空芯光子晶体光纤导波模式特性分析  

Analysis of guided-mode properties for hollow-core photonic crystal fibers

作　　者：刘二明[1] 孙青[1] 尚亮[1] 常建华[1] 毛庆和[1] 

机构地区：[1]中国科学院安徽光学精密机械研究所安徽省光子器件与材料重点实验室,安徽合肥230031

出　　处：《量子电子学报》2010年第2期252-256,共5页Chinese Journal of Quantum Electronics

摘　　要：采用平面波展开法研究了空芯光子晶体光纤(HC-PCF)的导波模式特性。结果表明,在包层带隙范围内,当导波模的纵向相位传播常数k_s满足一定条件时,才能在HC-PCF纤芯中形成稳定的基模传输;并且,纤芯基模的模场分布与光波长有关,当光波长位于纤芯基模传输曲线中央时,光波能量被很好地约束在纤芯中,而当光波长位于纤芯基模传输曲线的上下边沿时,光波能量将向包层中漏泄。The guided-mode properties of hollow-core photonic crystal fibers（HC-PCFs） were studied with the plane-wave expansion method（PWE）.The simulation results show that,for a given wavelength in the photonic band-gap of the cladding structure,stable fundamental core mode may be obtained only with specific vertical phase propagating constants.Moreover,the mode field distributions of fundamental core modes depend on the wavelength.When the wavelength is right at the center of the fundamental core mode transmitting curve,the mode field may be confined in the air-core perfectly.When the wavelength is near the edges of the fundamental core mode transmitting curve,the energy of guided-wave core modes may leak into the cladding of HC-PCF.

关 键 词：纤维与导波光学 空芯光子晶体光纤 平面波展开法 光子禁带 导波模式 

分 类 号：TN252[电子电信—物理电子学]