The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Jun. 07, 2016
Filed:
Dec. 27, 2013
Huawei Technologies Co., Ltd., Shenzhen, CN;
Zhiping Jiang, Kanata, CA;
Jian Zhong, Kanata, CA;
Futurewei Technologies, Inc., Plano, TX (US);
Abstract
System, apparatus, and method embodiments are provided for suppressing the stimulated Raman scattering (SRS) crosstalk in multiple wavelength channel signals propagating in fiber links, such as in WDM/DWDM or other optical communications systems. The SRS is reduced or suppressed by separating the channels into two sets of different channels, such as even and odd channels, and then performing subtraction of signal amplitudes between the two sets of channels. The channels are separated by an interleaver into the two sets. Alternatively, a wavelength selective switch (WSS) is used to separate the channels into the two sets on which the subtraction of signal amplitudes is then performed. In an embodiment, the signals are low frequency modulation signals used for channel monitoring for optical communications systems.