不对称的分布式的反馈纤维激光(DFB FL ) 的 Rayleigh 回来散布的导致的连贯倒塌传感器用一个合成的洞模型被调查。不对称的 DFB FL 传感器的连贯倒塌阀值条件被测量。DFB FL 传感器在不同的泵配置显示出不同动态行为。根据到外部光反馈的不对称的行为,发现不对称的 DFB FL 传感器的实际阶段移动位置的一个新奇方法被介绍。
Rayleigh-back scattering induced coherence collapse of an asymmetric distributed feedback fiber laser (DFB FL) sensor is investigated using a composite cavity model. The coherence collapse threshold condition of the asymmetric DFB FL sensor is measured. The DFB FL sensor shows different dynamic behaviors in different pump configurations. According to the asymmetric behavior to the external optical feedback, a novel method to find the actual phase shift position of the asymmetric DFB FL sensor is presented.