Opt Lett. 2018 Aug 1;43(15):3758-3761. doi: 10.1364/OL.43.003758.
Single-mode operation of coupled optical systems, such as optical-fiber bundles, lattices of photonic waveguides, or laser arrays, requires an efficient method to suppress unwanted super-modes. Here, we propose a systematic supersymmetry-based approach to selectively eliminate modes of such systems by decreasing their lifetime relative to the lifetime of the mode of interest. The proposed method allows to explore the opto-geometric parameters of the coupled system and to maximize the relative lifetime of a selected mode. We report a 10-fold increase in the relative lifetime of the fundamental modes of large one-dimensional coupled arrays in comparison to simple "head-to-tail" coupling geometries. The ability to select multiple supported modes in one- and two-dimensional arrays is also demonstrated.
单模操作的耦合光学系统，如光纤束、光子波导的晶格或激光阵列，需要一种有效的方法来抑制不需要的超模式。在这里，我们提出了一种基于对称性的系统方法，通过降低与感兴趣模式的寿命相比的相对寿命来选择性地消除这些系统的模式。所提出的方法允许探索耦合系统的光几何参数，并最大化所选模式的相对寿命。我们报告了一维大耦合阵列的基本模式的相对寿命与简单的“头尾”耦合几何相比增加了 10 倍。还证明了在一维和二维阵列中选择多个支持模式的能力。
