Feng Lipeng, Li Yan, Wu Sihan, Zeng Xinglin, Li Wei, Qiu Jifang, Zuo Yong, Hong Xiaobin, Guo Hongxiang, Yu Huang, Wu Jian
Opt Express. 2019 Apr 29;27(9):13150-13159. doi: 10.1364/OE.27.013150.
We propose and experimentally demonstrate a novel scheme to generate LP/LP modes with tunable mode lobe orientation (MLO). Wherein, the MLOs have an excellent linear relationship with the linearly-polarized states of input fundamental modes. The proposed scheme is composed of a polarization controller (PC), a mode converter, a mode and polarization controller (PMC) which is twined with the few mode fiber (FMF) and a polarizer. Experimental results show that the deviations of MLOs between generated LP/LP modes and simulated ones are less than 3.5 and 8 degrees over C band. Since polarization control up to nanosecond scale is available with GaAs or lithium based electro-optic modulator, the proposed scheme could enable nanosecond time scale MLO control, which would be immensely useful for optical trapping, fiber sensors and optical communications.
我们提出并通过实验证明了一种生成具有可调模式瓣取向（MLO）的LP/LP模式的新颖方案。其中，模式瓣取向与输入基模的线性偏振态具有良好的线性关系。所提出的方案由一个偏振控制器（PC）、一个模式转换器、一个与少模光纤（FMF）缠绕的模式和偏振控制器（PMC）以及一个偏振器组成。实验结果表明，在C波段上，生成的LP/LP模式与模拟模式之间的模式瓣取向偏差小于3.5度和8度。由于使用基于砷化镓或锂的电光调制器可实现纳秒级的偏振控制，因此所提出的方案能够实现纳秒时间尺度的模式瓣取向控制，这对于光镊、光纤传感器和光通信将非常有用。
