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1. 发明授权

EP2486678B1 REFERENCE-BASED IN-BAND OSNR MEASUREMENT ON POLARIZATION-MULTIPLEXED SIGNALS 有权转让
公开(公告)号：EP2486678B1
公开(公告)日：2018-08-15
申请号：EP11741802.0
申请日：2011-02-14
申请人： EXFO INC.
发明人： GARIEPY, Daniel , HE, Gang
IPC分类号： H04B10/079
CPC分类号： H04B10/07953
摘要： There is provided a method for determining an in-band noise parameter, such as the Optical Signal-to-Noise Ratio (OSNR), on an optical signal-under-test (SUT) propagating along an optical communication link and comprising a data-carrying signal contribution of any arbitrary degree of polarization and a noise contribution. A spectral shape trace of data-carrying signal contribution in the SUT is estimated using a reference optical spectrum trace of a reference signal which comprises a data-carrying signal contribution that is spectrally representative of the data-carrying signal contribution of the SUT and a noise contribution which is at least approximately known. The data-carrying signal contribution is mathematically discriminated from said noise contribution in the SUT using the spectral shape trace and the test optical spectrum trace. The in-band noise parameter is then determined at least from the mathematically discriminated noise contribution.

2. 发明授权

EP3018839B1 IN-BAND NOISE AND/OR SPECTRAL DEFORMATION MEASUREMENT ON POLARIZATION-MULTIPLEXED SIGNALS 有权转让
公开(公告)号：EP3018839B1
公开(公告)日：2020-01-15
申请号：EP15192157.4
申请日：2015-10-29
申请人： EXFO Inc.
发明人： HE, Gang , GARIEPY, Daniel
IPC分类号： H04B10/077 , H04B10/079

3. 发明授权

EP2140586B1 METHOD AND SYSTEM FOR DETERMINING IN-BAND OPTICAL NOISE 有权转让
公开(公告)号：EP2140586B1
公开(公告)日：2018-05-30
申请号：EP08733726.7
申请日：2008-04-04
申请人： EXFO INC.
发明人： GARIEPY, Daniel , HE, Gang , BRETON, Yves
IPC分类号： H04J14/02 , H04B10/079
CPC分类号： H04B10/07953
摘要： There is provided a method for determining the in-band noise in agile multichannel Dense Wavelength Division Multiplexing (DWDM) optical systems, where the interchannel noise is not representative of the in-band noise in the optical channel. The method relies on the analysis of two observations of the same input optical signal. In the two observations, the linear relationship between the optical signal contribution and the optical noise contribution (i.e. the observed OSNR) is different, which allows the discrimination of the signal and noise contributions in the input optical signal. In a first approach, the two observations are provided by polarization analysis of the input optical signal. In a second, the input optical signal is obtained using two different integration widths.

4. 发明公开

EP3018839A1 IN-BAND NOISE AND/OR SPECTRAL DEFORMATION MEASUREMENT ON POLARIZATION-MULTIPLEXED SIGNALS 有权转让
标题翻译： IN-BAND MESSUNG VON RAUSCHEN UND / ODER SPEKTRALER DEFORMATION AUF POLARISATIONSMULTIPLEXTEN SIGNALEN
公开(公告)号：EP3018839A1
公开(公告)日：2016-05-11
申请号：EP15192157.4
申请日：2015-10-29
申请人： Exfo Inc.
发明人： HE, Gang , GARIEPY, Daniel
IPC分类号： H04B10/077 , H04B10/079
摘要： There is provided a method to discriminate NLE-induced signal deformation from ASE-noise on polarization multiplexed signals, in order to measure the OSNR under NLE conditions and/or characterize the NLE-induced signal deformation. In accordance with one aspect, the method is based on the acquisition of optical spectrum traces when the (data-carrying) optical communication signal is partially or completely extinguished (ASE-noise only), as well as with a live optical communication signal. Comparing traces acquired with different conditions and/or at different dates allows discrimination of the signal contribution, the ASE-noise contribution and the NLE-induced deformations on the SUT.
摘要翻译：提供了一种在偏振复用信号上区分NLE引起的信号变形与ASE噪声的方法，以便在NLE条件下测量OSNR和/或表征NLE引起的信号变形。根据一个方面，该方法基于当（数据携带）光通信信号被部分或完全熄灭（仅ASE-噪声）以及带有实时光通信信号时的光谱踪迹的获取。比较不同条件和/或不同日期获取的踪迹可以区分信号贡献，ASE噪声贡献和NLE引起的SUT变形。

5. 发明公开

EP3495797A1 METHOD AND SYSTEM FOR MULTI-FIBER CABLE TESTING 有权转让
公开(公告)号：EP3495797A1
公开(公告)日：2019-06-12
申请号：EP18209109.0
申请日：2018-11-29
申请人： Exfo Inc.
发明人： PERRON, Stephane , GARIEPY, Daniel , CARON, Nicolas , BARIBAULT, Robert , RACINE, Vincent
IPC分类号： G01M11/00 , G02B6/38 , H04B10/07 , H04B10/70
摘要： There is provided a method, system and image capture device for determining a polarity of a multi-fiber cable link comprising a plurality of optical fiber links each connected between a first multi-fiber connector and a second multi-fiber connector, according to said polarity. Test light is injected into one or more of the optical fiber links via corresponding injection ports of the first multi-fiber connector, in accordance with a defined injection pattern; at least one polarity-testing image of the second multi-fiber connector is generated in which test light exiting at least one of the optical fiber links through one or more exit ports of the second multi-fiber connector is imaged as one or more spotlight spots in the polarity-testing image; and the polarity of the multi-fiber cable link is determined based on a pattern of said one or more spotlight spots in said polarity-testing image.

6. 发明公开

EP2676384A1 CHARACTERIZATION OF NON-ASE NOISE ON OPTICAL SIGNALS 有权转让
标题翻译：特拉华州的非ASE-RAUSCHEN在OPTISCHEN SIGNALEN
公开(公告)号：EP2676384A1
公开(公告)日：2013-12-25
申请号：EP12747668.7
申请日：2012-02-16
申请人： Exfo Inc.
发明人： HE, Gang , GARIEPY, Daniel , CHEN, Hongxin , RUCHET, Bernard
IPC分类号： H04B10/08
CPC分类号： H04B10/073 , H04B10/0775 , H04B10/07953 , H04J14/02 , H04J14/06
摘要： There is provided a method for determining a noise parameter characterizing an optical Signal-Under-Test (SUT) having a signal contribution, an Amplified Spontaneous Emission (ASE) noise contribution and a non-ASE optical noise contribution, such as a carrier-leakage contribution or a depolarized-signal contribution, within an optical-signal bandwidth. The method comprises acquiring optical spectrum trace(s) of the SUT, discriminating at least the non-ASE optical noise contribution from the ASE-noise contribution using the optical spectrum trace(s) and/or a trace obtained from the optical spectrum trace(s); and determining the noise parameter using discriminated non-ASE optical noise contribution and/or the discriminated ASE-noise contribution.
摘要翻译：提供了一种用于确定表征具有信号贡献，放大自发发射（ASE）噪声贡献和非ASE光学噪声贡献的光信号不足（SUT）的噪声参数的方法，例如载波泄漏贡献或去极化信号贡献，在光信号带宽内。该方法包括获取SUT的光谱轨迹，使用光谱轨迹和/或从光谱轨迹获得的轨迹，从ASE噪声贡献中至少区分非ASE光学噪声贡献或多个）; 以及使用识别的非ASE光学噪声贡献和/或所识别的ASE噪声贡献来确定噪声参数。

7. 发明公开

EP2486678A1 REFERENCE-BASED IN-BAND OSNR MEASUREMENT ON POLARIZATION-MULTIPLEXED SIGNALS 有权转让
标题翻译：参考基带INTERNAL OSNR测量由偏振复用信号
公开(公告)号：EP2486678A1
公开(公告)日：2012-08-15
申请号：EP11741802.0
申请日：2011-02-14
申请人： Exfo Inc.
发明人： GARIEPY, Daniel , HE, Gang
IPC分类号： H04B10/08
CPC分类号： H04B10/07953
摘要： There is provided a method for determining an in-band noise parameter, such as the Optical Signal-to-Noise Ratio (OSNR), on an optical signal-under-test (SUT) propagating along an optical communication link and comprising a data-carrying signal contribution of any arbitrary degree of polarization and a noise contribution. A spectral shape trace of signal contribution in the SUT is estimated using a reference optical spectrum trace of a reference signal which comprises a signal contribution that is spectrally representative of the signal contribution of the SUT and a noise contribution which is at least approximately known. The signal contribution is mathematically discriminated from said noise contribution in the SUT using the spectral shape trace and the test optical spectrum trace. The in-band noise parameter is then determined at least from the mathematically discriminated noise contribution.

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