Hollow-core photonic quasicrystal fiber with high birefringence and ultra-low nonlinearity

Zhuang Huo; Exian Liu; Jianjun Liu

doi:doi:10.3788/COL202018.030603

Chinese Optics Letters, 2020, 18 (3): 030603, Published Online: Mar. 11, 2020

Hollow-core photonic quasicrystal fiber with high birefringence and ultra-low nonlinearity Download： 759次

Zhuang Huo Exian Liu Jianjun Liu ^*

Author Affiliations

Key Laboratory for Micro/Nano Optoelectronic Devices of Ministry of Education & Hunan Provincial Key Laboratory of Low-Dimensional Structural Physics and Devices, School of Physics and Electronics, Hunan University, Changsha 410082, China

Figures & Tables

Fig. 1. (a) Cross section structure of the six-fold photonic quasicrystal (the origin $O$ of the coordinate system OXY is set at the center of the fiber core); (b) the cross section structure of HC-PQF.

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Fig. 2. Mode field distribution of HC-PQF: (a) direction of X polarization; (b) direction of Y polarization; (c) the effective refractive index of the X and Y polarization modes, and the corresponding birefringence.

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Fig. 3. Birefringence of HC-PQF under different $d_{1}$ values filled with air.

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Fig. 4. When $d_{1} = 2.17 μ m$ , the effect of filling ratio on birefringence.

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Fig. 5. When $d / Λ = 0.910$ and $d_{1} = 2.17 μ m$ , the effect of changing the distance $r$ between the $d_{2}$ small air hole and the fiber core on birefringence.

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Fig. 6. $d / Λ = 0.910$ , $d_{1} = 2.17 μ m$ , $r = 1.50 Λ$ , changing the core filling gas: (a) the relationship between mode field area and wavelength, (b) the relationship between nonlinear coefficient and wavelength.

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Fig. 7. Influence of the diameter of the hollow core on dispersion characteristics with $d / Λ = 0.91$ and $r = 1.50 Λ$ .

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Table1. Parameter Comparison of this HC-PQF with Previous Designs

PCF structure	Ref.	Birefringence	Nonlinear coefficient (W^-1·km^-1)
PC-PCF	[34]	0.005	/
HC-PCF	[35]	$5.8 \times 10^{- 3}$	/
SGNLC-PCF	[36]	0.042	425.5
Proposed HC-PQF	This work	$1.345 \times 10^{- 2}$	$1.63 \times 10^{- 3}$

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Zhuang Huo, Exian Liu, Jianjun Liu. Hollow-core photonic quasicrystal fiber with high birefringence and ultra-low nonlinearity[J]. Chinese Optics Letters, 2020, 18(3): 030603.

Hollow-core photonic quasicrystal fiber with high birefringence and ultra-low nonlinearity Download： 759次

Fig. 1. (a) Cross section structure of the six-fold photonic quasicrystal (the origin $O$ of the coordinate system OXY is set at the center of the fiber core); (b) the cross section structure of HC-PQF.

Fig. 2. Mode field distribution of HC-PQF: (a) direction of X polarization; (b) direction of Y polarization; (c) the effective refractive index of the X and Y polarization modes, and the corresponding birefringence.

Fig. 3. Birefringence of HC-PQF under different $d_{1}$ values filled with air.

Fig. 4. When $d_{1} = 2.17 μ m$ , the effect of filling ratio on birefringence.

Fig. 5. When $d / Λ = 0.910$ and $d_{1} = 2.17 μ m$ , the effect of changing the distance $r$ between the $d_{2}$ small air hole and the fiber core on birefringence.

Fig. 6. $d / Λ = 0.910$ , $d_{1} = 2.17 μ m$ , $r = 1.50 Λ$ , changing the core filling gas: (a) the relationship between mode field area and wavelength, (b) the relationship between nonlinear coefficient and wavelength.

Fig. 7. Influence of the diameter of the hollow core on dispersion characteristics with $d / Λ = 0.91$ and $r = 1.50 Λ$ .

Table1. Parameter Comparison of this HC-PQF with Previous Designs

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Hollow-core photonic quasicrystal fiber with high birefringence and ultra-low nonlinearity Download： 759次

Fig. 1. (a) Cross section structure of the six-fold photonic quasicrystal (the origin O of the coordinate system OXY is set at the center of the fiber core); (b) the cross section structure of HC-PQF.

Fig. 2. Mode field distribution of HC-PQF: (a) direction of X polarization; (b) direction of Y polarization; (c) the effective refractive index of the X and Y polarization modes, and the corresponding birefringence.

Fig. 3. Birefringence of HC-PQF under different d1 values filled with air.

Fig. 4. When d1=2.17 μm, the effect of filling ratio on birefringence.

Fig. 5. When d/Λ=0.910 and d1=2.17 μm, the effect of changing the distance r between the d2 small air hole and the fiber core on birefringence.

Fig. 6. d/Λ=0.910, d1=2.17 μm, r=1.50Λ, changing the core filling gas: (a) the relationship between mode field area and wavelength, (b) the relationship between nonlinear coefficient and wavelength.

Fig. 7. Influence of the diameter of the hollow core on dispersion characteristics with d/Λ=0.91 and r=1.50Λ.

Table1. Parameter Comparison of this HC-PQF with Previous Designs

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Fig. 1. (a) Cross section structure of the six-fold photonic quasicrystal (the origin $O$ of the coordinate system OXY is set at the center of the fiber core); (b) the cross section structure of HC-PQF.

Fig. 3. Birefringence of HC-PQF under different $d_{1}$ values filled with air.

Fig. 4. When $d_{1} = 2.17 μ m$ , the effect of filling ratio on birefringence.

Fig. 5. When $d / Λ = 0.910$ and $d_{1} = 2.17 μ m$ , the effect of changing the distance $r$ between the $d_{2}$ small air hole and the fiber core on birefringence.

Fig. 6. $d / Λ = 0.910$ , $d_{1} = 2.17 μ m$ , $r = 1.50 Λ$ , changing the core filling gas: (a) the relationship between mode field area and wavelength, (b) the relationship between nonlinear coefficient and wavelength.

Fig. 7. Influence of the diameter of the hollow core on dispersion characteristics with $d / Λ = 0.91$ and $r = 1.50 Λ$ .