自由空间光学系统与光束发散角相关的链路预算优化

H. Ivanov, E. Leitgeb, T. Plank, P. Bekhrad, Tsvetan Mitsev
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引用次数: 6

摘要

自由空间光通信系统的性能在很大程度上取决于其工作参数的精确选择和调整。适当地确定发散角可以明显地补偿由于各种恶化影响而引起的光束偏离其主方向的负面影响。本文推导了计算最佳发散角的数学方程。根据所得结果,计算了FSO系统的链路预算和链路余量。此外,还研究了最佳散度与光源功率和波长的关系。与此相关,文中还附上了足够的数据,表明在波束漂移和其他退化影响条件下,FSO系统具有较好的可靠性。
本文章由计算机程序翻译,如有差异,请以英文原文为准。
Link budget optimization of free space optical systems in relation to the beam diverging angle
The performance of a Free Space Optical (FSO) communication system is highly dependent on the precise selection and adjustment of its operation parameters. The appropriate determination of the angle of divergence can noticeably compensate the negative impact of deviations of the optical beam from its main direction caused by a variety of deteriorative influences. Mathematical equations for calculating the optimum diverging angle are derived within this work. Regarding the obtained results, the link budget and the link margin of FSO systems are calculated. In addition, the dependence of the optimum divergence on the power and the wavelength of the optical source is investigated. In relation to this, enough figures showing evidently the better reliability of a FSO system in condition of beam wandering as well as other degradative impacts are attached.
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