公开(公告)号：US20170373748A1

公开(公告)日：2017-12-28

申请号：US15200325

申请日：2016-07-01

Applicant: Huawei Technologies Co., Ltd.

Inventor： Zhiping Jiang ,  Tejia Liu ,  Hong Yang ,  Dajiang Jin ,  Minggang Si

IPC: H04B10/077

Abstract: The disclosure is directed at a method and system for optical telecommunications performance monitoring via a dual frequency pilot tone. By applying a dual frequency pilot tone, with a first pilot tone frequency selected from a low frequency band and a second pilot tone frequency selected from a high frequency band, either simultaneously or alternatively, to a wavelength channel, one of the pilot tone frequencies may be adaptively selected to improve wavelength channel monitoring. More specifically, stimulated Raman scattering (SRS) caused crosstalk and chromatic dispersion (CD) caused pilot fading which adversely affect performance monitoring of the wavelength channel may be reduced.

公开(公告)号：US10432303B2

公开(公告)日：2019-10-01

申请号：US15200325

申请日：2016-07-01

Applicant: Huawei Technologies Co., Ltd.

Inventor： Zhiping Jiang ,  Tejia Liu ,  Hong Yang ,  Dajiang Jin ,  Minggang Si

IPC: H04B10/08 ,  H04B10/077 ,  H04J14/02

Abstract: The disclosure is directed at a method and system for optical telecommunications performance monitoring via a dual frequency pilot tone. By applying a dual frequency pilot tone, with a first pilot tone frequency selected from a low frequency band and a second pilot tone frequency selected from a high frequency band, either simultaneously or alternatively, to a wavelength channel, one of the pilot tone frequencies may be adaptively selected to improve wavelength channel monitoring. More specifically, stimulated Raman scattering (SRS) caused crosstalk and chromatic dispersion (CD) caused pilot fading which adversely affect performance monitoring of the wavelength channel may be reduced.