In order to optimize communication and output properties of signal laser system,with linear approximation method and loss-noise model of single mode laser driven by colored pump noise and quantum noise whose real and imaginary part are cross-correlated,the steady-state mean intensity correlation function and signal-to-noise ratio are calculated with an input additive periodic signal.The new physical quantity K is used to describing optimal properties of laser system.Two maximums are existed between the relationship of K and net-gain coefficient;one maximum is existed between K and self-saturation coefficient;the monotonous increase is existed between K and self-correlation time of pump noise.The peak indicates the best match of the laser communication system.Meanwhile the influence of the input signal on the optimized laser system is analyzed.