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以目前技术最为成熟、应用最为广泛的强度调制/直接检测(IM/DD)体制的自由空间激光通信体制为例,利用自主研发的无线激光通信系统,采用漫反射的方法,研究了小功率脉冲激光对自由空间激光通信的干扰效果。利用不同调制频率、不同脉宽的半导体激光器和固体激光器分别进行了多次激光干扰实验,证明了干扰的可行性,得出了调制频率、脉宽与干扰效果的关系,并结合自由空间激光通信原理和通信设备的工作流程对实验现象加以解释和分析,提出了低功率脉冲激光对通信系统实现干扰的条件。
Taking the free-space laser communication system with the most mature and most widely used intensity modulation / direct detection (IM / DD) system as an example, this paper uses the self-developed wireless laser communication system and the diffuse reflection method to study the effects of low power pulse Interference Effects of Laser on Free Space Laser Communication. The experiments of laser interference with semiconductor lasers and solid state lasers with different modulation frequencies and different pulse widths have been carried out respectively. The feasibility of the interference has been proved. The relationship between the modulation frequency and pulse width and the interference effect has been obtained. Combined with the free space laser communication Principle and communication equipment to explain the experimental phenomena and analysis of the phenomenon, put forward the low-power pulsed laser communication system to achieve the conditions of interference.