Highly accurate calibration of polarimeters
    2.
    发明授权
    Highly accurate calibration of polarimeters 有权
    高精度校准极化仪

    公开(公告)号:US06917427B2

    公开(公告)日:2005-07-12

    申请号:US10406693

    申请日:2003-04-02

    CPC classification number: G01M11/337 G01J4/04 G01M11/336

    Abstract: Highly accurate calibration of a polarimeter of the type having at least four detectors involves using four known states of polarisation of an input light signal (calibration polarisations) and at least one further state of polarisation. All input states of polarisation to the polarimeter have unity normalised power of the light signal and unity degree of polarisation. A Stokes matrix for the four calibration polarisations is generated with at least one variable correction parameter, and a correction matrix is determined from the Stokes matrix and a corresponding detector current matrix measured by the polarimeter. An optimisation criterion that is a function of the degrees of polarisation for the states of polarisation as measured by the polarimeter is generated. The correction parameter is varied iteratively to minimise the optimisation criterion so that the polarimeter is calibrated to produce unity power and degree of polarisation for any input state of polarisation.

    Abstract translation: 具有至少四个检测器的类型的偏振计的高精度校准涉及使用四个已知的输入光信号的偏振状态(校准极化)和至少一个另外的极化状态。 偏振光的所有输入状态都具有光信号的统一归一化功率和单位极化度。 使用至少一个可变校正参数生成用于四个校准极化的斯托克斯矩阵,并且从斯托克斯矩阵和由偏振计测量的对应的检测器电流矩阵确定校正矩阵。 产生通过偏振计测量的偏振状态的极化度的函数的优化标准。 校正参数被迭代地改变以最小化优化标准,使得校准偏振器以产生用于任何输入偏振状态的单位功率和极化度。

    Fiber polarimeter, the use thereof, as well as polarimetric method
    4.
    发明申请
    Fiber polarimeter, the use thereof, as well as polarimetric method 有权
    光纤偏振计,其使用方法以及极化法

    公开(公告)号:US20050083525A1

    公开(公告)日:2005-04-21

    申请号:US10969968

    申请日:2004-10-22

    Abstract: A fiber polarimeter has one or more oblique fiber Bragg gratings disposed one behind the other in a fiber. The fiber Bragg gratings couple out portions of a light wave input to the fiber depending on its polarization. For more than one fiber Bragg grating a wave plate is disposed in the fiber between consecutive fiber Bragg gratings. The portions of the light wave from the fiber Bragg grating(s) are detected to produce measurement data that is used to calculate four Stokes parameters for determining polarization, degree of polarization and/or power of the light wave.

    Abstract translation: 光纤偏振计具有在光纤中一个在另一个之后设置的一个或多个倾斜光纤布拉格光栅。 纤维布拉格光栅根据其极化将耦合到输入到光纤的光波的部分。 对于多于一个的光纤布拉格光栅,在连续的光纤布拉格光栅之间的光纤中设置波片。 检测来自光纤布拉格光栅的光波的部分,以产生用于计算用于确定光波的偏振度,偏振度和/或光功率的四个斯托克斯参数的测量数据。

    System and method for monitoring the performance of dense wavelength division multiplexing optical communications systems
    5.
    发明授权
    System and method for monitoring the performance of dense wavelength division multiplexing optical communications systems 失效
    用于监测密集波分复用光通信系统性能的系统和方法

    公开(公告)号:US07041959B1

    公开(公告)日:2006-05-09

    申请号:US09806704

    申请日:1999-10-04

    Abstract: A system and method for monitoring all the characteristic parameters of a DWDM communication system is implemented with two variants. Firstly, this is achieved by means of a specific grating spectrometer displaying a high resolution and a high-speed sampling of the measured values, and secondly by the application of an opto-electronic cross correlator as a purely electronic solution. The grating spectrometer is expediently a particular system in a mixed array according to Ebert and Fastie, wherein the light to be measured passes four times through the grating in a specific manner. The opto-electronic cross correlator can mix the working light with a reference light tunable in terms of its frequency to form an electrical low-frequency signal that is analyzed in a high-impedance operation.

    Abstract translation: 用于监视DWDM通信系统的所有特征参数的系统和方法通过两种变型来实现。 首先,这是通过特定光栅光谱仪来实现的,该光栅光谱仪显示出高分辨率和高速采样的测量值,其次通过应用光电互相关器作为纯电子解决方案。 光栅光谱仪适用于根据Ebert和Fastie的混合阵列中的特定系统,其中要测量的光以特定方式通过光栅四次。 光电互相关器可以将工作光与其频率可调参考光混合,以形成在高阻抗操作中分析的电低频信号。

    Array and method for monitoring the performance of DWDM multiwavelength systems
    6.
    发明申请
    Array and method for monitoring the performance of DWDM multiwavelength systems 审中-公开
    用于监测DWDM多波长系统性能的阵列和方法

    公开(公告)号:US20060027737A1

    公开(公告)日:2006-02-09

    申请号:US11242819

    申请日:2005-10-03

    Abstract: A system and method for monitoring all the characteristic parameters of a DWDM communication system is implemented with two variants. Firstly, this is achieved by means of a specific grating spectrometer displaying a high 5 resolution and a high-speed sampling of the measured values, and secondly by the application of an opto-electronic cross correlator as a purely electronic solution. The grating spectrometer is expediently a particular system in a mixed array according to Ebert and Fastie, wherein the light to be measured passes four times through the grating in a specific manner. The opto-10 electronic cross correlator can mix the working light with a reference light tunable in terms of its frequency to form an electrical low-frequency signal that is analyzed in a high-impedance operation.

    Abstract translation: 用于监视DWDM通信系统的所有特征参数的系统和方法通过两种变型来实现。 首先,这是通过显示高分辨率和高速采样测量值的特定光栅光谱仪实现的,其次通过应用光电互相关器作为纯电子解决方案。 光栅光谱仪适用于根据Ebert和Fastie的混合阵列中的特定系统,其中要测量的光以特定方式通过光栅四次。 opto-10电子互相关器可以将工作光与其频率可调谐的参考光混合,以形成在高阻抗操作中分析的电气低频信号。

    Device for detecting the PMD of optoelectronic transmission lines
    7.
    发明授权
    Device for detecting the PMD of optoelectronic transmission lines 失效
    光电传输线PMD检测装置

    公开(公告)号:US06885783B2

    公开(公告)日:2005-04-26

    申请号:US10204812

    申请日:2001-03-05

    CPC classification number: H04B10/2569 G01M11/336

    Abstract: The invention relates to a device for detecting the PMD of optoelectronic transmission lines. The inventive device is characterized in that it comprises a narrow-band, tunable laser, whose illumination is superimposed with the illumination of the transmission line to be analyzed and an optoelectronic heterodyne receiver which receives the superimposed signal.

    Abstract translation: 本发明涉及一种用于检测光电传输线路的PMD的装置。 本发明的装置的特征在于它包括窄带可调激光器,其照明与待分析的传输线的照明叠加,以及接收叠加信号的光电外差接收器。

    Fiber polarimeter, the use thereof, as well as polarimetric method
    8.
    发明授权
    Fiber polarimeter, the use thereof, as well as polarimetric method 有权
    光纤偏振计,其使用方法以及极化法

    公开(公告)号:US06816260B2

    公开(公告)日:2004-11-09

    申请号:US10147143

    申请日:2002-05-15

    Abstract: A fiber polarimeter has one or more oblique fiber Bragg gratings disposed one behind the other in a fiber. The fiber Bragg gratings couple out portions of a light wave input to the fiber depending on its polarization. For more than one fiber Bragg grating a wave plate is disposed in the fiber between consecutive fiber Bragg gratings. The portions of the light wave from the fiber Bragg grating(s) are detected to produce measurement data that is used to calculate four Stokes parameters for determining polarization, degree of polarization and/or power of the light wave.

    Abstract translation: 光纤偏振计具有在光纤中一个在另一个之后设置的一个或多个倾斜光纤布拉格光栅。 纤维布拉格光栅根据其极化将耦合到输入到光纤的光波的部分。 对于多于一个的光纤布拉格光栅,在连续的光纤布拉格光栅之间的光纤中设置波片。 检测来自光纤布拉格光栅的光波的部分,以产生用于计算用于确定光波的偏振度,偏振度和/或光功率的四个斯托克斯参数的测量数据。

    Arrangement and method for producing a predeterminable polarization mode dispersion
    9.
    发明授权
    Arrangement and method for producing a predeterminable polarization mode dispersion 失效
    用于产生可预定的偏振模色散的布置和方法

    公开(公告)号:US06735352B2

    公开(公告)日:2004-05-11

    申请号:US10228675

    申请日:2002-08-26

    CPC classification number: H04B10/2569

    Abstract: An arrangement and method for producing a predeterminable polarization mode dispersion by means of double refracting elements provides for the production of a second-order polarization mode dispersion. An element is envisaged which twists the polarization principal axes by an appropriate angle at the output of an arrangement for producing first-order PMD, and the light signal exiting this element is fed into an arrangement which is also an arrangement for producing first-order PMD to produce an output signal having both first- and second-order PMD.

    Abstract translation: 通过双折射元件产生可预定的偏振模色散的装置和方法提供二阶偏振模色散的产生。 设想了一种将偏振主轴在适于产生一阶PMD的装置的输出端处以适当角度扭转的元件,并将离开该元件的光信号馈送到一种布置中,该布置也是用于产生一阶PMD 以产生具有一阶和二阶PMD的输出信号。

    Fiber polarimeter, the use thereof, as well as polarimetric method
    10.
    发明授权
    Fiber polarimeter, the use thereof, as well as polarimetric method 有权
    光纤偏振计,其使用方法以及极化法

    公开(公告)号:US07495765B2

    公开(公告)日:2009-02-24

    申请号:US11388519

    申请日:2006-03-24

    CPC classification number: G01J4/04 G01J3/1895

    Abstract: A fiber polarimeter has one or more oblique fiber Bragg gratings disposed one behind the other in a fiber. The fiber Bragg gratings couple out portions of a light wave input to the fiber depending on its polarization. For more than one fiber Bragg grating a wave plate is disposed in the fiber between consecutive fiber Bragg gratings. The portions of the light wave from the fiber Bragg grating(s) are detected to produce measurement data that is used to calculate four Stokes parameters for determining polarization, degree of polarization and/or power of the light wave.

    Abstract translation: 光纤偏振计具有在光纤中一个在另一个之后设置的一个或多个倾斜光纤布拉格光栅。 纤维布拉格光栅根据其极化将耦合到输入到光纤的光波的部分。 对于多于一个的光纤布拉格光栅,在连续的光纤布拉格光栅之间的光纤中设置波片。 检测来自光纤布拉格光栅的光波的部分,以产生用于计算用于确定光波的偏振度,偏振度和/或光功率的四个斯托克斯参数的测量数据。

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