高非线性高双折射光子晶体光纤特性的理论研究  

Theoretical Investigation of Photonic Crystal Fiber with Highly Nonlinear and Birefringent

作　　者：李德月[1] 周桂耀[1,2,3] 夏长明[1] 刘建涛[1] 苑金辉[3] 侯蓝田[1,2] 

机构地区：[1]燕山大学红外光纤与传感研究所,河北秦皇岛066004 [2]燕山大学亚稳材料制备科学与技术国家重点实验室,河北秦皇岛066004 [3]华南师范大学微纳光子功能材料与器件重点实验室,广东广州510006

出　　处：《中国激光》2012年第11期53-58,共6页Chinese Journal of Lasers

基　　金：国家973计划(2010CB327604);河北省自然科学基金(F2012203122);南京信息工程大学气象探测与信息处理重点实验室开放基金(KDXS1107)资助课题

摘　　要：基于全矢量有限元法,设计了一种新型零色散波长为1550nm的高非线性双折射光子晶体光纤(PCF),并分析了PCF的有效折射率、有效模面积、双折射、非线性系数以及色散特性。数值结果表明,当光纤包层孔间距Λ为1.6μm,大空气孔直径d1为1.4μm,小空气孔直径d2为0.74μm和0.76μm时,光纤的零色散波长都在1550nm处,该PCF的双折射为4.049×10-3,非线性系数可达28.4km-1·W-1。这种高非线性高双折射PCF,在1550nm通信波段具有非常广泛的应用前景。According to the full-vector finite element method, a new highly nonlinear and birefringence photonic crystal fiber （PCF） with zero-dispersion at wavelength of 1550 nm is designed. The effective refractive index, effective mode area, birefringence, nonlinear coefficient and dispersion characteristics of the PCF are analyzed. Simulation results show that birefringence of the PCF is 4. 049×10-3, and nonlinear coefficient reaches 28.4 km-1 ·W-1 at wavelength of 1550 nm, which are obtained under the condition of cladding air hole pitch size of 1.6 μm, large air hole diameter of 1.4 μm and small air hole diameter of 0.74 μm and 0.76 μm respectively. The PCF has very broad prospect of application in 1550 nm communication band.

关 键 词：光纤光学 光子晶体光纤 高非线性 高双折射 有限元法 

分 类 号：TN253[电子电信—物理电子学]