液晶及其不同填充结构对光子晶体光纤传输特性的影响

Effect of liquid crystal and its different filling structure on the transmission properties of photonic crystal fiber

本文研究了各向异性材料对光子晶体光纤光传输特性的影响。由于靠近纤芯的空气孔对光子晶体光纤的影响最大,所以本文分别对靠近纤芯的2个空气孔、3个空气孔和6个空气孔进行填充。对填充各向异性材料的光子晶体光纤的色散、限制损耗和有效模场面积进行了模拟,并对其传输特性进行了详细的分析和讨论。同时进行了各向异性液晶材料填充光子晶体光纤的实验研究。结果表明在通讯波段,填充液晶的光子晶体光纤与相应的有效折射率仿真结果基本一致。该填充光子晶体光纤有较低的限制损耗,在1 550nm达到10-9。较小的有效模场面积和明显的色散零点,因而它在通讯领域有较高的潜力和应用。

This paper studies the effect of anisotropic materials on transmission characteristics for photonic crystal fiber.The influence of the air holes near the core on the photonic crystal fiber are most,so the air holes near the fiber core are respectively proceeding two holes,three holes and six holes filling.The dispersion,confinement loss and effective mode field area of photonic crystal fibers filled with anisotropic materials were simulated,and its transmission characteristics were analyzed and dis-cussed in detail.At the same time,the experimental study of the filled photonic crystal fiber with anisotropic liquid crystal materials was carried out.The results show that,in the telecom band,the experimental results of the filled liquid crystal photonic crystal fiber are basically consistent with simulation results of corresponding effective refractive index.The filled photonic crystal fiber has lower confinement loss,it is 10-9 at 1 550 nm,smaller effective mode field area and obvious zero dispersion,so it has a higher potential and application in the fields of communication.