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1. 发明授权

EP1394524B1 Method and system for accurately measuring low values of polarization mode dispersion in an optical fiber using localized external perturbation induced low mode coupling 有权
标题翻译：方法和装置，用于使用局部，外部干扰引起的低模耦合在光纤精确地测量低Dispersionsswerten在Polarisationssmodus
公开(公告)号：EP1394524B1
公开(公告)日：2011-08-10
申请号：EP03014199.8
申请日：2003-06-24
申请人： FITEL USA CORPORATION (a Delaware Corporation)
发明人： Sengupta, Abhijit , Mccurdy, Alan
IPC分类号： G01M11/00
CPC分类号： H04B10/2569 , G01M11/336

2. 发明授权

EP0937973B1 Wavelength dispersion measuring apparatus and polarization dispersion measuring apparatus 有权
标题翻译：设备，用于测量的波长色散和偏振色散测量装置
公开(公告)号：EP0937973B1
公开(公告)日：2007-09-05
申请号：EP99103133.7
申请日：1999-02-17
申请人： ANRITSU CORPORATION , NIPPON TELEGRAPH AND TELEPHONE CORPORATION
发明人： Otani, Akihito , Otsubo, Toshinobu , Takara, Hidehiko c/o Nippon Telegr. & Tele. Corp. , Kawanishi, Satoki c/o Nippon Telegr. & Tele. Corp. , Yamabayashi, Yoshiaki c/o Nippon Telegr.& Tel.Cor.
IPC分类号： G01J9/02 , G01M11/00
CPC分类号： G01M11/336 , G01J4/00 , G01J7/00 , G01J2009/0261 , G01M11/332 , G01M11/335

3. 发明授权

EP1170890B1 Compensation of polarization mode dispersion 有权
标题翻译：偏振模色散补偿
公开(公告)号：EP1170890B1
公开(公告)日：2007-08-08
申请号：EP00401942.8
申请日：2000-07-06
申请人： Alcatel Lucent
发明人： Penninckx, Denis , Lanne, Stéphanie
IPC分类号： H04B10/18
CPC分类号： H04B10/2569 , G01M11/336

4. 发明授权

EP1325574B1 PMD-EMULATIONS-, MESS- UND KOMPENSATIONSVORRICHTUNG 有权
标题翻译： PMD仿真，测量和补偿装置
公开(公告)号：EP1325574B1
公开(公告)日：2006-11-15
申请号：EP01986813.2
申请日：2001-09-18
申请人： THORLABS GmbH
发明人： KRAUSE, Egbert , BANDEMER, Adalbert Dr.
IPC分类号： H04B10/18
CPC分类号： H04B10/2569 , G01M11/336
摘要： The invention relates more particularly to an emulation device for emulation of a polarisation mode dispersion (PMD) of an optical transmission system, comprising the following: an emulator input for an optical input signal; at least one controllable double refracting polarisation transformation element having a transformation element input and output which is used for polarisation transformation of said optical signal; at least one double refracting DGD element having a DGD input and a DGD output, said DGD element having a differential group delay time (DGD) between two mutually orthogonally polarised propagation modes of the DGD element; and an emulator output for a PMD-modified optical output signal, said polarisation transformation element and DGD element being disposed in relation to each other in the optical signal path between the emulator input and the emulator output, whereby the double refracting axes on the transformation element output are twisted at a torsional angle which is different from zero degrees in relation to the double refracting axes of the DGD input. Also disclosed is a novel PMD compensation device and a novel measurement device.

5. 发明公开

EP1551118A3 Method for increasing accuracy of measurement of mean polarization mode dispersion 有权
标题翻译：一种用于改善偏振模色散的平均值的测量的准确度的方法
公开(公告)号：EP1551118A3
公开(公告)日：2006-07-26
申请号：EP04106929.5
申请日：2004-12-23
申请人： AT&T Corp.
发明人： Boroditsky, Mikhail , Brodsky, Mikhail , Frigo, Nicholas, J. , Magill, Peter
IPC分类号： H04B10/18 , G01M11/00
CPC分类号： G01M11/336 , G01M11/331 , H04B10/2569
摘要： The present invention provides a method for increasing the accuracy of measurement of mean differential group delay (DGD) from the polarization mode dispersion (PMD) in optical fiber. The method includes a systematic correction to mean-square DGD measured with any conventional mean to minimize systematic error caused by finite source bandwidth. The method further includes a systematic correction to the measurement of mean DGD and mean square DGD from statistics of the second-order PMD (SOPMD) obtained with frequency domain PMD-measuring apparatus. The probability density function (PDF) of either the vector or scalar SOPMD is applied, depending on which quantity is measured. The systematic correction is made to minimize the systematic error in estimating mean DGD, caused by finite source bandwidth, to achieve a two-fold reduction of the measurement variance equivalent to doubling the source bandwidth.

6. 发明公开

EP1551118A2 Method for increasing accuracy of measurement of mean polarization mode dispersion 有权
标题翻译：一种用于改善偏振模色散的平均值的测量的准确度的方法
公开(公告)号：EP1551118A2
公开(公告)日：2005-07-06
申请号：EP04106929.5
申请日：2004-12-23
申请人： AT&T Corp.
发明人： Boroditsky, Mikhail , Brodsky, Mikhail , Frigo, Nicholas, J. , Magill, Peter
IPC分类号： H04B10/18
CPC分类号： G01M11/336 , G01M11/331 , H04B10/2569
摘要： The present invention provides a method for increasing the accuracy of measurement of mean differential group delay (DGD) from the polarization mode dispersion (PMD) in optical fiber. The method includes a systematic correction to mean-square DGD measured with any conventional mean to minimize systematic error caused by finite source bandwidth. The method further includes a systematic correction to the measurement of mean DGD and mean square DGD from statistics of the second-order PMD (SOPMD) obtained with frequency domain PMD-measuring apparatus. The probability density function (PDF) of either the vector or scalar SOPMD is applied, depending on which quantity is measured. The systematic correction is made to minimize the systematic error in estimating mean DGD, caused by finite source bandwidth, to achieve a two-fold reduction of the measurement variance equivalent to doubling the source bandwidth.
摘要翻译：本发明提供一种用于从光纤的偏振模色散（PMD）增加的平均差分群时延（DGD）的测量的精度的方法。该方法包括：一个系统的校正均方根与任何常规测量的平均，以尽量减少由有限带宽源引起的系统误差DGD。该方法还包括一个系统的校正，以平均DGD的测量以及从与频域PMD测量装置获得的第二阶PMD（SOPMD）的统计均方DGD。无论是矢量或标量SOPMD的概率密度函数（PDF）被施加，这取决于哪个量被测量。系统的校正，以最小化的系统误差在估计平均DGD，通过有限带宽源引起的，以实现所述测量方差等效的两倍减少到源带宽加倍。

7. 发明公开

EP1376907A1 Method and system for measuring the polarization mode dispersion of an optical signal transmitting device 审中-公开
标题翻译： Verfahren und System zur Messung der Polarisationsmodendispersion einer optischenSignalübertragungsvorrichtung
公开(公告)号：EP1376907A1
公开(公告)日：2004-01-02
申请号：EP02014317.8
申请日：2002-06-27
申请人： Adaptif Photonics GmbH
发明人： Rosenfeldt, Harald, Dipl.-Ing.
IPC分类号： H04B10/18 , H04B10/08
CPC分类号： H04B10/2569 , G01M11/331 , G01M11/336 , H04B10/0775
摘要： Method for measuring the polarization mode dispersion of an optical signal transmitting device (10), comprising the steps of:

transmitting an optical data signal (12) through said device (10) from a transmitter side (14) to a receiver side (16)
passing a test signal (18) through the device (10) in a direction from the receiver side (16) to the transmitter side (14), and
measuring a characteristic parameter of the test signal (18) which has passed through the device.
摘要翻译：用于测量光信号发射设备（10）的偏振模色散的方法，包括以下步骤：通过所述设备（10）将光数据信号（12）从发射机侧（14）传输到接收机侧（16）在从接收器侧（16）到发射机侧（14）的方向上通过设备（10）的测试信号（18），并测量已经通过设备的测试信号（18）的特征参数。

8. 发明公开

EP1179728A3 Wavelength dispersion measuring device and method 审中-公开
标题翻译：装置和方法，用于测量的波长分散
公开(公告)号：EP1179728A3
公开(公告)日：2003-08-20
申请号：EP01104531.7
申请日：2001-03-02
申请人： FUJITSU LIMITED
发明人： Ibukuro, Sadao, Fujitsu Limited , Ishikawa, George, Fujitsu Limited
IPC分类号： G01M11/00
CPC分类号： G01M11/335 , G01M11/333 , G01M11/336
摘要： A signal having a low frequency f m is superposed on a signal having a high frequency f 1 . The light having the frequency f s is modulated and transmitted to a transmission line as a wavelength dispersion measurement light. A local oscillation light is multiplexed with the wavelength dispersion measurement light, and heterodyne-detected on a receiving side. Sideband components generated by modulating the frequency f s within the heterodyne-detected wavelength dispersion measurement light are extracted by bandpass filters, and the wavelength dispersion value of the transmission line is calculated by detecting the phase difference between the sideband components.

9. 发明公开

EP1281251A2 PMD-KOMPENSATOR 审中-公开
公开(公告)号：EP1281251A2
公开(公告)日：2003-02-05
申请号：EP01947131.7
申请日：2001-05-07
申请人： Profile Optische Systeme GmbH
发明人： BANDEMER, Adalbert , KRAUSE, Egbert
IPC分类号： H04B10/18 , G02B6/27 , G02B6/34
CPC分类号： G01M11/336 , H04B10/2569
摘要： The invention relates to a system for compensating for polarization mode dispersion (PMD) related distortions in optical transmission systems and, in particular, transmission fibers comprising: a measuring device for PMD-related distortions; an emulation unit for adjustable PMD values; a polarization transformation element, which matches the polarization of the signal exiting a transmission system to the PMD emulation unit; an evaluation and control unit on which the output signal of the measuring device is located and which controls the emulation unit and the polarization matching element. The invention is characterized in that the emulation unit comprises a PMD emulator, which emulates second order or higher PMD and reproduces the PMD of a real transmission fiber in a most exact possible manner, and in that the at least one PMD emulator compensates one or more transmission channels and/or that the measuring device optically detects the PMD directly or via the detection of polarization states.
摘要翻译：本发明涉及一种用于补偿光传输系统中的偏振模色散（PMD）相关失真的系统，特别是传输光纤，该系统包括：用于PMD相关失真的测量装置; 用于可调PMD值的仿真单元; 偏振变换元件，其将离开传输系统的信号的偏振匹配到PMD仿真单元; 评估和控制单元，测量装置的输出信号位于该评估和控制单元上并且控制仿真单元和偏振匹配元件。本发明的特征在于，仿真单元包括PMD仿真器，其仿真二阶或更高PMD并以最准确可能的方式再现实际传输光纤的PMD，并且至少一个PMD仿真器补偿一个或多个传输通道和/或测量设备直接或通过检测偏振态来光学检测PMD。

10. 发明公开

EP1202039A1 Calibration and/or verification of a measurement setup 审中-公开
标题翻译： Kalibrierung und / oder Verifizierung eines Messaufbaus
公开(公告)号：EP1202039A1
公开(公告)日：2002-05-02
申请号：EP01118330.8
申请日：2001-07-27
申请人： Agilent Technologies, Inc. (a Delaware corporation)
发明人： Ziegler, Patrick , Stolte, Ralf
IPC分类号： G01M11/00
CPC分类号： G01M11/336 , G01M11/31 , G01M11/337 , G01M11/338 , G01N21/21
摘要： The present invention relates to calibration and verification of a measurement setup for determination of optical properties, e.g. polarization dependent loss (PDL), polarization mode dispersion (PMD), differential group delay (DGD), insertion loss, return loss and/or chromatic dispersion (CD), of a device under test (DUT) in transmission and in reflection of an optical beam. The invention is disclosing an element that is at least partly transmissive and at least partly reflective.
摘要翻译：本发明涉及用于确定光学特性的测量装置的校准和验证，例如，被测器件（DUT）在透射和反射中的偏振相关损耗（PDL），偏振模色散（PMD），差分群延迟（DGD），插入损耗，回波损耗和/或色散（CD）光束。本发明公开了至少部分透射且至少部分反射的元件。

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