公开(公告)号：US08787753B2

公开(公告)日：2014-07-22

申请号：US13717113

申请日：2012-12-17

Applicant: Exfo Inc.

Inventor： Daniel Gariepy ,  Gang He ,  Yves Breton

IPC: H04B10/08

CPC classification number: H04B10/07953

Abstract: 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 (e.g. 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.

Abstract translation: 提供了一种用于确定敏捷多通道密集波分复用（DWDM）光学系统中的带内噪声的方法，其中信道间噪声不代表光信道中的带内噪声。 该方法依赖于对相同输入光信号的两次观察的分析。 在两个观察中，光信号贡献与光噪声贡献（例如观察到的OSNR）之间的线性关系是不同的，这允许在输入光信号中识别信号和噪声贡献。 在第一种方法中，通过输入光信号的偏振分析来提供两个观察结果。 一秒钟，使用两个不同的积分宽度获得输入光信号。

公开(公告)号：US20130163987A1

公开(公告)日：2013-06-27

申请号：US13717113

申请日：2012-12-17

Applicant: EXFO INC.

Inventor： Daniel Gariepy ,  Gang He ,  Yves Breton

IPC: H04B10/08

CPC classification number: H04B10/07953

Abstract: 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 (e.g. 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.

Abstract translation: 提供了一种用于确定敏捷多通道密集波分复用（DWDM）光学系统中的带内噪声的方法，其中信道间噪声不代表光信道中的带内噪声。 该方法依赖于对相同输入光信号的两次观察的分析。 在两个观察中，光信号贡献与光噪声贡献（例如观察到的OSNR）之间的线性关系是不同的，这允许在输入光信号中识别信号和噪声贡献。 在第一种方法中，通过输入光信号的偏振分析来提供两个观察结果。 一秒钟，使用两个不同的积分宽度获得输入光信号。