Selective frequency switching system and a reconfigurable optical delay circuit incorporating it
    2.
    发明授权
    Selective frequency switching system and a reconfigurable optical delay circuit incorporating it 失效
    选择性频率切换系统和包含其的可重构光延迟电路

    公开(公告)号:US07324751B2

    公开(公告)日:2008-01-29

    申请号:US10262845

    申请日:2002-10-03

    IPC分类号: H04J14/00

    摘要: The invention relates to a reconfigurable optical switching system for selectively coupling one or more frequencies of first and second input wavelength division multiplex signals (WDM1, WDM2) consisting of N channels to first and second output ports (O1, O2). The invention also relates to a variable and reconfigurable optical delay circuit comprising said optical switching system associated with an optical delay loop. The input frequency division multiplex optical spectra (WDM1, WDM2) are therefore divided by a first demultiplexer (Demux) to a plurality of interleaved stages of optical switches (D, C, A and B) which selectively feed a plurality of input ports (Mi) of a multiplexer (Mux), which then uses its routing properties to implement in particular the complex reconfigurable multiple 2×2 frequency switching function.

    摘要翻译: 本发明涉及一种用于将由N个信道组成的第一和第二输入波分多路复用信号(WDM 1,WDM 2)的一个或多个频率选择性地耦合到第一和第二输出端口(O 1,O 2)的可重配置光交换系统。 本发明还涉及一种包括与光学延迟环相关联的所述光学交换系统的可变和可重新配置的光学延迟电路。 因此,输入频分复用光谱(WDM1,WDM2)被第一解复用器(Demux)划分到多个交错级的光开关(D,C,A和B),这些级选择性地馈送多个输入端口 (MUX)的多路复用器(MUX),然后使用其路由特性实现复合可重构多个2×2频率切换功能。

    Device for reducing time distortion generated in light pulses by a nonlinear optical frequency converter system
    3.
    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
    4.
    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
    6.
    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
    7.
    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.

    Optical switching device and a method of controlling the device
    9.
    发明授权
    Optical switching device and a method of controlling the device 有权
    光开关器件及其控制方法

    公开(公告)号:US06836582B2

    公开(公告)日:2004-12-28

    申请号:US10331322

    申请日:2002-12-31

    IPC分类号: G02B626

    摘要: The optical switching device (100) includes: an optical switching matrix (1) including: input ports (A, B), output ports (a, b), switching means (3, 3′) between the input ports (A, B) and the output ports (a, b), and control means (2) for the switching matrix (1),  and optical paths are defined between the input ports (A, B) and the output ports (a, b) so that data entering via one of the input ports (A, B) is switched by the matrix (1) to exit at one of the output ports (a, b). The device is characterized in that the control means (2) include at least one configuration table (14) in which are written authorized optical paths producing a transmission error rate lower than a predetermined value.

    摘要翻译: 光开关装置(100)包括:光开关矩阵(1),包括:输入端口(A,B),输出端口(a,b),输入端口(A,B)之间的开关装置 )和用于开关矩阵(1)的输出端口(a,b)和控制装置(2),并且在输入端口(A,B)和输出端口(a,b)之间定义光路, 通过矩阵(1)中的一个输入端口(A,B)进行切换,以在输出端口(a,b)之一处退出。该装置的特征在于控制装置(2)包括至少一个 配置表(14),其中写入授权光路产生低于预定值的传输错误率。

    Optical data emitter device
    10.
    发明授权
    Optical data emitter device 失效
    光数据发射器

    公开(公告)号:US6002816A

    公开(公告)日:1999-12-14

    申请号:US977494

    申请日:1997-11-24

    CPC分类号: H04B10/25137 G02F1/2257

    摘要: In order to increase the distance over which binary data can be transmitted over an optical fiber, the device compensates for fiber-generated chromatic dispersion by modulating the emitted light wave both in power and in phase, in such a manner as to ensure that there is a phase shift of close to 180.degree. within each binary cell for which the optical power is low but not zero. The device comprises a Mach-Zehnder type interferometer made on a substrate of III-V elements and designed so that in the absence of electrical voltages being applied to its electrodes it establishes destructive interference. A control circuit applies control voltages to the electrodes which voltages have DC components that are substantially equal, with at least one of the control voltages being the result of superposing a bias voltage on a filtered signal obtained by lowpass filtering an input electrical signal. The invention is applicable to long distance transmission over standard optical fibers.

    摘要翻译: 为了增加通过光纤传输二进制数据的距离,该装置通过在功率和相位上调制发射的光波来补偿光纤产生的色散,以确保存在 在光功率低但不为零的每个二进制单元内的相移接近180°。 该装置包括在III-V族元件的衬底上制造的马赫 - 曾德尔型干涉仪,其设计使得在没有施加到其电极上的电压的情况下,其建立破坏性干扰。 控制电路向电极施加控制电压,电压具有基本相等的DC分量,其中至少一个控制电压是通过对输入电信号进行低通滤波获得的滤波信号叠加偏置电压的结果。 本发明适用于通过标准光纤的长距离传输。