论文标题
通过全纤维调制，在多模纤维中形成光谱
Spectral Shaping in a Multimode Fiber by All-fiber Modulation
论文作者
论文摘要
在过去的几年中，人们对使用多模纤维进行多种技术（例如通信，成像和光谱法）具有新的兴趣。但是，由于处理模态分散，模式耦合以及纤维对机械扰动的敏感性，多模纤维在此类应用中的实际实现被阻止。在这里，我们利用多模纤维的这些功能来生成全纤维可重构光谱过滤器。通过将计算机控制的机械变形应用于光纤以及优化算法，我们可以操纵光纤中的光传播并控制其输出场。使用这种方法，我们证明了可调的带通滤波器和双波段过滤器，光谱分辨率低至下午5点。
In the past few years, there is a renewed interest in using multimode fibers for a wide range of technologies such as communication, imaging and spectroscopy. Practical implementations of multimode fiber in such applications, however, are held back, due to the challenges in dealing with modal dispersion, mode coupling and the fiber's sensitivity to mechanical perturbations. Here, we utilize these features of multimode fibers to generate all-fiber reconfigurable spectral filters. By applying computer-controlled mechanical deformations to the fiber, along with an optimization algorithm, we manipulate the light propagation in the fiber and control its output field. Using this approach we demonstrate tunable bandpass filters and dual-band filters, with spectral resolutions as low as 5pm.
