Design of optical antenna system for free space optical communication
This study focuses on the theoretical research and practical design of optical antenna transmission systems,and calculates the initial structure of the optical system using the scaling method.The Cassegrain system is selected as the research object,which consists of a parabolic primary mirror and a hyperbolic secondary mirror.By using Zemax software for simulation,a Cassegrain transmission system is constructed,which is characterized by small size and excellent image quality.By optimizing the system structure,the spot size is 2.157μm and the wavefront error is 0.0166 wavelengths,resulting in excellent image quality.The simulative results show that the system can achieve a transmission power of 174 mW and a transmission efficiency of 87%at a distance of 5 kilometers.This study not only provides an effective optical antenna design method,but also has certain guiding significance for the practical application of optical antennas.
free space optical communicationoptical antenna technologyCassegrain antenna structurezooming method
NETL
NSTL
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