光子晶体光纤的色散特性研究

摘要

The influence of cladding air holes and filling rate on the dispersion characteristics of photonic crystal fiber is studied.The results show that the dispersion characteristics of photonic crystal fiber can be changed flexibly by ad-justing package layer hole pitch and air holes.Based on this situation,relatively flat dispersion curve can be designed near a given wavelength at 1550nm.The finite element method was used to simulate the optical field distribution of transmission in the photonic crystal fiber,which is of great significance in the long and large capacity optical communi-cation system.%对包层空气孔大小及填充率对光子晶体光纤的色散特性影响进行了研究，研究结果表明通过调节光子晶体光纤包层孔间距或是空气孔半径可以灵活地改变光子晶体光纤的色散特性，由此可以设计在波长1550 nm附近具有相对平坦的色散特性曲线，用有限元法模拟了光在光子晶体光纤中传输的场分布，在长距离大容量光通信系统中获得很好的应用。