1Ultrafast Laser Laboratory, Key Laboratory of Opto-electronic Information Science and Technology of Ministryof Education, College of Precision Instruments and Opto-electronics Engineering, Tianjin University,300072 Tianjin, China.
Opt Lett. 2010 Feb 15;35(4):493-5. doi: 10.1364/OL.35.000493.
We examine a hybrid multicore photonic-crystal fiber, where the cores are separated by high-index solid rods and the microstructure cladding is built on a hexagonal lattice of air holes in silica. Antiresonant reflection from high-index solid rods is shown to assist the field confinement in the cores of such a fiber. When the cores are doped with a laser-active material, the maximum gain is achieved for the in-phase supermode, which translates into a high-quality Gaussian-like beam profile in the far field.
我们研究了一种混合多芯光子晶体光纤，其中纤芯由高折射率固体棒隔开，微结构包层构建在二氧化硅中的空气孔六方晶格上。高折射率固体棒的反谐振反射被证明有助于这种光纤中纤芯的场限制。当纤芯掺杂激光活性材料时，同相超模实现了最大增益，这在远场转化为高质量的高斯光束。
