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中文摘要：
以单周期注入为例，数值模拟并讨论了注入频率和注入光场波动强度对LD同步特性的影响。从功率和相位角度讨论了LD注入锁定的实现，并使用相似指数作为参考标准来评价同步性能。结果表明：注入光场的频率和振幅波动对系统的动态特性和同步性能有显著影响。当注入强度足够大时，系统实现注入锁定；增大调制指数，将抑制同步区域。因此，可以通过增加注入强度或减少注入振幅波动来实现精确同步。研究特定注入强度下主LD调制指数和调制频率相空间的同步品质发现，相似指数的最小值出现在调制频率1～10GHz间，且随调制指数的增加向低频方向移动。
英文摘要：
Taking single period injection as an example,the influences of frequency and fluctuation amplitude of the injection field on the dynalmies and synchronization of LD are studied numerically. Both the power and the phase are discussed to evaluate the injection locking of LD. In the simulation,we use a modified correlation coefficient called similarity index to evaluate the synchronization performance. The results show that the frequency and fluctuation amplitude of the injection field play important roles on the dynamics and synchronization of the system. When the injection strength is strong enough, the generalized synchronization will be obtained. The synchronization range is constrained by a large modulation index. So there is a trade-off between increasing injection strength and decreasing injection fluctuation amplitude to achieve good synchronization. Under a certain injection level,the worst synchronization performance appears at a certain frequency of the injection field, from 1 GHz to 10 GHz,in the phase space of the master laser＇s modulation index and modulation frequency. This minimum decreases and trends to appear at a lower frequency while increasing modulation index.
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