Shanghai Key Laboratory of Modern Optical System, School of Optical-Electrical and Computer Engineering, University of Shanghai for Science and Technology, Shanghai, China.
Opt Lett. 2013 Aug 1;38(15):2915-8. doi: 10.1364/OL.38.002915.
We present a novel structure for holey fibers (HFs) with endlessly single-polarization single-mode characteristics, which is realized by introducing four elliptical airholes arranged in a hexagonal matrix in the core region. The validation of the design is done by use of a full-vectorial finite element method. We exhibit one typical design that can deliver a single-polarization single-mode region of more than 2400 nm with a confinement loss level lower than 0.01 dB/km. We have also shown that the persevered polarization state possesses a wide wavelength band of flat dispersion behavior. As a consequence, such HFs are useful in high-speed communication systems or optical-fiber sensors since they are free of polarization mode dispersion and simultaneously immune to cross-talk effect.
我们提出了一种具有无穷单偏振单模特性的新型空芯光纤（HF）结构，该结构通过在纤芯区域中引入四个排列在六边形矩阵中的椭圆空气孔来实现。该设计的验证是通过全矢量有限元法完成的。我们展示了一个典型的设计，该设计可以提供超过 2400nm 的单偏振单模区域，并且限制损耗水平低于 0.01dB/km。我们还表明，保持的偏振状态具有宽的波长带宽的平坦色散行为。因此，由于它们不受偏振模色散的影响并且同时免受串扰效应的影响，因此这种 HF 可用于高速通信系统或光纤传感器中。
