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

Zhuang Huo; Exian Liu; Jianjun Liu

doi:10.3788/COL202018.030603

Journals >Chinese Optics Letters >Volume 18 >Issue 3 >Page 030603 > Article

Chinese Optics Letters
Vol. 18, Issue 3, 030603 (2020)

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

Zhuang Huo, Exian Liu, and 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

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DOI: 10.3788/COL202018.030603 Cite this Article Set citation alerts

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 Copy Citation Text

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

Fig. 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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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	$1.345 \times 10^{- 2}$	$1.63 \times 10^{- 3}$

Table 1. Parameter Comparison of this HC-PQF with Previous Designs

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

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