HUANG Wei,YOUYong,SONGBin-bin,CHENSheng-yong.A photonic crystal fiber for supporting 30 orbital angular momentum modes with low dispersion[J].Optoelectronics Letters,2020,16(1):34-39 A photonic crystal fiber for supporting 30 orbital angular momentum modes with low dispersion Author Name Affiliation HUANG Wei  Key Laboratory of Computer Vision and Systems Ministry of Education, School of Computer Science and Engineering, Tianjin University of Technology, Tianjin 300384, China  YOUYong  Key Laboratory of Computer Vision and Systems Ministry of Education, School of Computer Science and Engineering, Tianjin University of Technology, Tianjin 300384, China  SONGBin-bin  Key Laboratory of Computer Vision and Systems Ministry of Education, School of Computer Science and Engineering, Tianjin University of Technology, Tianjin 300384, China  CHENSheng-yong  Key Laboratory of Computer Vision and Systems Ministry of Education, School of Computer Science and Engineering, Tianjin University of Technology, Tianjin 300384, China  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 fiber-based OAM communication systems. Hits: 873 Download times: 0 View Full Text    Download reader