We present a simple and efficient experimental approach to synchronized dual-wavelength pulsed operation in an all-fiber laser. Four different dual-wavelength emissions of synchronized picosecond pulses are generated through simple adjustments of a wave retarder. Autocorrelation traces exhibit modulation profiles corresponding to dual-wavelength emissions with wavelength separations ranging over one order of magnitude, from 0.96 to 9 nm. In all cases, it is observed stable dual-wavelength operation and perfect synchronization between both pulsed components, without requiring of intra-cavity dispersion management. For the first time, to the best of our knowledge, synchronous tunable dual-wavelength pulse emission in a single-cavity Er/Yb double clad ring fiber laser is experimentally demonstrated.

我们提出了一种在全光纤激光器中同步双波长脉冲操作的简单有效的实验方法。通过对波延迟器的简单调整，可以产生四种不同的同步皮秒脉冲双波长发射。自相关曲线显示出与双波长发射相对应的调制分布，波长间隔范围从 0.96 到 9 nm。在所有情况下，都观察到稳定的双波长操作和两个脉冲分量之间的完美同步，无需腔内色散管理。据我们所知，这是第一次通过实验证明了单腔 Er/Yb 双包层环形光纤激光器中的同步可调双波长脉冲发射。