摘要
运用多极法理论，以内四层为研究对象，在三种情况下通过改变包层孔孔径d，设计了三种结构的光子晶体光纤。在包层中内四层空气孔孔径变化，而孔间距保持不变的情况下，数值模拟了其色散系数、限制损耗和基模有效折射率随波长变化的关系和光波模场的存在情况。模拟过程充分展示了所设计的光纤在1．2～1．8μm的宽波段范围内具有低损耗、低平坦色散的传输特性。
Using multi-pole method, based on the inner four rings, by altering the cladding holes diameter d under three cases, three different kinds of photonic crystal fibers（PCFs） were designed. By changing the air holes diameters of the inner four rings while keeping the pitch invariable, the dispersion, the loss and the effective index of fundamental mode of PCFs as a function of wavelength and the existence of mode area of light wave were investigated. The simulation results show that the designed PCFs possess of the characteristics of low loss and low flattened dispersion within the wave band of 1.2 to 1.8μm.
出处
《半导体光电》
CAS
CSCD
北大核心
2008年第4期535-539,共5页
Semiconductor Optoelectronics
基金
国家重点基础研究发展规划项目(2003CB314905)
国家高技术研究发展计划项目(2003AA311010)
关键词
光子晶体光纤
多极法
低损耗
低平坦色散
photonic crystal fiber
multi-pole method
low loss
low flattened dispersion
