公开(公告)号：US20130330071A1

公开(公告)日：2013-12-12

申请号：US13965823

申请日：2013-08-13

Applicant: EXFO INC.

Inventor： Gang He ,  Daniel Gariepy ,  Hongxin Chen ,  Bernard Ruchet

IPC: H04B10/073

CPC classification number: H04B10/073 ,  H04B10/0775 ,  H04B10/07953 ,  H04J14/02 ,  H04J14/06

Abstract: 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.

Abstract translation: 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来区分来自ASE-噪声贡献的至少非ASE光学噪声贡献（和 s）; 以及使用鉴别的非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。

公开(公告)号：US09829429B2

公开(公告)日：2017-11-28

申请号：US13767851

申请日：2013-02-14

Applicant: EXFO Inc.

Inventor： Normand Cyr ,  Hongxin Chen ,  Gregory Walter Schinn

IPC: G01N21/21 ,  G01M11/00 ,  G06F17/18

CPC classification number: G01N21/21 ,  G01M11/3163 ,  G01M11/3181 ,  G01M11/335 ,  G01M11/336 ,  G06F17/18

Abstract: A polarization-related characteristic of an optical path is determined from a predetermined function of the mean-square of a plurality of differences between polarization-analyzed optical power parameters corresponding to pairs of wavelengths mutually spaced about a midpoint wavelength by a small optical frequency difference. At least some of the said differences correspond to wavelength pairs measured under conditions where at least one of midpoint wavelength, input state of polarization (I-SOP) or analyzed state of polarization (A-SOP) of a pair is different.

公开(公告)号：US09438336B2

公开(公告)日：2016-09-06

申请号：US13965823

申请日：2013-08-13

Applicant: EXFO INC.

Inventor： Gang He ,  Daniel Gariepy ,  Hongxin Chen ,  Bernard Ruchet

IPC: H04B10/073 ,  H04J14/02 ,  H04J14/06 ,  H04B10/079

CPC classification number: H04B10/073 ,  H04B10/0775 ,  H04B10/07953 ,  H04J14/02 ,  H04J14/06

Abstract: 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.

Abstract translation: 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来区分来自ASE-噪声贡献的至少非ASE光学噪声贡献（和 s）; 以及使用鉴别的非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。

公开(公告)号：US20160161397A9

公开(公告)日：2016-06-09

申请号：US13767851

申请日：2013-02-14

Applicant: EXFO Inc.

Inventor： Normand Cyr ,  Hongxin Chen ,  Gregory Walter Schinn

IPC: G01N21/21 ,  G06F17/18

CPC classification number: G01N21/21 ,  G01M11/3163 ,  G01M11/3181 ,  G01M11/335 ,  G01M11/336 ,  G06F17/18

Abstract: A polarization-related characteristic of an optical path is determined from a predetermined function of the mean-square of a plurality of differences between polarization-analyzed optical power parameters corresponding to pairs of wavelengths mutually spaced about a midpoint wavelength by a small optical frequency difference. At least some of the said differences correspond to wavelength pairs measured under conditions where at least one of midpoint wavelength, input state of polarization (I-SOP) or analyzed state of polarization (A-SOP) of a pair is different.

Abstract translation: 光路的极化相关特性是根据对应于中点波长相互间隔的一对波长的偏振分析光功率参数之间的多个差的平均值的预定函数由小的光频差确定的。 所述差异中的至少一些对应于在一对中点波长，输入偏振态（I-SOP）或分析的偏振状态（A-SOP）中的至少一个不同的条件下测量的波长对。