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    Method and apparatus for reducing nonlinear penalties by proper arrangement of the dispersion map in an optical communication system
    2.
    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。

    Reduction of collision induced timing jitter by periodic dispersion management in soliton WDM transmission
    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

    申请人： Ekaterina A. Golovchenko ,  Alexei N. Pilipetskii ,  Curtis R. Menvuk

    发明人： Ekaterina A. Golovchenko ,  Alexei N. Pilipetskii ,  Curtis R. Menvuk

    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。

    Reduction of collision induced timing jitter by periodic dispersion management in soliton WDM transmission
    4.
    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

    申请人： Ekaterina A. Golovchenko ,  Alexei N. Pilipetskii ,  Curtis R. Menyuk

    发明人： Ekaterina A. Golovchenko ,  Alexei N. Pilipetskii ,  Curtis R. Menyuk

    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。

    Method and apparatus for supressing crosstalk between data and monitoring channel in an optical communication system
    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

    申请人： Chien-Jen Chen ,  Alexei N. Pilipetskii ,  Ekaterina A. Golovchenko

    发明人： Chien-Jen Chen ,  Alexei N. Pilipetskii ,  Ekaterina A. Golovchenko

    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。

    Efficient method for assessing the system performance of an optical transmission system while accounting for penalties arising from nonlinear interactions
    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

    申请人： Ekaterina A. Golovchenko ,  Alexei N. Pilipetskii

    发明人： Ekaterina A. Golovchenko ,  Alexei N. Pilipetskii

    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。

    Detection of Data in Signals with Data Pattern Dependent Signal Distortion
    9.
    发明申请
    Detection of Data in Signals with Data Pattern Dependent Signal Distortion 有权
    用数据模式相关信号失真检测信号中的数据

    公开(公告)号：US20100232809A1

    公开(公告)日：2010-09-16

    申请号：US12718132

    申请日：2010-03-05

    申请人： Yi Cai ,  Morten Nissov ,  Alexei N. Pilipetskii

    发明人： Yi Cai ,  Morten Nissov ,  Alexei N. Pilipetskii

    IPC分类号： H04B10/06 ,  H04L27/00

    CPC分类号： H04J14/02 ,  H04B10/2507 ,  H04B10/697 ,  H04J14/0279

    摘要： A detection system and method may be used to detect data transmitted in a signal with data pattern dependent signal distortion. In general, a detection system and method compares samples of a received signal with stored samples of distorted signals associated with known data patterns and selects the known data patterns that correspond most closely with the samples of the received signal. The detection system and method may thus mitigate the effects of data pattern dependent signal distortion.

    摘要翻译： 可以使用检测系统和方法来检测在具有数据模式相关信号失真的信号中发送的数据。 通常，检测系统和方法将接收信号的样本与已知数据模式相关联的失真信号的存储样本进行比较，并且选择与接收信号的采样最紧密对应的已知数据模式。 因此，检测系统和方法可以减轻数据模式相关信号失真的影响。