Cascaded Hybrid amplifier control method and system

Abstract

The invention provides a cascaded Hybrid amplifier control method and system. All the Hybrid amplifiers in the cascaded Hybrid amplifiers start to perform pump turn-on flow simultaneously: when the Hybrid amplifiers receive a pump turn-on request, Raman input optical power stability judgment is performed when the conditions of satisfaction are judged, operation of pump turn-on is performed on an EDFA, and the EDFA enters an APC working mode; operation of pump turn-on is performed the Raman, and gain deviation is calculated according to calculation of input optical power before and after pump turn-on of the Raman when there is no reflecting alarm; Raman gain is adjusted according to the gain deviation, an AGC working mode is switched on after completion of judgment, and the AGC working mode is an automatic gain control working mode; and the working mode of the EDFA is switched to the AGC working mode. The gain of the Raman can be accurately controlled so that control precision is enhanced and performance of the cascaded Hybrid amplifiers can be improved.

Description

technical field [0001] The invention belongs to the field of power distribution operation, and in particular relates to a control method and system of a cascaded Hybrid amplifier. Background technique [0002] At present, the main method of Raman gain control in Hybrid amplifier (hybrid amplifier) ​​is still based on the control method of feedforward and feedback. Such a control method is proved to be effective in practical engineering applications, but it is not perfect in Raman's gain control accuracy. Therefore, some control techniques using gain calibration methods to improve Raman's gain accuracy have been proposed, so that for a single Hybrid in the laboratory, Raman's gain control accuracy is improved; however, in actual engineering applications, for multiple When the Hybrid cascade is used, this method of gain calibration will be invalid. see figure 1 , and the three Hybrid amplifiers are recorded as Hybrid1, Hybrid2, and Hybrid3 respectively, and each Hybrid ampl...

AI Technical Summary

Problems solved by technology

Such a control method has been proved to be effective in practical engineering applications, but it is not perfect in Raman's gain control accuracy

Therefore, some control techniques using gain calibration methods to improve Raman's gain accuracy have been proposed, so that for a single Hybrid in the laboratory, Raman's gain control accuracy is improved; however, in actual engineering applications, for multiple When the Hybrid cascade is used, this method of gain calibration will fail

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