宽带色散补偿光子晶体光纤的设计与优化  

Design of photonic crystal fiber for broadband dispersion compensation

作　　者：汪徐德[1] 罗爱平[1] 徐文成[1] 邓丽琼[1] 朱日丹[1] 刘颂豪[1] 

机构地区：[1]华南师范大学信息光电子科技学院光子信息技术实验室

出　　处：《光学技术》2007年第6期899-902,共4页Optical Technique

基　　金：广东省自然科学基金资助项目(04010397)

摘　　要：提出了一种新型的宽带色散补偿光子晶体光纤。通过增大光子晶体光纤(PCF)包层第一环空气孔半径r1,同时优化孔间距和包层其它环空气孔,在1550nm波长处获得了低至-1906.4ps/nm/km的负色散值。针对常规单模光纤的色散特性,设计出了宽带色散补偿光子晶体光纤,可补偿23倍长度的常规光纤,补偿的带宽达330nm,这在WDM系统中对多个信道同时进行色散补偿具有非常重要的意义。A novel photonic crystal fiber （PCF） is designed for broadband dispersion compensation. By increasing the size of the first ring air holes and tailoring other structural parameters, the PCF achieves a negative dispersion of - 1906.4ps/nm/ km at 1550nm. Furthermore, according to the dispersion property of the conventional fiber, the broadband dispersion compen- sation PCF is designed and the large normal dispersion is up to - 398. 9296ps/nm/km, which means it can compensate 23 times of length of conventional single-mode fiber within ± 0.2ps/nm/km over 330nm wavelength range. The PCF is a promising component for dispersion compensation in WDM system.

关 键 词：光子晶体光纤 色散补偿 有限差分法 

分 类 号：TN253[电子电信—物理电子学]