光学学报, 2004, 24 (3): 324, 网络出版: 2006-06-12
光子晶体光纤模式特征的研究
The Mode Characteristics of the Photonic Crystal Fibers
光子晶体光纤 等效折射率 功率限制因子 全内反射 光子带隙 photonic crystal fiber (PCF) equivalent-index model power confinement factor total internal reflection (TIR) photonic band gap (PBG)
摘要
从基空间填充模出发,将光子晶体光纤的包层等效成均匀介质,从而将光子晶体光纤等效为阶跃折射率光纤。利用等效折射率模型,对光子晶体光纤的模式特征进行了详尽的研究,主要包括模式特性、传输常量、模场分布、功率限制特性、瑞利散射损耗特性、色散特性,等等。并通过功率限制因子这一参量将它与单模光纤进行比较。结果表明,光子晶体光纤单模工作波长范围比较宽,功率限制因子比较高,可用于制作更高抽运效率的光纤放大器。
Abstract
The equivalent-refractive index model is implemented based on the fundamental space filling mode (FSM), the photonic crystal cladding is considered as a uniform medium, then the photonic crystal fiber is considered as a step-index fiber. The mode characteristics of the photonic crystal fibers (PCF) are investigated in detail using the equivalent-refractive index model, including the propagation constant, the mode-field distribution, the power confinement factor, power loss and dispersion. With the PCF and SMF compared, it is shown that the PCF is almost an endlessly single-mode fiber. The PCF can be used to improve the pump efficiency of EDFAs because its power confinement factor is higher than that of the conventional erbium-doped fibers.
王智, 任国斌, 娄淑琴, 梁伟军, 简水生. 光子晶体光纤模式特征的研究[J]. 光学学报, 2004, 24(3): 324. 王智, 任国斌, 娄淑琴, 梁伟军, 简水生. The Mode Characteristics of the Photonic Crystal Fibers[J]. Acta Optica Sinica, 2004, 24(3): 324.