Laboratoire Hubert Curien, UMR 5516 CNRS, Université de Lyon, Université Jean Monnet, 42000 Saint Etienne, France.
Opt Lett. 2013 Jun 1;38(11):1924-6. doi: 10.1364/OL.38.001924.
We present optical designs allowing large mode area light guiding by ultrafast laser photoinscription of bulk fused silica. If usual concepts are based on large core and depressed cladding, evanescently coupled multicore waveguides with coherent mode superposition can be effective solutions, where the introduction of nanostructured defects determines additional polarization functions.
我们提出了一些光学设计方案,通过对块状熔融石英进行超快激光光写入,实现了大模式面积的光导。如果采用通常的概念,即大芯层和凹陷包层,那么基于相干模式叠加的消逝场耦合多芯波导可以成为有效的解决方案,其中引入纳米结构缺陷决定了额外的偏振功能。