Euser T G, Whyte G, Scharrer M, Chen J S Y, Abdolvand A, Nold J, Kaminski C F, Russell P St J
Max-Planck Research Group IOIP, University of Erlangen-Nuremberg, Erlangen, Germany.
Opt Express. 2008 Oct 27;16(22):17972-81. doi: 10.1364/oe.16.017972.
We present a versatile method for selective mode coupling into higher-order modes of photonic crystal fibers, using holograms electronically generated by a spatial light modulator. The method enables non-mechanical and completely repeatable changes in the coupling conditions. We have excited higher order modes up to LP(31) in hollow-core photonic crystal fibers. The reproducibility of the coupling allows direct comparison of the losses of different guided modes in both hollow-core bandgap and kagome-lattice photonic crystal fibers. Our results are also relevant to applications in which the intensity distribution of the light inside the fiber is important, such as particle- or atom-guidance.
我们提出了一种通用方法，利用空间光调制器电子生成的全息图，将模式选择性耦合到光子晶体光纤的高阶模式中。该方法能够实现耦合条件的非机械且完全可重复的变化。我们已在空心光子晶体光纤中激发了高达LP(31)的高阶模式。耦合的可重复性使得能够直接比较空心带隙和 Kagome 晶格光子晶体光纤中不同导模的损耗。我们的结果对于光纤内部光强分布很重要的应用（如粒子或原子引导）也具有相关性。
