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Simultaneous ER Enhancement and Frequency Stabilization Scheme for Directly Modulated DFB Lasers
Fiber optics communications Fiber optics links subsystems
2015/6/4
A simultaneous extinction-ratio enhancement and frequency stabilization scheme is proposed for directly modulated DFB lasers at the optical line terminal to enhance signal quality and to stabilize opt...
测试了Er/Yb∶KY(WO4)2晶体在室温下3个轴Ng，Np，Nm方向上的吸收光谱，分析比较光谱特性，并计算出各能级跃迁的吸收截面，其中沿Np轴方向有最强的吸收和较大的吸收截面，这有利于激光上能级的粒子数堆积，增大跃迁几率，加强荧光输出。由于掺入Yb3+离子，晶体在980nm附近有很强的吸收和较大的半峰宽。该晶体在980nm激光泵浦下有上转换绿光和红光，3个晶轴Np，Ng，Nm轴方向的上转换荧光...