低损宽频高双折射太赫兹光子带隙光纤  

A broadband low loss and high birefringence terahertz photonic bandgap photonic crystal fiber

作　　者：白晋军[1] 王昌辉[1] 霍丙忠[1] 王湘晖[1] 常胜江[1] 

机构地区：[1]南开大学,现代光学研究所,天津300071

出　　处：《物理学报》2011年第9期783-787,共5页Acta Physica Sinica

基　　金：国家重点基础研究发展计划(973)(批准号:2007CB310403);国家自然科学基金(批准号:60772105);天津市自然科学基金重点项目(批准号:10JCZDJC15200);教育部博士点基金(批准号:20090031110033)资助的课题~~

摘　　要：设计了一种低损耗、宽频段、高双折射太赫兹光子带隙光纤,呈三角晶格排列的亚波长空气孔包层实现了带隙的局域作用.利用全矢量有限元法对光纤的双折射及损耗特性进行了理论分析.结果表明,在大约0.3THz的宽频范围内,类矩形纤芯太赫兹光子带隙光纤的损耗小于0.009cm-1,相双折射在10-3数量级,群双折射可达10-2数量级.A low loss and broadband photonic bandgap （PBG） terahertz photonic crystal fiber （PCF） with high birefingence is proposed. Terahertz wave is confined within the core surrounded by the cladding with triangular lattice arrangement of subwavelength air holes. The birefringence and the loss of the fiber are investigated by using a full-vectorial finite element method. The numercal simulation shows that within a broadband area of about 0.3THz, the loss of the near-rectangle core THz PBG photonic crystal fiber is less than 0.009cm-1, the phase birefringence is on the order of 10-3, and the group birefringence even can reach 10-2.

关 键 词：太赫兹 太赫兹波导 光子晶体光纤 双折射 

分 类 号：TN253[电子电信—物理电子学]