2~5 THz broadband high birefringence Terahertz photonic crystal fiber with porous core

Zhan-Qiang HUI; Tian-Tian ZHANG; Dong-Dong HAN; Feng ZHAO; Mei-Zhi ZHANG; Jia-Min GONG

doi:10.11972/j.issn.1001-9014.2021.05.007

Journals >Journal of Infrared and Millimeter Waves >Volume 40 >Issue 5 >Page 616 > Article

Journal of Infrared and Millimeter Waves
Vol. 40, Issue 5, 616 (2021)

2~5 THz broadband high birefringence Terahertz photonic crystal fiber with porous core

Zhan-Qiang HUI^*, Tian-Tian ZHANG, Dong-Dong HAN, Feng ZHAO, Mei-Zhi ZHANG, and Jia-Min GONG

Author Affiliations

College of Electronic Engineering，Xi’an University of Posts and Telecommunications，Xi’an，710121，China

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DOI: 10.11972/j.issn.1001-9014.2021.05.007 Cite this Article

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 Copy Citation Text

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Fig. 1. Cross-sectional view of proposed PCF（a）cladding region and（b）core region

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$The relationship between effective refractive index and wavelength of COC$

Fig. 2. The relationship between effective refractive index and wavelength of COC

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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

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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

Λ

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$Modal birefringence and effective refractive index of proposed THz PCF in the frequency range of 1.3~5 THz$

Fig. 5. Modal birefringence and effective refractive index of proposed THz PCF in the frequency range of 1.3~5 THz

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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，

Λ

=100 μm

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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，

Λ

=100 μm

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$Power fraction in air and material for the proposed THz PCF in the frequency range of 1.3~5 THz，while r=2 μm，L=14.5 μm，d=29 μm，R=49 μm，Λ=100 μm$

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，

Λ

=100 μm

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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，

Λ

=100 μm

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Fig. 10. The relationship between PMD and frequency

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来源	f（THz）	β₂（ps/THz/cm）	B	α_eff（cm^-1）	L_c（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
［30］	1.6	——	0.09	——	——	0.8~1.6 THz	kagome状包层沟槽芯
［19］	1	——	0.088	0.035	<0.1	0.8~1.5 THz	沟槽型纤芯
［19］	1.5	——	0.096	——	——	0.8~1.5 THz	沟槽型纤芯
［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
本文设计	3	±0.2	0.095 5	<1	10^-13	2~5 THz	级联六边形单元多孔纤芯

Table 1. Comparison with reported results

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