Performance analysis on free space underwater data transmission using Bessel-Gaussian beams in a simulated ocean channel with various effects
Performance analysis on free space underwater data transmission using Bessel-Gaussian beams in a simulated ocean channel with various effects
复制标题
具有各种影响的模拟海洋通道中使用贝塞尔-高斯光束的自由空间水下数据传输性能分析
DOI：
10.1016/j.optcom.2020.125969
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发表时间：
2020
影响因子：
2.4
通讯作者：
Tong Shoufeng
中科院分区：
文献类型：
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作者：
Wang Yang;Zhang Peng;Wang Xuelei;Li Xiaoyan;Wang Tong;Wang Dashuai;Wang Chao;Tong Shoufeng
贝塞尔-高斯（BG）光束在抗大气湍流或海洋湍流的光通信中显示出巨大的应用潜力。采用开关键控（OOK）调制格式，对1 m自由空间光链路在海流、温度梯度、散射和气泡等海洋信道条件下的水下数据传输性能进行了实验研究和分析。这些条件会使信号波前发生畸变，从而产生误差。这项工作表明，在海洋信道条件的影响下，使用520 nm BG光束的水下数据传输性能的改善。与高斯光束相比，BG光束具有更小的光束漂移和更稳定的接收功率。此外，在电流和温度梯度的影响下，BG光束在几Mbps数据速率下的误码率（BER）提高了1 ~ 2.5个数量级。BG光束为抵抗各种影响因素提供了一种稳健而有用的选择。
Bessel–Gaussian (BG) beams have shown their great potential application in optical communication for resisting atmospheric turbulence or ocean turbulence. Using On/Off Keying (OOK) modulation format, an underwater data transmission performance over 1m free space optical link under various oceanic channel conditions, such as current, thermal gradient, scattering and bubbles, is experimentally demonstrated and analyzed. These conditions can distort signal wavefront, and lead to errors. This work shows the improvements in underwater data transmission performance under influence of oceanic channel conditions using a 520 nm BG beams. By comparing with Gaussian beams, BG beams exhibited lower beam wander and more stable receiver power. Additionally, the bit error rate (BER) of BG beams at several Mbps data rate improved 1∼ 2.5 orders of magnitude under influence of current and thermal gradient. BG beams offer a robust and useful choice for resisting various influence factors.