摘要
设计了一种具有高双折射和高负色散特性的光子晶体光纤。在包层中,采用压缩三角格子和两种不同大小椭圆空气孔。基于超格子构造法,研究了光子晶体光纤的结构参数对双折射特性和色散特性的影响。数值研究结果表明:双折射在1.1~1.9μm的宽波段范围内达到10^(-2)的高数量级,色散在1.4~1.8μm的宽波段范围内实现了高负色散,而且在传输窗口波长1.55μm处,双折射可达到3.4×10^(-2),x-和y-偏振基模色散分别为-127 ps/(nm·km)和-428 ps/(nm·km)。此外,双折射、色散和有效面积特性随光子晶体光纤结构的变化也进行了详细的研究。基于其高双折射和高负色散特性,此种光纤可以广泛用于色散补偿光纤和偏振依赖型通讯系统。
A high birefringence and high negative dispersion photonic crystal fiber（PCF） was investigated, which adopted both squeezed triangular lattice and two kinds of elliptical air holes in the cladding. The supercell lattice method was used to investigate the influence of the fiber parameters on the birefringence and dispersion properties. The simulation results show that the birefringence can reach the magnitude of 10^-2 in a broad range of wavelengths from 1.1 μm to 1.9 μm, and the dispersion can achieve high negative dispersion in a broad range of wavelengths form 1.4 μm to 1.8 μm. This PCF also has high birefringence（3.4 ×10^-2 at 1.55 μm）, high negative dispersion（-428.2 ps/（nm·km）and-126.9 ps/（nm·km） and in y- and x- polarizations at 1.55 μm, respectively）. Moreover, the effective area was also discussed. This PCF can be widely used as dispersion compensation PCF and polarization dependent communication system.
出处
《红外与激光工程》
EI
CSCD
北大核心
2015年第B12期173-177,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)
关键词
光子晶体光纤
高双折射
高负色散
超格子构造法
photonic crystal fiber
high birefringence
negative dispersion
squeezed lattice method
