Zhang Yalin, Ma Donglin, Zhou Zeyu, Yuan Xiuhua
Appl Opt. 2017 Apr 1;56(10):2922-2926. doi: 10.1364/AO.56.002922.
In this paper, the aperture averaged scintillation, mean signal-to-noise ratio (SNR), and average bit error rate (BER) for the partially coherent flat-topped vortex hollow beams propagating in turbulent atmosphere are evaluated. The variation of the aperture averaged scintillation against the coherence length of the beams and size of the receiver aperture is studied. It is also found that the aperture averaged scintillation increases with the topological charge of the partially coherent flat-topped vortex hollow beams. The partially coherent flat-topped vortex hollow beam with the smaller beam order has advantage to resist the effect of the turbulence. We also investigated the variation of the mean SNR and average BER against the coherence length.
本文评估了部分相干平顶涡旋空心光束在湍流大气中传输时的孔径平均闪烁、平均信噪比（SNR）和平均误码率（BER）。研究了孔径平均闪烁随光束相干长度和接收孔径尺寸的变化。还发现孔径平均闪烁随部分相干平顶涡旋空心光束的拓扑电荷数增加而增大。光束阶数较小的部分相干平顶涡旋空心光束在抵抗湍流影响方面具有优势。我们还研究了平均信噪比和平均误码率随相干长度的变化。
