In optical communication , the transmission signal of the laser interface is disturbed by the line spectrum disturbance of the color noise, which leads to the distortion of the output error code. It is necessary to carry out the filtering processing of the interference signal. A filtering technique for the interference signal of the laser interface based on the adaptive lattice IIR notch processing is proposed. The characteristic quantity of the output signal of the laser interface in the optical fiber communication is extracted. The adaptive filtering method is used to enhance the line spectrum of the optical fiber communication signal, and the average statistic of the laser interface transmission signal is extracted by the autocorrelation matching method. The phase coupling method is used to decompose the signal spectrum, and the extraction of the signal is extracted. The eigenvalue of the interference signal is used in the adaptive lattice IIR trapping method for feature decomposition and blind source separation , which can effectively filter the interference signal of the laser interface in the optical fiber communication. The simulation results show that the filtering performance of the interference signal of the laser interface in optical fiber communication is better, the signal to noise ratio of the output signal is high , and the signal fidelity of the laser communication transmission is improved.
optical fiber communication
laser interface interference signal