Huang Liangjin, Leng Jinyong, Zhou Pu, Guo Shaofeng, Lü Haibin, Cheng Xiang'ai
Opt Express. 2015 Oct 19;23(21):28082-90. doi: 10.1364/OE.23.028082.
A novel approach to adaptively control the beam profile in a few-mode fiber is experimentally demonstrated. We stress the fiber through an electric-controlled polarization controller, whose driven voltage depends on the current and target modal content difference obtained with the real-time mode decomposition. We have achieved selective excitations of LP01 and LP11 modes, as well as significant improvement of the beam quality factor, which may play crucial roles for high-power fiber lasers, fiber based telecommunication systems and other fundamental researches and applications.
实验证明了一种在少模光纤中自适应控制光束轮廓的新方法。我们通过电控偏振控制器对光纤施加应力，该控制器的驱动电压取决于通过实时模式分解获得的当前模式与目标模式含量差异。我们实现了对LP01和LP11模式的选择性激发，以及光束质量因子的显著改善，这对于高功率光纤激光器、基于光纤的通信系统以及其他基础研究和应用可能具有至关重要的作用。
