Numerical analysis of thermally tunable liquid-crystal-filled terahertz fiber | |
Wang, Doudou1,2; Ma, Hongwei2; Wang, Lili3; Li, Baihong1; Yang, Jing1 | |
2017 | |
会议名称 | 2nd International Conference on Photonics and Optical Engineering |
会议录名称 | Second International Conference on Photonics and Optical Engineering |
卷号 | 10256 |
会议日期 | 2016-10-14 |
会议地点 | Xi'an, China |
出版者 | SPIE |
产权排序 | 3 |
摘要 | A liquid-crystal-filled polymer photonic crystal fiber is designed and numerically analysised for terahertz wave guiding. Bandgap-guiding terahertz fiber is obtained by infiltrating the cladding air holes of index guiding Topas photonic crystal fiber with liquid crystal 5CB. Structural parameter dependence and thermal tunability of the photonic bandgaps, mode properties and confinement losses of the designed fiber are investigated by using the finite element method. The bandgaps are formed based on antiresonances of the individual liquid crystal inclusions, so the positions of bandgaps depend strongly on the cladding hole diameter and weakly on the lattice constant. Bandgaps and the positions of the confinement loss minimum or peaks of the transmission spectra shift toward lower frequency as temperature increased from 25 °C to 34 °C due to the positive dno/dT of 5CB. Average thermal tuning sensitivity of -30 GHz/°C is achieved for the designed fiber. At the central frequency of the transmission band, high power transmission coefficient and thus low splicing loss between the aligned liquid-crystal-filled polymer photonic crystal fiber and the unfilled section is obtained. Our results provide theoretical references for applications of liquid-crystal photonic crystal fiber in sensing and tunable fiber-optic devices in terahertz frequencies. © 2017 SPIE. |
作者部门 | 信息光子学研究室 |
DOI | 10.1117/12.2257112 |
收录类别 | EI ; ISTP |
语种 | 英语 |
ISSN号 | 0277786X |
引用统计 | |
文献类型 | 会议论文 |
条目标识符 | http://ir.opt.ac.cn/handle/181661/28858 |
专题 | 信息光子学研究室 |
作者单位 | 1.College of Sciences, Xi'an University of Science and Technology, Xi'an; 710054, China 2.College of Mechanical Engineering, Xi'an University of Science and Technology, Xi'an; 710054, China 3.State Key Laboratory of Transient Optics and Photonics, Xi'an Institute of Optics and Precision Mechanics, Chinese Academy of Sciences, Xi'an; 710119, China |
推荐引用方式 GB/T 7714 | Wang, Doudou,Ma, Hongwei,Wang, Lili,et al. Numerical analysis of thermally tunable liquid-crystal-filled terahertz fiber[C]:SPIE,2017. |
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