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    Optical WDM transmission system having a distributed arrangement of regenerators
    1.
    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。

    Dispersion compensation in optical fiber transmission lines
    3.
    发明授权
    Dispersion compensation in optical fiber transmission lines 有权
    光纤传输线中的色散补偿

    公开(公告)号：US06792214B1

    公开(公告)日：2004-09-14

    申请号：US09671924

    申请日：2000-09-28

    申请人： René-Jean Essiambre ,  Arthur F. Judy ,  Torben N. Nielsen

    发明人： René-Jean Essiambre ,  Arthur F. Judy ,  Torben N. Nielsen

    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。

    Method and apparatus for alleviating slope-induced impairments to chirped optical signals propagating in an optical transmission system
    5.
    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

    申请人： Per Bang Hansen ,  Torben N. Nielsen ,  Lars Erik Eskildsen

    发明人： Per Bang Hansen ,  Torben N. Nielsen ,  Lars Erik Eskildsen

    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。

    Broadband optical amplification system
    7.
    发明授权
    Broadband optical amplification system 有权
    宽带光放大系统

    公开(公告)号：US06304368B1

    公开(公告)日：2001-10-16

    申请号：US09231279

    申请日：1999-01-15

    申请人： Per Bang Hansen ,  Torben N. Nielsen ,  Andrew John Stentz

    发明人： Per Bang Hansen ,  Torben N. Nielsen ,  Andrew John Stentz

    IPC分类号： H04J1402

    CPC分类号： H04B10/2972 ,  H01S3/06787 ,  H01S3/302 ,  H04B10/2916

    摘要： The present invention is directed to an optical communication system and optical signal amplifier for amplifying said optical signal having at least a first and a second wavelength as it propagates therethrough. The optical signal amplifier includes an input port; an output port; an optical medium, wherein a portion of the optical medium comprises a plurality of optical paths corresponding to the first and second wavelengths of the optical signal; a light radiation generator capable of coupling light radiation of a plurality of light radiation wavelengths related to the first and second wavelengths of the optical signal into each of the optical paths, whereby the first and said second wavelengths are amplified by Raman amplification; and an optical combiner for recombining the first and second wavelengths of the optical signal to generate the amplified optical signal.

    摘要翻译： 本发明涉及一种用于放大所述光信号的光通信系统和光信号放大器，所述光信号在其传播时具有至少第一和第二波长。 光信号放大器包括输入端口; 输出端口 光介质，其中光介质的一部分包括对应于光信号的第一和第二波长的多个光路; 光辐射发生器，其能够将与光信号的第一和第二波长相关的多个光辐射波长的光辐射耦合到每个光路中，由此第一和第二波长通过拉曼放大来放大; 以及光合成器，用于重新组合光信号的第一和第二波长以产生放大的光信号。

    Wavelength locking of variable dispersive elements
    8.
    发明授权
    Wavelength locking of variable dispersive elements 失效
    可变色散元件的波长锁定

    公开(公告)号：US6078418A

    公开(公告)日：2000-06-20

    申请号：US909978

    申请日：1997-08-12

    申请人： Per Bang Hansen ,  Torben N. Nielsen

    发明人： Per Bang Hansen ,  Torben N. Nielsen

    IPC分类号： G02B6/34 ,  H04B10/18 ,  H04J14/02

    CPC分类号： G02B6/2932 ,  G02B6/29317 ,  G02B6/29322 ,  G02B6/29358 ,  G02B6/29383 ,  G02B6/29394 ,  G02B6/29395 ,  G02B6/4246 ,  H04B10/2507

    摘要： A variable dispersion optical unit is used to vary the relative dispersion between an input signal and an output signal of the optical unit under control of a control circuit. The control unit uses an optical homodyne detector to beat the input optical signal with the output optical signal to generate a control signal to adjust the relative dispersion a variable dispersive element. The variable dispersive optical element may be selected from a group of dispersive elements including at least a Bragg grating, a Fabry-Perot filter, a Mach-Zehnder filter, and a waveguide routing element. The variable dispersive optical unit can be used as part of a variable wavelength selective optical circuit (e.g., a tunable wavelength filter) where the varying dispersion characteristics is used to control the selection of the wavelength of the tunable wavelength filter, or is used to select the drop/add wavelength(s) of an Add/Drop circuit.

    摘要翻译： 可变色散光学单元用于在控制电路的控制下改变光学单元的输入信号和输出信号之间的相对色散。 控制单元使用光学零差检测器以输出光信号击打输入光信号，以产生控制信号，以调节可变色散元件的相对色散。 可变色散光学元件可以选自包括至少布拉格光栅，法布里 - 珀罗滤光器，马赫 - 曾德滤光器和波导路由元件的分散元件组。 可变色散光学单元可以用作可变波长选择光学电路（例如，可调波长滤波器）的一部分，其中使用变化的色散特性来控制可调谐波长滤波器的波长的选择，或者用于选择 添加/删除电路的降/添加波长。

    Reduction of four-wave mixing in raman amplified optical transmission systems
    9.
    发明授权
    Reduction of four-wave mixing in raman amplified optical transmission systems 有权
    在拉曼放大光传输系统中减少四波混频

    公开(公告)号：US06445492B1

    公开(公告)日：2002-09-03

    申请号：US09517864

    申请日：2000-03-03

    申请人： Torben N. Nielsen ,  Karsten Rottwitt ,  Andrew John Stentz

    发明人： Torben N. Nielsen ,  Karsten Rottwitt ,  Andrew John Stentz

    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。