波长在60～65μm范围内TIR-PPCF的太赫兹波传输特性  

Transmission Characteristics of TIR-PPCF for THz at Wavelength of 60～65 μm

作　　者：李孟洋[1] 孙文军[1] 孙京南 李娟[1] 支洪武[1] 

机构地区：[1]哈尔滨师范大学

出　　处：《哈尔滨师范大学自然科学学报》2011年第4期43-45,共3页Natural Science Journal of Harbin Normal University

基　　金：黑龙江省青年基金(QC06C043);哈尔滨青年基金(2006RFQXG055;08XYS-01);黑龙江省教育厅骨干教师项目(1251G031);哈尔滨师范大学预研项目(08XYS-01);黑龙江省研究生创新科研资金项目(YJSCX2011-414HLJ)

摘　　要：设计了基于全内反射的实芯塑料光子晶体光纤(TIR-PPCF),其晶格结构为三角形.利用时域有限差分法计算了TIR-PPCF在60～65μm(4.6～5 THz)波段的色散、损耗等特性.计算结果表明TIR-PPCF在波长60～65μm范围内可以实现THz波的低色散和低损耗的传输,且当占空比为0.5时,色散变化为0.12 ps/(km.nm),最小损耗值为1.1dB/km.该结构的TIR-PPCF相对于其他结构的THz波传输介质具有更平坦的色散特性和更低的损耗特性.研究结果对THz波光子晶体光纤的研究与应用提供了科学的借鉴.The TIR-PPCF with triangular crystal lattice structure based on Total Internal Reflection principle is designed.The dispersion loss performances and other characteristics of TIR-PPCF are analyzed by using the method of the FDTD for THz wave.Calculated results show that the TIR-PPCF can achieve low dispersion and low loss transmission performance for THz wave within the wavelength of 60～65 μm(4.6～5.0 THz).When the ratio of air hole diameter(d) to crystal lattice constants(Λ) is 0.5,the dispersion change is 0.12 ps/(km·nm),the minimum loss value is 1.1 dB/km.The designed TIR-PPCF exhibits more flat dispersion and more low loss compared with other transmission structures for THz wave.The researched results provide a scientific reference for THz wave's PCF investigation and application.

关 键 词：塑料光子晶体光纤 时域有限差分 色散 损耗 

分 类 号：TN2[电子电信—物理电子学]