• Optoelectronics Letters
  • Vol. 16, Issue 1, 34 (2020)
Wei HUANG1, Yong YOU1、2、*, Bin-bin SONG1, and Sheng-yong CHEN1
Author Affiliations
  • 1Key Laboratory of Computer Vision and Systems (Ministry of Education), School of Computer Science and Engineering, Tianjin University of Technology, Tianjin 300384, China
  • 2Institute of Modern Optics, Nankai University, Tianjin 300350, China
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    Abstract

    This paper proposes a novel photonic crystal optical fiber which can support 30 orbital angular momentum (OAM) modes transmission and possesses relatively flat and low dispersion. The OAM modes can be well-separated due to the large effective refractive index difference (above 10-4) between the eigenmodes. The only material of the designed fiber is silica. The dispersion of each OAM mode is controlled in the range of 50—100 ps·nm-1·km-1 and the total dispersion variation is below 10 ps·nm-1·km-1 from 1 500 nm to 1 600 nm. Moreover, the confinement loss of each OAM mode is below 8.17×10-10 dB/m at 1 550 nm, and the nonlinear coefficients is less than 0.71 W-1/km for all modes at 1 550 nm. With all these good features, this proposed optical fiber is promising to be applied in fiberbased OAM communication systems.
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    HUANG Wei, YOU Yong, SONG Bin-bin, CHEN Sheng-yong. A photonic crystal fiber for supporting 30 orbital angular momentum modes with low dispersion[J]. Optoelectronics Letters, 2020, 16(1): 34
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    Received: May. 6, 2019
    Accepted: Jul. 4, 2019
    Posted: Jan. 1, 2020
    Published Online: Dec. 25, 2020
    The Author Email: Yong YOU (youyongmail@163.com)