Journal of Infrared and Millimeter Waves, Volume. 40, Issue 5, 616(2021)
2~5 THz broadband high birefringence Terahertz photonic crystal fiber with porous core
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Fig. 1. Cross-sectional view of proposed PCF（a）cladding region and（b）core region
Fig. 2. The relationship between effective refractive index and wavelength of COC
Fig. 3. Mode field distribution of x-polarization and y-polarization（a）TE f=1.3 THz（b）TM f=1.3 THz（c）TE f=3 THz（d）TM f=3 THz（e）TE f=3.5 THz（f）TM f=3.5 THz（g）TE f=5 THz（h）TM f=5 THz
Fig. 4. The influence of PCF structural parameters on birefringence（a）different radius r of small air holes，（b）different distances L between two adjacent small air holes，（c）different distances d between two adjacent hexagonal elements，（d）different air hole radius R，（e）different air hole spacing
Fig. 5. Modal birefringence and effective refractive index of proposed THz PCF in the frequency range of 1.3~5 THz
Fig. 6. Confinement loss for the proposed THz PCF in the frequency range of 1.3-5 THz，while r=2 μm，L=14.5 μm，d=29 μm，R=49 μm，
Fig. 7. Effective absorption loss for the proposed THz PCF in the frequency range of 2~4.5 THz，while r=2 μm，L=14.5 μm，d=29 μm，R=49 μm，
Fig. 8. Power fraction in air and material for the proposed THz PCF in the frequency range of 1.3~5 THz，while r=2 μm，L=14.5 μm，d=29 μm，R=49 μm，
Fig. 9. Waveguide dispersion for the proposed THz PCF in the frequency range of 1.3~5 THz，while r=2 μm，L=14.5 μm，d=29 μm，R=49 μm，
Table 1. Comparison with reported results
View tableView in ArticleTable 1. Comparison with reported results
来源 f（THz） β2（ps/THz/cm） B αeff（cm-1） Lc（cm-1） 研究范围 光纤结构 ［ 30 ］1 —— 0.082 2 0.05 4.13×10-5 0.8~1.6 THz kagome状包层沟槽芯 1.6 —— 0.09 —— —— ［ 19 ］1 —— 0.088 0.035 <0.1 0.8~1.5 THz 沟槽型纤芯 1.5 —— 0.096 —— —— ［ 29 ］1 —— 0.097 3 0.056 2.29×10-5 0.7~1.7 THz Kagome包层椭圆槽芯型 ［ 23 ］1.1 —— 0.086 0.065 3.8×10-9 0.5~1.8 THz 椭圆空气孔纤芯 ［ 36 ］1 0.53±0.07 0.086 0.05 10-9 0.5~1.48 THz 渐变椭圆芯型 ［ 39 ］1.3 —— 0.08 0.03 —— 0.6~2 THz 椭圆芯型 ［ 27 ］2.1 —— 0.034 —— —— 2~4 THz 六角晶格包层双孔芯 ［ 37 ］3 0.2-1 0.03 0.6 4.34×10-4 2~4 THz 双孔单元纤芯 ［ 38 ］3.5 <0.7 0.033 0.7 —— 2~4 THz 三孔芯单元纤芯 本文设计 3.5 ±0.2 0.096 5 <1 10-12 2~5 THz 级联六边形单元多孔纤芯 3 ±0.2 0.095 5 <1 10-13
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Zhan-Qiang HUI, Tian-Tian ZHANG, Dong-Dong HAN, Feng ZHAO, Mei-Zhi ZHANG, Jia-Min GONG. 2~5 THz broadband high birefringence Terahertz photonic crystal fiber with porous core[J]. Journal of Infrared and Millimeter Waves, 2021, 40(5): 616
Paper Information
Category: Research Articles
Received: Aug. 15, 2020
Accepted: --
Published Online: Sep. 29, 2021
The Author Email: Zhan-Qiang HUI (zhanqianghui@xupt.edu.cn)
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