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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
DOI10.1117/12.2257112
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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