Circular photonic crystal fiber supporting orbital angular momentum modes transmission

Bai Xiuli; Chen Heming; Zhang Lingfei

doi:10.3788/IRLA201948.0222002

A new type of circular photonic crystal fiber supporting orbital angular momentum was proposed. The designed circular photonic crystal fiber is composed of well-ordered rectangular air hole rings in the cladding, a large air-core in the center and the annular high-index region for orbital angular momentum modes transmission. Utilizing the COMSOL Multiphysics software based on the finite element method, propagation properties of orbital angular momentum modes in fibers were discussed in detail. The results show that the designed circular photonic crystal fiber realizes effective segregation and stable transmission of 50 orbital angular momentum modes over the bandwidth from 1.2 m to 2.0 m. Large effective index differences(10-4) guarantee the stable transmission of every mode, confinement losses are lower than 10-9 dBm-1, and nonlinear coefficients are as low as 0.833 km-1W-1. The proposed rectangular holes circular photonic crystal fiber applied in mode-division multiplexing fiber communication systems might greatly improve channel capacity and spectral efficiency.

Circular photonic crystal fiber supporting orbital angular momentum modes transmission

1. College of Electronic and Optical Engineering,Nanjing University of Posts and Telecommunications,Nanjing 210023,China;

2. School of Electronic Engineering,Nanjing Xiao Zhuang University,Nanjing 211171,China

Received Date: 2018-09-05

Rev Recd Date: 2018-10-03

Publish Date: 2019-02-25

Key words:

Abstract: A new type of circular photonic crystal fiber supporting orbital angular momentum was proposed. The designed circular photonic crystal fiber is composed of well-ordered rectangular air hole rings in the cladding, a large air-core in the center and the annular high-index region for orbital angular momentum modes transmission. Utilizing the COMSOL Multiphysics software based on the finite element method, propagation properties of orbital angular momentum modes in fibers were discussed in detail. The results show that the designed circular photonic crystal fiber realizes effective segregation and stable transmission of 50 orbital angular momentum modes over the bandwidth from 1.2 m to 2.0 m. Large effective index differences(10-4) guarantee the stable transmission of every mode, confinement losses are lower than 10-9 dBm-1, and nonlinear coefficients are as low as 0.833 km-1W-1. The proposed rectangular holes circular photonic crystal fiber applied in mode-division multiplexing fiber communication systems might greatly improve channel capacity and spectral efficiency.

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Reference (19)

[1]	Yao A M, Padgett M J. Orbital angular momentum:origins, behavior and applications[J]. Advances in Optics Photonics, 2011, 3(2):161-204.
[2]	Gao Chunqing, Zhang Shikun, Fu Shiyao, et al. Adaptive optics wavefront correction techniques of vortex beams[J]. Infrared and Laser Engineering, 2017, 46(2):0201001. (in Chinese)
[3]	Bozinovic N, Ramachandran S. Terabit-scale orbital angular momentum mode division multiplexing in fibers[J]. Science, 2013, 340(6140):1545-1548.
[4]	Bu Jing, Zhang Lichao, Dou Xiujie, et al. Generation and application of optical vortices with arbitrary topological charges[J]. Infrared and Laser Engineering, 2017, 46(6):0634001. (in Chinese)
[5]	Gregg P, Kristensen P, Golowich S E, et al. Stable transmission of 12 OAM states in air-core fiber[C]//CLEO, 2013:CTu2K.2.
[6]	Ung B, Vaity P, Wang L, et al. Few-mode fiber with inverse-parabolic graded-index profile for transmission of OAM-carrying modes[J]. Optics Express, 2014, 22(15):18044-18055.
[7]	Brunet C, Ung B, Messaddeq Y, et al. Design of an optical fiber supporting 16 OAM modes[C]//OFC, 2014:TH2A.24.
[8]	Yue Y, Zhang L, Yan Y, et al. Octave-spanning supercontinuum generation of vortices in an As2S3 ring photonic crystal fiber[J]. Optics Letters, 2012, 37(11):1889-1891.
[9]	Wong G K, Kang M S, Lee H W, et al. Excitation of orbital angular momentum resonances in helically twisted photonic crystal fiber[J]. Science, 2012, 337(6093):446.
[10]	Zhang Lingxiang, Wei Wei, Zhang Zhiming, et al. Propagation properties of vortex beams in a ring photonic crystal fiber[J]. Acta Physica Sinica, 2017, 66(1):14205. (in Chinese)
[11]	Hu Z A, Huang Y Q, Luo A P, et al. Photonic crystal fiber for supporting 26 orbital angular momentum modes[J]. Optics Express, 2016, 4(15):17285-17291.
[12]	Tian W, Zhang H, Zhang X, et al. A circular photonic crystal fiber supporting 26 OAM modes[J]. Optical Fiber Technology, 2016, 30:184-189.
[13]	Lou Yan, Chen Chunyi, Zhao Yiwu, et al. Characteristics of Gaussian vortex beam in atmospheric turbulence transmission[J]. Chinese Optics, 2017, 10(6):768-776. (in Chinese)
[14]	Ramachandran S, Kristensen P, Yan M F. Generation and propagation of radially polarized beams in optical fibers[J]. Optics Letters, 2009, 34(16):2525-2527.
[15]	Brunet C, Vaity P, Messaddeq Y, et al. Design, fabrication and validation of an OAM fiber supporting 36 states[J]. Optics Express, 2014, 22(21):26117-26127.
[16]	Maji P S, Chaudhuri P R. Circular photonic crystal fibers:numerical analysis of chromatic dispersion and losses[J]. Isrn Optics, 2013, 2013(4):1-9.
[17]	Saitoh K, Florous N, Koshiba M. Ultra-flattened chromatic dispersion controllability using a defected-core photonic crystal fiber with low confinement losses[J]. Optics Express, 2005, 13(21):8365-8371.
[18]	Inci H D, Ozsoy S. Birefringence, dispersion and loss properties for PCFs with rectangular air-holes[J]. Infrared Physics Technology, 2014, 67:354-358.
[19]	Jiang G, Fu Y, Huang Y. High birefringence rectangular-hole photonic crystal fiber[J]. Optical Fiber Technology, 2015, 26:163-171.

Circular photonic crystal fiber supporting orbital angular momentum modes transmission

doi: 10.3788/IRLA201948.0222002

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