An apparatus and a control method for controlling a Raman pump laser

The present invention relates to a Raman pump laser control apparatus and a control method, wherein the Raman pump laser control apparatus comprising: a WDM, dichroic coupler, a photodetector, an analog processing circuit amplification, an analog fast Raman pump control unit, a digital-Raman pump laser; after flash Raman pump laser Raman pump control unit known in the expected output optical power of the Raman pump laser light output based on current expectations directly related to the required power and the DAC digital input, feed forward control mechanism, Raman pump laser output optical power of the actual fast approaching its intended output light power; resynchronization combined feedback control mechanism, Raman pump Pu actual laser output optical power to pinpoint the expected output optical power, enabling fast and accurate control of the Raman pump laser.