RAMAN PUMP LASER CONTROL APPARATUS AND CONTROL METHOD THEREFOR

摘要

A Raman pump laser control apparatus and a control method therefor. The Raman pump laser control apparatus comprises: a wavelength division multiplexer (101), a light-splitting coupler (102), a photoelectric detector (103), an analogue amplification processing circuit (104), an analogue-to-digital converter (105), a rapid Raman pump control unit (106), an analogue-to-digital converter (107), and a Raman pump laser (108). The rapid Raman pump control unit (106), after having known an anticipated output light power of the Raman pump laser (108), based on a direct relationship between a current anticipated output light power of the Raman pump laser (108) and input digital quantity that is needed by the analogue-to-digital converter (107), uses a feedforward control mechanism so that the actual output light power of the Raman pump laser (108) rapidly approximates the anticipated output light power thereof, and then synchronously combines with a feedback control mechanism so that the actual output light power of the Raman pump laser (108) is precisely locked on the anticipated output light power, thereby achieving rapid and precise control of the Raman pump laser (108).