摘要
In this work,a blue gallium nitride(GaN)micro-light-emitting-diode(micro-LED)-based underwater wireless optical communication(UWOC)system was built,and UWOCs with varied Maalox,chlorophyll,and sea salt concentrations were studied.Data transmission performance of the UWOC and the influence of light attenuation were investigated systematically.Maximum data transmission rates at the distance of 2.3 m were 933,800,910,and 790 Mbps for experimental conditions with no impurity,200.48 mg/m3 Maalox,12.07 mg/m3 chlorophyll,and 5 kg/m3 sea salt,respectively,much higher than previously reported systems with commercial LEDs.It was found that increasing chlorophyll,Maalox,and sea salt concentrations in water resulted in an increase of light attenuation,which led to the performance degradation of the UWOC.Further analysis suggests two light attenuation mechanisms,e.g.,absorption by chlorophyll and scattering by Maalox,are responsible for the decrease of maximum data rates and the increase of bit error rates.Based on the absorption and scattering models,excellent fitting to the experimental attenuation coefficient can be achieved,and light attenuation by absorption and scattering at different wavelengths was also investigated.We believe this work is instructive apply UWOC for practical applications.
In this work, a blue gallium nitride(GaN) micro-light-emitting-diode(micro-LED)-based underwater wireless optical communication(UWOC) system was built, and UWOCs with varied Maalox, chlorophyll, and sea salt concentrations were studied. Data transmission performance of the UWOC and the influence of light attenuation were investigated systematically. Maximum data transmission rates at the distance of 2.3 m were 933, 800, 910,and 790 Mbps for experimental conditions with no impurity, 200.48 mg/m^3 Maalox, 12.07 mg/m^3 chlorophyll,and 5 kg/m^3 sea salt, respectively, much higher than previously reported systems with commercial LEDs. It was found that increasing chlorophyll, Maalox, and sea salt concentrations in water resulted in an increase of light attenuation, which led to the performance degradation of the UWOC. Further analysis suggests two light attenuation mechanisms, e.g., absorption by chlorophyll and scattering by Maalox, are responsible for the decrease of maximum data rates and the increase of bit error rates. Based on the absorption and scattering models,excellent fitting to the experimental attenuation coefficient can be achieved, and light attenuation by absorption and scattering at different wavelengths was also investigated. We believe this work is instructive apply UWOC for practical applications.
作者
田朋飞
陈红兰
王培瑶
刘晓艳
陈新伟
周顾帆
张帅龙
鲁杰
仇鹏江
钱泽渊
周小林
方志来
郑立荣
刘冉
崔旭高
Pengfei Tian;Honglan Chen;Peiyao Wang;Xiaoyan Liu;Xinwei Chen;Gufan Zhou;Shuailong Zhang;Jie Lu;Pengjiang Qiu;Zeyuan Qian;Xiaolin Zhou;Zhilai Fang;Lirong Zheng;Ran Liu;Xugao Cui(Institute for Electric Light Sources,School of Information Science and Technology,Engineering Research Center of Advanced Lighting Technology,and Academy of Engineering and Technology,Fudan University,Shanghai 200433,China;Department of Chemistry,University of Toronto,Toronto,Ontario M5S 3H6,Canada)
基金
supported by the National Natural Science Foundation of China(NSFC)(Nos.61705041 and61571135)
Shanghai Sailing Program(No.17YF1429100)
Shanghai Technical Standard Program(No.18DZ2206000)
State Key Laboratory of Intense Pulsed Radiation Simulation and Effect Funding(No.SKLIPR1607)
National Key Research and Development Program of China(No.2017YFB0403603)
