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A design and simulation of the laser beam shaping system which can be used in free space optical communication transmitter head prototype are presented. The design of refraction beam shaper has been performed and verified in optical design software ZEMAX. Because a Top-hat beam source is less affected by turbulence in atmosphere comparing with a Gaussian beam source, the scintillation index of the...
Free space optical (FSO) communication links offer a number of advantages over radio frequency links. Main advantages of FSO communication links are electromagnetic compatibility, license-free band and high data rate. However, reliability of these links is highly dependent on atmospheric and weather conditions. An optical wave propagating through the atmospheric transmission media is very sensitive...
The paper deals with study of temperature turbulences effect towards the optical beam. The horizontally and vertically polarized optical beams have been studied. The turbulence flux has the vertical direction and the optical beam is propagating through the atmosphere environment with three different states of turbulences. The evaluation of obtained data was done by means of relative variance of optical...
The paper is focused on the comparison of Top Hat and Gaussian beam properties from the perspective of received optical power. Gaussian beam is very well known, so there isn't necessary to describe it, on the other hand Top Hat beam, which is created from Gaussian beam, isn't used so widely. Creation of Top Hat is briefly described in this contribution. The main point of the contribution is comparison...
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