空芯光子晶体光纤的纤芯设计及特性研究

为了研究纤芯形状和大小对光纤特性的影响,设计了2种纤芯形状的7芯空芯光子晶体光纤(HC-PCFs),并与传统的十二边形纤芯的HC-PCFs进行了对比.运用有限元法进行仿真计算,结果表明:内凹圆化型纤芯的HCPCF比普通十二边形的HC-PCF具有更低的泄漏损耗和波导色散,而内凹直线型纤芯的HC-PCF具有特别的波导色散特性,新设计的纤芯结构未来可用于大容量光通信、光孤子传输以及色散补偿中.

Fiber Core Design and Property Research of Hollow-core Photonic Crystal Fibers

To study the effect of fiber core structure on properties of hollow-core photonic crystal fibers ( HC-PCFs), 7-cell HC-PCFs with two types of fiber core shape were designed and compared to the traditional dodecagon HC-PCFs. The finite element method ( FEM) was adopted to simulate them. The results show that the concave round type has lower leakage loss and waveguide dispersion than that of dodecagon type, and concave rectilinear type has a special waveguide dispersion characteristic, the new designs of the fiber core structure can be used for large capacity optical communication, optical soliton transmission and dispersion compensation in the future.