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1.发明授权Method and apparatus for reducing nonlinear penalties by proper arrangement of the dispersion map in an optical communication system 有权用于通过在光通信系统中适当布置色散图来减少非线性处罚的方法和装置公开(公告)号：US06311002B1
公开(公告)日：2001-10-30
申请号：US09204044
申请日：1998-12-01
申请人： Steven G. Evangelides , Ekaterina A. Golovchenko , Vincent J. Mazurczyk , Alexei N. Pilipetskii
发明人： Steven G. Evangelides , Ekaterina A. Golovchenko , Vincent J. Mazurczyk , Alexei N. Pilipetskii
IPC分类号： G02B602
CPC分类号： G02B6/29377 , G02B6/29394 , H04B10/25253
摘要： A method and apparatus is provided for compensating for dispersion in a wavelength division multiplexed (WDM) optical communication system. The system includes a transmitting and receiving terminal for transmitting and receiving, respectively, an optical signal having a plurality of channels, and an optical fiber transmission path coupling the first and second terminals. The fiber transmission path has a dispersion substantially equal to zero for a selected channel, positive dispersion for a first set of channels, and negative dispersion for a second set of channels. The method begins by providing positive dispersion compensation to the second set of channels at one of the terminals. Negative dispersion compensation is provided to the first set of channels, also at one of the terminals.
摘要翻译： 提供了一种用于补偿波分复用（WDM）光通信系统中的色散的方法和装置。 该系统包括用于分别发送和接收具有多个信道的光信号的发送和接收终端以及耦合第一和第二终端的光纤传输路径。 光纤传输路径对于所选择的信道具有基本上等于零的色散，对于第一组信道具有正色散，对于第二组信道具有负色散。 该方法开始于在一个终端处向第二组信道提供正色散补偿。 在第一组通道中，也在其中一个端子处提供负色散补偿。
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2.发明授权Reduction of collision induced timing jitter by periodic dispersion management in soliton WDM transmission 失效通过在孤子WDM传输中的周期性色散管理减少碰撞引起的定时抖动公开(公告)号：US06243181B1
公开(公告)日：2001-06-05
申请号：US08799365
申请日：1997-02-14
IPC分类号： H04B1000
CPC分类号： H04B10/25077
摘要： Collisions between solitons in different frequency channels are one of the major sources of errors in transmission systems that utilize wavelength division multiplexing (WDM). Moreover, because standard transmission lines have lumped amplification, the four-wave mixing fields from soliton collisions grow uncontrollably, adding amplitude and timing jitter to the jitter due to ideal soliton collisions. These problems are addressed by using a specific dispersion map to implement dispersion management, by which it is possible to significantly reduce the collision-induced timing jitter and to improve system performance even in comparison with that provided by an ideal, exponentially decreasing dispersion fiber.
摘要翻译： 不同频率信道的孤子之间的冲突是使用波分复用（WDM）的传输系统中的主要错误来源之一。 此外，由于标准传输线路具有集总放大，孤岛碰撞的四波混频场不可控地增长，由于理想的孤子碰撞，增加了振幅和定时抖动对抖动的影响。 通过使用特定色散图来实现色散管理来解决这些问题，通过该色散管理可以显着减少碰撞引起的定时抖动并且即使与理想的指数递减的色散光纤相比提供的系统性能也可以提高系统性能。
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3.发明授权Reduction of collision induced timing jitter by periodic dispersion management in soliton WDM transmission 失效通过在孤子WDM传输中的周期性色散管理减少碰撞引起的定时抖动公开(公告)号：US06407841B1
公开(公告)日：2002-06-18
申请号：US09571009
申请日：2000-05-15
IPC分类号： H04B1000
CPC分类号： H04B10/25077
摘要： Collisions between solitons in different frequency channels are one of the major sources of errors in transmission systems that utilize wavelength division multiplexing (WDM). Moreover, because standard transmission lines have lumped amplification, the four-wave mixing fields from soliton collisions grow uncontrollably, adding amplitude and timing jitter to the jitter due to ideal soliton collisions. These problems are addressed by using a specific dispersion map to implement dispersion management, by which it is possible to significantly reduce the collision-induced timing jitter and to improve system performance even in comparison with that provided by an ideal, exponentially decreasing dispersion fiber.
摘要翻译： 不同频率信道的孤子之间的冲突是使用波分复用（WDM）的传输系统中的主要错误来源之一。 此外，由于标准传输线路具有集总放大，孤岛碰撞的四波混频场不可控地增长，由于理想的孤子碰撞，增加了振幅和定时抖动对抖动的影响。 通过使用特定色散图来实现色散管理来解决这些问题，通过该色散管理可以显着减少碰撞引起的定时抖动并且即使与理想的指数递减的色散光纤相比提供的性能也能提高系统性能。
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4.发明授权Dispersion management in optical networks using a differential phase shift keying modulation format 失效使用差分相移键控调制格式的光网络中的色散管理公开(公告)号：US07734187B2
公开(公告)日：2010-06-08
申请号：US11201762
申请日：2005-08-11
IPC分类号： H04B10/18
CPC分类号： H04B10/25253 , H04B10/2525
摘要： Dispersion may be managed in an optical network configured to transmit differential phase shift keying (DPSK) modulated signals by allowing accumulation of dispersion to thousands of ps/nm before compensating. A dispersion map providing a negative average dispersion and a minimum dispersion wavelength outside of the signal band may be employed.
摘要翻译： 色散可以在被配置为通过允许在补偿之前将色散累积到数千ps / nm来发送差分相移键控（DPSK）调制信号的光网络中进行管理。 可以采用提供负平均色散和信号频带之外的最小色散波长的色散图。
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5.发明授权Method and apparatus for supressing crosstalk between data and monitoring channel in an optical communication system 有权用于抑制光通信系统中的数据和监视信道之间的串扰的方法和装置公开(公告)号：US06327250B1
公开(公告)日：2001-12-04
申请号：US09217320
申请日：1998-12-21
IPC分类号： H04B1008
CPC分类号： H04B10/0775 , H04B2210/075
摘要： A method and apparatus is provided for monitoring an optical transmission path through an optical transmission system supporting bidirectional communication between first and second terminals along first and second optical transmission paths. The first transmission path includes at least one optical amplifier located therein. In accordance with the method, a test signal is generated, which is formed by a superposition of first and second optical tones located at first and second wavelengths, respectively. The first and second wavelengths are within the bandwidth of the optical amplifier. The amplitude and phase of the first and second optical tones are arranged so that the test signal has a substantially constant intensity over a modulation cycle of the first and second optical tones. The test signal is transmitted from the first terminal along the first optical transmission path and through the optical amplifier. A portion of the test signal is received at the first terminal after it traverses the optical amplifier, an optical loop-back path, and a second transmission path. The received portion of the test signal may be compared to a delayed rendition of the generated test signal to assess transmission path performance.
摘要翻译： 提供一种方法和装置，用于通过支持沿着第一和第二光传输路径的第一和第二端子之间的双向通信的光传输系统来监测光传输路径。 第一传输路径包括位于其中的至少一个光放大器。 根据该方法，产生测试信号，该测试信号通过分别位于第一和第二波长处的第一和第二光学音调的叠加而形成。 第一和第二波长在光放大器的带宽内。 布置第一和第二光学色调的幅度和相位，使得测试信号在第一和第二光学色调的调制周期上具有基本上恒定的强度。 测试信号从第一端子沿着第一光传输路径和光放大器传输。 测试信号的一部分在其穿过光放大器，光环回路径和第二传输路径之后在第一终端处被接收。 测试信号的接收部分可以与生成的测试信号的延迟再现进行比较，以评估传输路径性能。
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6.发明授权Efficient method for assessing the system performance of an optical transmission system while accounting for penalties arising from nonlinear interactions 有权用于评估光传输系统的系统性能的高效方法，同时考虑到由非线性相互作用引起的惩罚公开(公告)号：US06259543B1
公开(公告)日：2001-07-10
申请号：US09251501
申请日：1999-02-17
IPC分类号： H04B1000
CPC分类号： H04B10/0795
摘要： A method is provided for determining the system performance of an optical transmission system that supports an optical signal having a plurality of channels. The method begins by selecting a set of parameters defining characteristics of the transmission system. Exemplary parameters include, for example, the system's length, bit rate, the number of amplifiers and channels employed, and the wavelengths of the channels and their respective power levels. The method continues by determining a baseline value of the system performance that accounts for fiber loss, optical amplifier gain and noise, and system gain equalization. Next, a first penalty to the baseline system performance is determined. The first penalty arises from a nonlinear interaction between the optical signal and amplified spontaneous emission. A second penalty to the baseline system performance is then determined. The second penalty arises from self-phase modulation and cross-phase modulation. Finally, the first and second penalties are subtracted from the baseline system performance to obtain a value of system performance for the transmission system.
摘要翻译： 提供了一种用于确定支持具有多个信道的光信号的光传输系统的系统性能的方法。 该方法开始于选择一组定义传输系统特性的参数。 示例性参数包括例如系统的长度，比特率，所使用的放大器和信道的数量以及信道的波长及其相应的功率电平。 该方法通过确定考虑光纤损耗，光放大器增益和噪声以及系统增益均衡的系统性能的基线值来继续。 接下来，确定基准系统性能的第一个惩罚。 第一个惩罚是由光信号与放大自发发射之间的非线性相互作用引起的。 然后确定基准系统性能的第二个惩罚。 第二个惩罚是由自相位调制和交叉相位调制引起的。 最后，从基准系统性能中减去第一和第二惩罚，以获得传输系统的系统性能值。
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公开(公告)号：US20120294619A1
公开(公告)日：2012-11-22
申请号：US13111547
申请日：2011-05-19
CPC分类号： H04B10/2916
摘要： An undersea repeaterless optical transmission system is disclosed including first and second stations connected by a communication link which may comprise one or more optical fibers. The system further includes a dedicated Raman pumping path originating from a third intermediate station and interacting with the communication link at an undersea body positioned between the first and second stations. This dedicated Raman pumping path may comprise one or more optical fibers. Communications signals are propagated only between the first and second stations, while the third intermediate station provides only Raman pumping via the pumping path which is used to boost signal power in the communication link between the first and second stations. By limiting this pumping path to Raman pumping only substantially more pumping power can be provided through the path since power is not limited by the equation of a communications signal. The disclosed system architecture facilitates increased capacity (or reach) on the repeaterless link between the first and second stations.
摘要翻译： 公开了一种海底无中继光传输系统，其包括由可包括一个或多个光纤的通信链路连接的第一和第二站。 该系统还包括一个来自第三个中间站的专用拉曼泵送路径，并与位于第一和第二站之间的海底体处的通信链路相互作用。 该专用拉曼泵浦路径可以包括一个或多个光纤。 通信信号仅在第一和第二站之间传播，而第三中间站仅提供经由泵送路径的拉曼泵送，该泵送路径用于升高第一和第二站之间的通信链路中的信号功率。 通过将该泵送路径限制到拉曼泵浦，仅通过路径可以提供实质上更多的泵送功率，因为功率不受通信信号的等式限制。 所公开的系统架构便于在第一和第二站之间的无中继链路上增加容量（或到达）。
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公开(公告)号：US20120257899A1
公开(公告)日：2012-10-11
申请号：US13081231
申请日：2011-04-06
CPC分类号： H04B10/5053 , H04B10/506 , H04B10/532 , H04J14/02 , H04J14/06
摘要： Briefly, in accordance with one or more embodiments, a band of signal carriers is divided into a first band of carriers and a second band of carriers. The carriers in the first band comprise shorter wavelength carriers, and carriers in the second band comprise longer wavelength carriers. Each of the optical sources in the first and second bands of carriers are modulated with an input signal and coupled together via a polarization maintaining coupler. These signals are then combined via a polarization beam combiner wherein the first band has a polarization state that is orthogonal, or nearly orthogonal, to a polarization of the second state.
摘要翻译： 简而言之，根据一个或多个实施例，信号载波的频带被划分成第一载波频带和第二载波频带。 第一频带中的载波包括较短的波长载波，并且第二频带中的载波包括更长的波长载波。 载波的第一和第二频带中的每个光源用输入信号调制并通过偏振保持耦合器耦合在一起。 这些信号然后经由偏振光束组合器组合，其中第一带具有与第二状态的极化正交或接近正交的偏振状态。
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公开(公告)号：US20110274119A1
公开(公告)日：2011-11-10
申请号：US12775878
申请日：2010-05-07
IPC分类号： H04J3/22
CPC分类号： H04L25/14
摘要： An inverse multiplexing communication path is established in at least one direction between nodes connected by a plurality of lower bandwidth bearing channels between the nodes, on which the content of a higher bandwidth signal is distributed and from which the original high bandwidth signal is recovered at the receiving node. During preliminary configuration, for example when selecting a subset of bearer channels from among a number of potential bearer channels, the bearer channels are chosen or are altered by signal processing to make the members of the subset perform similarly, thereby improving operations as compared to having the bearer channels bound to perform according to the performance of the least-performing member of the subset.
摘要翻译： 在由节点之间的多个较低带宽承载信道连接的节点之间的至少一个方向上建立反向多路复用通信路径，在该方向上分配较高带宽信号的内容，并且在其上恢复原始高带宽信号 接收节点。 在初步配置期间，例如当从多个潜在承载信道中选择承载信道的子集时，通过信号处理来选择或改变承载信道，以使子集的成员执行类似的操作，从而与具有 绑定到根据子集的性能最差的成员执行的承载信道。
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10.发明申请公开(公告)号：US20100008666A1
公开(公告)日：2010-01-14
申请号：US12169787
申请日：2008-07-09
IPC分类号： H04J14/02
CPC分类号： H04J14/02 , H04B2210/077 , H04J14/0221
摘要： An optical communication system supporting detection and communication networks. A communication network transmission path and the detection network transmission path are provided as separate paths established by separate fibers or fiber pairs of the same optical fiber cable. All of the elements coupled to the communication network transmission path and the detection network transmission path may be powered by the same power feed equipment through the same optical fiber cable power conductor.
摘要翻译： 支持检测和通信网络的光通信系统。 提供通信网络传输路径和检测网络传输路径作为由相同光纤线缆的分离光纤或光纤对建立的分离路径。 耦合到通信网络传输路径和检测网络传输路径的所有元件可以由相同的馈电设备通过相同的光纤电缆电力导体供电。
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