Device and method for switching optical data for optical communication networks
    2.
    发明授权
    Device and method for switching optical data for optical communication networks 失效
    用于光通信网络切换光数据的设备和方法

    公开(公告)号:US07327955B2

    公开(公告)日:2008-02-05

    申请号:US10500655

    申请日:2002-12-24

    IPC分类号: H04J14/00

    摘要: The field of the invention is that of switching optical signals with carrier wavelength conversion capacity, comprising a set of input ports (PE1-PEn), a set of output ports (PS1-PSn) functionally connected to the input ports so that an input signal presented to one of the input ports may be selectively routed to at least one of the output ports, and wavelength conversion means (34) providing a capacity for converting an input signal carrier wavelength to at least one other output port output wavelength.According to the invention the wavelength conversion capacity of said conversion means (34) is limited by at least one of the following three limitation means i) to iii): i) for at least one of said output ports (PS), no wavelength conversion may be applied for sending a signal from an input port; ii) for at least one of said output ports (PS), wavelength conversion may be applied for sending a signal from an input port (PE), but to only a restricted number of wavelength values from the number L of different wavelength values accepted at the input, this restricted number being greater than 0 and less than L, and iii) for only a restricted number of output ports (PS) less than the total number of output ports of the switching system, wavelength conversion may be applied for sending a signal from an input port (PE) to any wavelength value from the number L of different wavelength values accepted at the input.

    摘要翻译: 本发明的领域是具有载波波长转换能力的光信号的切换,包括一组输入端口(PE 1 -PEn),功能上连接到输入端口的一组输出端口(PS 1 -PS n),使得 提供给一个输入端口的输入信号可被选择性地路由到至少一个输出端口,并且波长转换装置(34)提供用于将输入信号载波波长转换为至少一个其它输出端口输出波长的电容。 根据本发明,所述转换装置(34)的波长转换能力由以下三个限制装置i)至iii)中的至少一个限制:i)对于所述输出端口(PS)中的至少一个,不进行波长转换 可以应用于从输入端口发送信号; ii)对于所述输出端口(PS)中的至少一个,可以应用波长转换来从输入端口(PE)发送信号,但是可应用波长转换仅来自于接收的不同波长值的数量L 输入,该限制数大于0且小于L,以及iii)对于仅限于数量少的输出端口(PS),该输出端口(PS)小于交换系统的输出端口总数,波长转换可用于发送 信号从输入端口(PE)到在输入端接受的不同波长值的数量L的任何波长值。

    Switch for optical signals
    3.
    发明授权
    Switch for optical signals 失效
    切换光信号

    公开(公告)号:US06658175B2

    公开(公告)日:2003-12-02

    申请号:US09922749

    申请日:2001-08-07

    IPC分类号: G02B626

    摘要: The invention relates to a switch (112) for optical signals and which has a number of outputs at least equal to the number of inputs and include means whereby an input signal is routed to at least one of those outputs. Each input receives information modulating optical carriers at different wavelengths. The switch (112) includes means (12611, 12612, . . . , 126NB) for grouping all the carriers received into non-contiguous subsets of carriers (G11, . . . , G1B, . . . , GN1, . . . , GNB) and means (1291, 1292, . . . , 129NB) for selecting blocks of carriers from the same subset of carriers. The information corresponding to each subset of optical carriers is thus routed in blocks to the same subset output. Switching the carriers at the subset level improves the quality of the output signal and limits the number of components for the same total quantity of information switched.

    摘要翻译: 本发明涉及一种用于光学信号的开关(112),其具有至少等于输入数量的多个输出,并且包括输入信号被路由到这些输出中的至少一个的装置。 每个输入接收信号调制不同波长的光载波。 交换机(112)包括用于将接收到的所有载波分组到载波(G11,...,G1B ...,...,...,...)的非连续子集的装置(12611,12612 ...,126NB) GNB)以及用于从同一载波子集中选择载波块的装置(1291,1292,...,129NB)。 与光载波的每个子集相对应的信息因此以块的方式被路由到相同的子集输出。在子集级别处切换载波提高了输出信号的质量,并且限制了相同总信息交换量的分量数。

    Device for reducing time distortion generated in light pulses by a nonlinear optical frequency converter system
    4.
    发明授权
    Device for reducing time distortion generated in light pulses by a nonlinear optical frequency converter system 有权
    用于通过非线性光学变频器系统减少在光脉冲中产生的时间失真的装置

    公开(公告)号:US08508840B2

    公开(公告)日:2013-08-13

    申请号:US13132718

    申请日:2009-12-21

    IPC分类号: G02F1/35

    CPC分类号: H01S3/0057 H01S3/0092

    摘要: A device for reducing time distortion generated in light pulses by an optical frequency converter including at least one nonlinear optical component (4) having a nonlinear optical susceptibility χ of about 2 or 3, the converter being capable of receiving at least one incident pulse light beam (2), the incident light pulses having a duration Δt0, an optical frequency ω0±Δω0 and an intensity I0(t), and of generating, by frequency conversion, at least one output pulse beam (3), the output light pulses having a duration Δt1, an optical frequency Δ1±Δω1 different from ω0±Δω0, and an intensity I1(t). The time distortion-reducing device includes a pre-compensation linear time filter (5) provided on the path of the incident beam (2), and capable of reducing the intensity time distortions generated in the frequency-converted output light pulses to at least one pre-compensation intensity Icomp.

    摘要翻译: 一种用于减少由光学频率转换器产生的时间失真的装置,包括至少一个具有约2或3的非线性光学敏感度chi的非线性光学部件(4),所述转换器能够接收至少一个入射脉冲光束 (2),入射光脉冲具有持续时间Deltat0,光学频率ω0±Δomega0和强度I0(t),并且通过频率转换产生至少一个输出脉冲波束(3),所述输出光脉冲具有 持续时间Deltat1,与omega0±Δomega0不同的光学频率Delta1±Deltaomega1和强度I1(t)。 时间失真减少装置包括设置在入射光束(2)的路径上的预补偿线性时间滤波器(5),并且能够将在频率转换的输出光脉冲中产生的强度时间失真减少到至少一个 预补偿强度Icomp。

    Optical Transmission System Via Polarization-Maintaining Fibres
    5.
    发明申请
    Optical Transmission System Via Polarization-Maintaining Fibres 审中-公开
    通过极化维护光纤的光传输系统

    公开(公告)号:US20080144991A1

    公开(公告)日:2008-06-19

    申请号:US11660228

    申请日:2005-08-10

    申请人: Denis Penninckx

    发明人: Denis Penninckx

    IPC分类号: G02B6/24

    摘要: The invention concerns a polarization-maintaining fiber-optic transmission system. The invention concerns a fiber-optic transmission system comprising at least one polarization maintaining fiber coupling an input device to an output device. The fiber comprises at least a first (F1) and a second (F2) polarization maintaining fiber section having each a slow propagation axis and a fast propagation axis. One end of the first fiber section is coupled to one end of the second fiber section such that the slow propagation axis of the first fiber section coincides with the fast propagation axis of the second fiber section and inversely. The invention is applicable in particular to lasers.

    摘要翻译: 本发明涉及一种偏振保持光纤传输系统。 本发明涉及一种光纤传输系统,其包括将输入设备耦合到输出设备的至少一个保偏光纤。 光纤至少包括具有慢传播轴和快速传播轴的第一(F 1)和第二(F 2)保偏光纤部分。 第一纤维部分的一端连接到第二纤维部分的一端,使得第一纤维部分的慢传播轴线与第二纤维部分的快速传播轴线重合,并且相反。 本发明特别适用于激光。

    Compensation of polarization mode dispersion

    公开(公告)号:US06631221B2

    公开(公告)日:2003-10-07

    申请号:US09897481

    申请日:2001-07-03

    IPC分类号: G02B600

    CPC分类号: H04B10/2569 G01M11/336

    摘要: A method and a device for compensating the polarization mode dispersion (PMD) of a transmitted optical signal comprise means of a polarization controller (3) coupled to a differential group delay (DGD) generator (5). The polarization controller (3) is controlled by a feedback loop, said feedback loop implementing an optimisation algorithm to optimize a feedback parameter of the output signal of the DGD generator (5). The algorithm takes into account the state of polarization (SOP) of an optical signal determined from the output signal of the polarization controller (3)) or from the output signal from the DGD generator (5).

    METHOD FOR SPREADING THE SPECTRUM OF A NARROWBAND SIGNAL
    8.
    发明申请
    METHOD FOR SPREADING THE SPECTRUM OF A NARROWBAND SIGNAL 有权
    用于传播窄带信号频谱的方法

    公开(公告)号:US20110164658A1

    公开(公告)日:2011-07-07

    申请号:US13119462

    申请日:2009-09-23

    IPC分类号: H04B1/69

    CPC分类号: H04B1/69 H04B10/2537

    摘要: A method for spreading a spectrum of a narrowband signal, e.g. a monochromatic optical signal or a radiofrequency carrier. The method uses a phase modulation using a modulation signal that includes a plurality of sinusoidal components, the plurality including a component at a fundamental frequency and at least one component at a frequency that is a harmonic of the fundamental frequency, the sinusoidal components being synchronous and affected with phases respectively equal to consecutive multiples of π/2.

    摘要翻译: 一种用于扩展窄带信号的频谱的方法,例如, 单色光信号或射频载波。 该方法使用包括多个正弦分量的调制信号的相位调制,该多个正弦分量包括基频的分量和基频的谐波频率的至少一个分量,正弦分量是同步的, 受相分别等于&pgr / 2的连续倍数的相位。

    Network element for use in an optical communication network, in particular a DWDM communication network
    9.
    发明授权
    Network element for use in an optical communication network, in particular a DWDM communication network 有权
    用于光通信网络的网络元件,特别是DWDM通信网络

    公开(公告)号:US07277648B2

    公开(公告)日:2007-10-02

    申请号:US10824484

    申请日:2004-04-15

    CPC分类号: H04J14/02 H04L1/0003

    摘要: The present invention relates to an optical communication network and to a network element for use in such a network. The network element comprises a plurality of receivers (70-76) for receiving optical communication signals, a plurality of transmitters (54-62, 82-86) for transmitting optical communication signals, and a plurality of network connections, each network connection having an individual signal impairment characteristic. The pluralities of receivers (70-76) and transmitters (54-62, 82-86) are adapted to employ a plurality of different modulation schemes (64, 66). Furthermore, the pluralities of receivers (70-76) and transmitters (54-62, 82-86) are assigned to the network connections as a function of the individual signal impairment characteristics.

    摘要翻译: 本发明涉及光通信网络和用于这种网络的网元。 网元包括用于接收光通信信号的多个接收机(70-76),用于发送光通信信号的多个发射机(54-62,88-86)和多个网络连接,每个网络连接具有 个体信号障碍特征。 多个接收器(70-76)和发送器(54-62,82-86)适于采用多个不同的调制方案(64,66)。 此外,多个接收器(70-76)和发射器(54-62,82-86)被分配给作为各个信号损伤特性的函数的网络连接。

    Decision system for modulated electrical signals

    公开(公告)号:US07136597B2

    公开(公告)日:2006-11-14

    申请号:US10238063

    申请日:2002-09-10

    IPC分类号: H04B10/06

    CPC分类号: H04B10/695 H04L25/062

    摘要: A decision system for a modulated electrical signal delivered by a converter in response to a received modulated optical signal compares the amplitude of the electrical signal to a reference level, measures an average amplitude of the electrical signal, and generates the reference level as a function of the result of such measurements so that the “reference level/average amplitude” ratio can be adjusted to a predetermined constant value different from 1. Applications include receivers for optical packet transmission systems.