Design of Three Vortex Photonic Crystal Fibers

Wei, 魏巍 Wei; Zhang, 张羚翔 Lingxiang; Zhang, 张志明 Zhiming; Tang, 唐莉勤 Liqin; Ding, 丁镭 Lei; Li, 李乙钢 Yigang

doi:10.3788/aos201939.0906006

Cited by 3 publications

(2 citation statements)

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“…Confinement loss of the PCF is due to the existence and limited number of the air holes in the cladding. It is a unique loss of the PCF [1], which leads to the loss of light in the transmission. When the sizes and arrangements of the air holes are different, the ability to restrict light of the cladding is also different, and the confinement loss of the PCF will be different.…”

Section: Confinement Lossmentioning

confidence: 99%

“…Orbital angular momentum (OAM) is a new degree of freedom in addition to light intensity phase, frequency, and polarization [1], which can theoretically take an infinite number of mutually orthogonal modes and have an infinite number of topological charges. OAM beams can carry both spin and OAM due to discrete states in circular polarization and helical phase exp (±ilθ) (where l represents the topological charge and θ is the azimuth angle).…”

Section: Introductionmentioning

confidence: 99%

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Design of photonic crystal fiber for long-distance transmission of orbital angular momentum

Zhao¹,

Liang²,

Zhi-niu³

et al. 2021

Laser Phys.

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In this paper, a new photonic crystal fiber (PCF) for long-distance transmission of orbital angular momentum (OAM) is proposed. The rectangular air holes are distributed in the cladding and a circular air hole is distributed in the core. The designed PCF can support 88 OAM modes over S + C + L + U wavelength band. The characteristics of the PCF are analyzed by using the finite element method systematically. The results show that the nonlinear coefficient is lower than 2.8 km−1·W−1 over S + C + L + U wavelength band, and the minimum value is as low as 0.9 km−1·W−1. The confinement loss of each mode is between 10−17–10−10 dB·m−1, and the stable transmission distance of the OAM modes is up to 60 km. Additionally, the effective mode filed area and dispersion of the PCF are also analyzed. In general, the PCF can be used in modular division multiplexing which can effectively improve the capacity and transmission distance of communication system.

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Section: Confinement Lossmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Design of photonic crystal fiber for long-distance transmission of orbital angular momentum

Zhao¹,

Liang²,

Zhi-niu³

et al. 2021

Laser Phys.

View full text Add to dashboard Cite

show abstract

OAM Beams Generation Technology in Optical Fiber: A Review

Lian

Han

et al. 2022

IEEE Sensors J.

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Design of PCF Supporting 86 OAM Modes with High Mode Quality and Low Nonlinear Coefficient

Lian

et al. 2022

Photonics

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A unique photonic crystal fiber with square and circular air holes (SC-PCF) is designed in this research. Three layers of circular air holes and two levels of square air holes make up the fiber cladding. The finite element approach is used to simulate the fiber construction, and numerical calculations are used to examine the transmission properties in the S+C+L band. The results reveal that the SC-PCF can sustain 86 Orbital Angular Momentum (OAM) modes in the wavelength range of 1400 nm to 1700 nm (300 nm), with an effective refractive index difference (ERID) of 5.88 × 10−3 between them, thus avoiding mode coupling. The mode purity of all modes is greater than 96% at 1550 nm, and the lowest dispersion and dispersion change are 4.939 ps/nm/km and 0.956 ps/nm/km, respectively. The confinement loss (CL) of all modes is lower than 10−9 dB/m, and the nonlinear coefficient (NC) is lower than 1.5 W−1·km−1 in the whole band. The proposed SC-PCF has important value in long-distance and large-capacity communication systems.

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Design of Three Vortex Photonic Crystal Fibers

Cited by 3 publications

References 0 publications

Design of photonic crystal fiber for long-distance transmission of orbital angular momentum

Design of photonic crystal fiber for long-distance transmission of orbital angular momentum

OAM Beams Generation Technology in Optical Fiber: A Review

Design of PCF Supporting 86 OAM Modes with High Mode Quality and Low Nonlinear Coefficient

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