基于波前校正的轨道角动量复用通信系统抗干扰研究

doi:10.11959/j.issn.1000-436x.2015264

Abstract

Abstract:

It was shown that the quality of free-space optical communication system using OAM(orbital angular momentum)multiplexing was inevitably degraded by AT(atmospheric turbulence).A wavefront phase correction based on Gerchberg-Saxton algorithm to mitigate the wave front phase distortion of the OAM-multiplexed system transmitting through AT was proposed.The simulation results show that the crosstalk caused by AT decreases by using the proposed scheme.When the refractive index structure constant of AT $C_{n}^{2}$ is lower than $2 ＆#x00D7; 10^{＆#x2212; 15} m^{＆#x2212; \frac{2}{3}}$ ,the BER(bit error rate)performance is decreased by two or three orders of magnitude with the proposed scheme.

Key words: optical communication, orbital-angular-momentum-multiplexed, atmospheric turbulence, Gerchberg-Saxton algorithm, phase correction

Li ZOU,Le WANG,Shi-bing ZHANG,Sheng-mei ZHAO. Compensation of orbital-angular-momentum multiplexed communication system with wavefront correction[J]. Journal on Communications, 2015, 36(10): 76-84.

Figures/Tables 6

References 30

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