After analyzing the test results in Figure 3, it can beconcluded that the sampled laser interface signal ofoptical fiber communication is disturbed by noise, whichleads to poor signal resolution, and the effective signal iscovered by a large area, and the effective signal cannot beaccurately identified. The noise in the signal can beeffectively removed and the effective signal can berecovered by using the proposed method. The signalwaveform of noise reduction is more regular. Therefore,the signal noise reduction effect of the proposed method isgood, and it can provide a reliable basis for filtering andseparatinginterferencesignalsofopticalfibercommunication laser interface.