Gain controlling method for reversed distributed multipumping Raman amplifier
A Raman amplifier, gain adjustment technology, applied in instruments, wavelength division multiplexing systems, optics, etc., can solve the problems of cumbersome adjustment process, changing gain flatness, etc.
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[0031] The specific embodiment of the present invention is described in further detail below in conjunction with accompanying drawing:
[0032]As shown in Figure 1, the multi-pump inverse Raman amplifier includes a pump laser group, a multiplexer and a proportional coupler. The optical power output by the pump laser group is output through the optical interface Ci after passing through the multiplexer. The amplified signal light is output from the multiplexer W. On the inner side of the signal light output optical interface Co, the signal optical power is collected by a proportional coupler. The detection quantity s-mon of the optical power of the output signal is obtained. The pump laser group is composed of N lasers, and all N lasers are connected to the gain adjustment device through electrical interfaces JP1, JP2, ..., JPN; the pump laser group can output laser radiation that meets the requirements during normal operation . The multiplexer forms a pump light path between...
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