Compensation of a distorted N-fold orbital angular momentum multicasting link using adaptive optics.
Compensation of a distorted N-fold orbital angular momentum multicasting link using adaptive optics.
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DOI：
10.1364/ol.41.001482
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发表时间：
2016-04
期刊：
影响因子：
3.6
通讯作者：
Shuhui Li;Jian Wang
中科院分区：
文献类型：
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作者：
Shuhui Li;Jian Wang
通过使用自适应反馈校正技术，我们通过实验证明了携带轨道角动量（OAM）多播链路的自由空间四重和八重十六进制正交幅度调制（16-QAM）的湍流补偿。通过模拟大气湍流和自适应光学辅助补偿环路，研究了多播 OAM 光束的性能。实验结果表明，该方案能够有效补偿大气湍流引起的畸变，即减少组播OAM信道的功率波动、抑制信道间串扰、提高误码率（BER）性能。
By using an adaptive feedback correction technique, we experimentally demonstrate turbulence compensation for free-space four-fold and eight-fold 16-ary quadrature amplitude modulation (16-QAM) carrying orbital angular momentum (OAM) multicasting links. The performance of multicasted OAM beams through emulated atmospheric turbulence and adaptive optics assisted compensation loop is investigated. The experimental results show that the scheme can efficiently compensate for the atmospheric turbulence induced distortions, i.e., reducing power fluctuation of multicasted OAM channels, suppressing inter-channel crosstalk, and improving the bit-error rate (BER) performance.