论文标题
多模式和单模纤维之间的高效率接口
High-efficiency interface between multi-mode and single-mode fibers
论文作者
论文摘要
多模式纤维（MMF）和单模纤维（SMF）广泛用于光学通信网络中。就需要短距离的应用而言，MMF是实用的选择。除此之外，由于MMF中的模态分散，SMF是必需的。在这里，我们提出了一种能够使用重新编程的多平面光转换方案（MPLC）将MMF与SMF连接的方法。我们证明，对于MMF的MMF，核心直径高达200微米，仅需3阶段调制即可达到MMF到SMF耦合效率。我们展示了如果MMF的输出字段完全变化，例如通过对磁场的简单监视，通过对纤维的强烈变形。此外，我们测试了基本设备（现场重建和MPLC）分辨率对耦合效率的影响。我们发现，具有提高速度和效率的市售设备，例如波前传感器和可变形镜，足以建立MMF到SMF界面，该界面自动纠正KHz策略中的任何去耦。
Multi-mode fibers (MMFs) and single-mode fibers (SMFs) are widely used in optical communication networks. MMFs are the practical choice in terms of cost in applications that require short distances. Beyond that, SMFs are necessary because of the modal dispersion in MMFs. Here, we present a method capable of interfacing an MMF with an SMF using a re-programmable multi-plane light conversion scheme (MPLC). We demonstrate that only 3-phase modulations are necessary to achieve MMF-to-SMF coupling efficiencies from 30\% to 70\% for MMF's with core diameters up to 200 microns. We show how the obtained coupling efficiency can be recovered if the output field of the MMF changes entirely, e.g. through strong deformation of the fiber, by simple monitoring of the field. Furthermore, we test the influence of the resolution of both essential devices (field reconstruction and MPLC) on coupling efficiencies. We find that commercially available devices with increased speed and efficiency, such as wavefront sensors and deformable mirrors, are sufficient for establishing an MMF to SMF interface which auto-corrects any decoupling in the kHz regime.
