in said parameter characteristic of signal quality.
摘要翻译： 提供了一种用于减少在光通信系统中传播的绝热啁啾光信号的损害的方法和装置。 该方法开始于接收已经穿过光通信系统中的一个或多个网络组件的绝热啁啾光信号。 光信号具有至少部分地通过在一个或多个网络组件中累积的保真度降低的传输斜率而减小的信号质量（例如，消光比）的参数特性。 在通信系统的传输路径的一个或多个选择点，赋予至少一个波长的绝热啁啾光信号的保真度增强传输斜率，使得光信号经历信号质量的所述参数特性的增加。
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