High-accuracy mode recognition method in orbital angular momentum optical communication system

Lin Zhao; Yuan Hao; Li Chen; Wenyi Liu; Meng Jin; Yi Wu; Jiamin Tao; Kaiqian Jie; Hongzhan Liu

doi:10.3788/COL202220.020601

[1] Y. Shen, X. Wang, Z. Xie, C. Min, Q. Liu, M. Gong, X. Yuan. Optical vortices 30 years on: OAM manipulation from topological charge to multiple singularities. Light Sci. Appl., 8, 90(2019).

[2] L. Allen, M. W. Beijersbergen, R. Spreeuw, R. J. C. Spreeuw, J. P. Woerdman. Orbital angular momentum of light and the transformation of Laguerre–Gaussian laser modes. Phys. Rev. A, 45, 8185(1992).

[3] L. Chen, R. K. Singh, A. Dogariu, Z. Chen, J. Pu. Estimating topological charge of propagating vortex from single-shot non-imaged speckle. Chin. Opt. Lett., 19, 022603(2021).

[4] Y. Shen, Z. Shen, G. Zhao, W. Hu. Photopatterned liquid crystal mediated terahertz Bessel vortex beam generator. Chin. Opt. Lett., 18, 080003(2020).

[5] A. E. Willner, H. Huang, Y. Yan, Y. Ren, N. Ahmed, G. Xie, C. Bao, L. Li, Y. Cao, Z. Zhao, J. Wang, M. Lavery, M. Tur, S. Ramachandran, A. Molisch, N. Ashrafi, S. Ashrafi. Optical communications using orbital angular momentum beams. Adv. Opt. Photon., 7, 66(2015).

[6] J. Wang, J. Yang, I. Fazal, N. Ahmed, Y. Yan, H. Huang, Y. Ren, Y. Yue, S. Dolinar, M. Tur, A. E. Willner. Terabit free-space data transmission employing orbital angular momentum multiplexing. Nat. Photon., 6, 488(2012).

[7] L. Zhao, T. Jiang, M. Mao, Y. Zhang, H. Liu, Z. Wei, D. Deng, A. Luo. Improve the capacity of data transmission in orbital angular momentum multiplexing by adjusting link structure. IEEE Photon. J., 12, 5501111(2020).

[8] J. Wang, S. Li, M. Luo, J. Liu, L. Zhu, C. Li, D. Xie, Q. Yang, S. Yu, J. Sun, X. Zhang, W. Shieh, A. WillnerEuropean Conference on Optical Communication (ECOC). N-dimentional multiplexing link with 1.036-Pbit/s transmission capacity and 112.6-bit/s/Hz spectral efficiency using OFDM- 8QAM signals over 368 WDM pol-muxed 26 OAM modes(2014).

[9] Q. Tian, L. Zhu, Y. Wang, Q. Zhang, B. Liu, X. Xin. The propagation properties of a longitudinal orbital angular momentum multiplexing system in atmospheric turbulence. IEEE Photon. J., 10, 7900416(2018).

[10] L. Chen, W. Zhang, Q. Lu, X. Lin. Making and identifying optical superposition of very high orbital angular momenta. Phys. Rev. A, 88, 4019(2013).

[11] D. Zibar, M. Piels, R. Jones, C. G. Schaeffer. Machine learning techniques in optical communication. J. Lightwave Technol., 34, 1442(2016).

[12] T. Doster, A. T. Watnik. Machine learning approach to OAM beam demultiplexing via convolutional neural networks. Appl. Opt., 56, 3386(2017).

[13] M. I. Dedo, Z. Wang, K. Guo, Z. Guo. OAM mode recognition based on joint scheme of combining the Gerchberg–Saxton (GS) algorithm and convolutional neural network (CNN). Opt. Commun., 456, 124696(2020).

[14] P. Li, B. Wang, X. Song, X. Zhang. Non-destructive identification of twisted light. Opt. Lett., 41, 1574(2016).

[15] S. Zhao, J. Leach, L. Gong, J. Ding, B. Zheng. Aberration corrections for free-space optical communications in atmosphere turbulence using orbital angular momentum states. Opt. Express, 20, 452(2012).

[16] J. Vickers, M. J. Burch, R. Vyas, S. Singh. Phase and interference properties of optical vortex beams. J. Opt. Soc. Am. A, 25, 823(2008).

[17] T. Doster, A. T. Watnik. Laguerre–Gauss and Bessel–Gauss beams propagation through turbulence: analysis of channel efficiency. Appl. Opt., 55, 10239(2016).

[18] L. C. Andrews, R. L. Phillips. Laser Beam Propagation through Random Media(2005).

Data from CrossRef