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针对主动式相干合成技术的相位存在实时控制难度大、不容易拓展等限制,研究了被动式相干合成技术。介绍和讨论了被动式相干合成技术的一个分支——相互注入式光纤激光器耦合阵列相干合成,重点介绍了该技术的最新发展,对具有代表性的研究方案进行了分析和对比,并提出了改进方法。进而利用噪声理论模型来研究相互注入式光纤激光器阵列的被动锁相机理,通过单元激光器噪声的随机过程进行建模,验证了各种因素对噪声的影响,并利用统计知识计算了系统噪声的随机过程,对系统的拓展性进行了预测。
In view of the fact that the phase of the active coherent synthesis technique is difficult to control in real time and difficult to expand, the passive coherent synthesis technique is studied. Introduced and discussed a branch of passive coherent synthesis technology - coherent combination of mutual injection type fiber laser coupling array, introduced the latest development of this technology, analyzed and compared the representative research programs, and proposed improved methods . Then the noise theory model is used to study the passive phase lock mechanism of the mutual injection type fiber laser array. The random noise of the unit laser is modeled by random process, which verifies the influence of various factors on the noise. The statistical noise is used to calculate the randomness of the system noise Process, the expansion of the system has been predicted.