Accelink Technologies Co., Ltd.

Jingyang Fan

Hao Kai Zhang

Chengpeng Fu

Jintao Tao

Lijing Cheng

Bingmei Zeng

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.

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Wuhan, China

Jingyang Fan