摘要
设计了一种阶跃结构的八角光子晶体光纤,采用频域有限差分法研究了内、外层空气孔直径d1、d2和孔间距Λ对色散的影响,实现了在波长1.1~1.9μm范围内其色散值变化仅为-0.5~1.5ps/（km.nm）的宽带低平坦色散特性,并总结了获得低平坦色散的一般方法;与普通光纤相比,可调参数更多,可控特性更灵活,能更好的满足当前波分复用的需求。
A novel octagonal photonic crystal fiber with step-structure was designed.The dispersion of several different structure O-PCF was numerically calculated by using 2D-FDTD,The influences on the dispersion from the air hole diameters and hole pitch was also analysed.This kind of O-PCF has broadband ultra-flattened lower dispersion.At the range of wavelength 1.1~1.9μm,the dispersion coefficient merely changing from-0.5~1.5ps/（km·nm）.Compared with the traditional PCF,it is more flexible to be designed with more adjustable dimension parameters and it could satisfy the requirement of present WDM system.
出处
《光通信技术》
CSCD
北大核心
2011年第8期56-58,共3页
Optical Communication Technology
