Abstract
We report an experimental and theoretical investigation of the four-wave
mixing (FWM) process between a coherent signal light and an incoherent pump
light in a highly nonlinear fiber. In the experiment, two main phenomena are
observed: 1) the peak power of the spectrum of the coherent signal light
decreases along the fiber rather than be amplified; 2) the spectrum of the
coherent signal is broadened. A theory of the FWM process between incoherent
pump and coherent signal is proposed by considering the incoherence of the
pump which has amplitude and phase fluctuations. The theoretical results
agree with the experimental results.
© 2009 IEEE
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