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:
May. 06, 2025
Filed:
Dec. 13, 2019
Accelink Technologies Co., Ltd, Wuhan, CN;
Hao Zhang, Wuhan, CN;
Chengpeng Fu, Wuhan, CN;
Jintao Tao, Wuhan, CN;
Lijing Cheng, Wuhan, CN;
Bingmei Zeng, Wuhan, CN;
Jingyang Fan, Wuhan, CN;
Accelink Technologies Co., Ltd., Wuhan, CN;
Abstract
Provided are a method and system for controlling a Raman fiber amplifier. The method comprises: according to a target gain and a tilt, calculating an expected output power of a pump by using a feedforward formula, and obtaining an actual output power of the pump through detection (); locking the actual output power of the pump to the expected output power through first-stage feedback control (); according to the target gain and the tilt, calculating an expected ASE power of the pump by using an ASE formula, and obtaining an actual out-of-band ASE power of the pump through detection (); if the out-of-band ASE is not locked, determining gain compensation and tilt compensation of the pump through second-stage feedback control, and feeding the compensation back to the feedforward formula and the ASE formula for recalculation (); and repeatedly performing the first-stage feedback control and the second-stage feedback control until the gain and the tilt are locked (). In the system, a combination of feedforward and multi-closed loop feedback control is used to realize rapid locking of a pump power and locking of the gain and the tilt compensation, which improves the control precision of the gain and the tilt and accelerates a response speed.