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Design, simulation and testing of the OOK NRZ modulation format for free space optic communication in a simulation box

机译:OOK NRZ调制格式的设计,仿真和测试,用于在仿真箱中进行自由空间光通信

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摘要

This article deals with the construction of a modulator and demodulator for Free-Space Optical (FSO) communication. In FSO optics, the modulated optical signal is propagated in the constantly changing environment (atmosphere). The optical signal is strongly influenced by the actual composition of air, which is directly linked to the change in refractive index in the turbulent cells. This article examines primarily the appropriate modulation format for FSO. For this purpose, one type of an OOK-NRZ modulator and one type of a demodulator were designed. This article also describes the construction of two types of photo detectors (the high impedance and the transimpedance ones). All electronic constructions were tested in the MicroCap simulator and they were experimentally measured as well. For the OOK NRZ modulation the, maximum transmission speed achieved the value of 160~Mbps. Measuring the quality of the modulation formats was carried out under mechanical and thermal turbulences. The last part of this work gives the results of the measurements of fog influences.
机译:本文讨论用于自由空间光(FSO)通信的调制器和解调器的构造。在FSO光学器件中,已调制的光学信号在不断变化的环境(大气)中传播。光信号受空气的实际成分的强烈影响,空气的实际成分与湍流单元中折射率的变化直接相关。本文主要研究适合FSO的调制格式。为此,设计了一种OOK-NRZ调制器和一种解调器。本文还介绍了两种类型的光电检测器的结构(高阻抗和跨阻抗的)。所有的电子结构都在MicroCap模拟器中进行了测试,并且也进行了实验测量。对于OOK NRZ调制,最大传输速度达到160〜Mbps。在机械和热湍流下测量调制格式的质量。这项工作的最后一部分给出了雾影响的测量结果。

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