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Coherent free space optics communications over the maritime atmosphere with use of adaptive optics for beam wavefront correction

机译:利用自适应光学器件进行光束波前校正,在海洋大气上进行相干自由空间光学通信

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We evaluate the performance of the coherent free space optics (FSO) employing quadrature array phase-shift keying (QPSK) modulation over the maritime atmosphere with atmospheric turbulence compensated by use of adaptive optics (AO). We have established a comprehensive FSO channel model for maritime conditions and also made a comprehensive comparison of performance between the maritime and terrestrial atmospheric links. The FSO links are modeled based on the intensity attenuation resulting from scattering and absorption effects, the log-amplitude fluctuations, and the phase distortions induced by turbulence. The obtained results show that the FSO system performance measured by the bit-error-rate (BER) can be significantly improved when the optimization of the AO system is achieved. Also, we find that the higher BER is observed in the maritime FSO channel with atmospheric turbulence, as compared to the terrestrial FSO systems if they experience the same turbulence strength. (C) 2015 Optical Society of America
机译:我们评估了在海洋大气上采用正交阵列相移键控(QPSK)调制的相干自由空间光学(FSO)的性能,并通过使用自适应光学(AO)补偿了大气湍流。我们建立了适用于海事条件的全面FSO渠道模型,并对海事和地面大气层之间的性能进行了全面比较。 FSO链接基于散射和吸收效应,对数幅度波动以及湍流引起的相位畸变引起的强度衰减来建模。获得的结果表明,当实现AO系统的优化时,可以显着提高通过误码率(BER)衡量的FSO系统性能。此外,我们发现,与陆地FSO系统相比,如果它们经历相同的湍流强度,则在具有大气湍流的海上FSO通道中观察到更高的BER。 (C)2015年美国眼镜学会

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