信号对单模激光损失模型输出特性的影响

为了更好地优化激光通讯系统和激光信号输出稳定性,运用线性化近似方法,采用色泵噪声和实虚部间关联的量子噪声驱动的单模激光损失模型,计算了周期信号加性输入时激光系统的光强关联函数和输出信噪比,用物理量K来描述激光系统的优化选择,发现:K与激光系统的净增益系数存在双极大值;与自饱和系数存在单极大值;与泵噪声自关联时间呈现单调递增的现象,峰值即表示激光通讯系统出现最佳匹配状态。同时,分析了系统的输入信号对优化激光系统的性质的影响。

Effect of signal on the output properties in loss-noise model of single mode laser

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.