一种高双折射高负平坦色散压缩型光子晶体光纤  

A squeezed lattice high negative dispersion and high birefringence photonic crystal fiber

作　　者：武丽敏[1] 宋朋[1] 王静[1] 张海鹍[1] 周城[1] 陈涛[1] 张峰[1] 

机构地区：[1]济南大学物理科学与技术学院,山东济南250022

出　　处：《红外与激光工程》2016年第B05期183-187,共5页Infrared and Laser Engineering

基　　金：国家自然科学基金(61308057);山东省优秀青年科学家科学基金(BS2012DX003);山东省高等学校科技计划项目(J13LJ03)

摘　　要：设计了一种具有高负平坦色散特性的压缩型高双折射光子晶体光纤。为了获得高双折射特性,光纤包层采用压缩三角格子和椭圆空气孔的结构;为了提高控制色散的灵活性,在纤芯加入小的缺陷空气孔。基于超格子构造法,详细地模拟分析了光纤的双折射、色散特性。研究结果表明:在波长1.3~1.8μm的宽波段范围内,可获得高负平坦色散且色散值约为-667 ps·nm^(-1)·km^(-1),色散值在±7 ps·nm^(-1)·km^(-1)的范围内变化;双折射在波长研究范围内都实现了10^(-2)的高数量级,且在1.55μm处可达到2.21×10^(-2)。基于此种光纤的高负色散特性和高双折射在光传输系统及光纤传感有广泛应用。A squeezed high birefringence Photonic Crystal Fiber（PCF） with high negative flattened dispersion characteristics was proposed. In order to obtain the high birefringence characteristics, the cladding of PCF was made of squeezed triangular lattice and elliptical air holes. In order to improve the flexibility of controlling the dispersion, the core of PCF was added into a small defect air hole. The birefringence and dispersion characteristics were analyzed by super lattice method. The simulation results show that the designed PCF offers ultra flattened negative dispersion（-667 ±7 ps·nm^-1·km^-1） in a broad range of wavelengths from 1.3 μm to 1.8 μm, the birefringence can be reached the magnitude of 10^-2 and the high birefringence can be reached 2.21 ×10^-2at 1.55 μm. Based on the high negative dispersion and high birefringence characteristic, PCF will be widely used in optical transmission system and optical fiber sensing.

关 键 词：光子晶体光纤 高双折射 高负平坦色散 超格子构造法 

分 类 号：TN252[电子电信—物理电子学]