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1. (WO2018184461) SYSTEMS AND METHOD OF MULTI-BAND PILOT TONE BASED OPTICAL PERFORMANCE MONITORING

Pub. No.:    WO/2018/184461    International Application No.:    PCT/CN2018/079366
Publication Date: Fri Oct 12 01:59:59 CEST 2018 International Filing Date: Sat Mar 17 00:59:59 CET 2018
IPC: H04J 14/02
H04B 10/077
Applicants: HUAWEI TECHNOLOGIES CO., LTD.
Inventors: JIANG, Zhiping
Title: SYSTEMS AND METHOD OF MULTI-BAND PILOT TONE BASED OPTICAL PERFORMANCE MONITORING
Abstract:
Systems and methods for applying a pilot tone to multiple spectral bands are provided. An initial signal is divided into multiple spectral bands. A pilot tone is applied to each of the spectral bands, and then the signals are again combined for transmission. The pilot tones differ in some way, for example in phase or frequency.