Analysis of Received Power in Laser Communication Based on Cat's eye Modulating Retro-reflector

Laser communication based on cat's eye modulating retro-reflector can achieve a smaller matching size modulator than the other modulating retro-reflector communication modes, thereby achieving a faster communication rate. Considering the attenuation of the laser transmission process and converting the angular misalignment of the cat's eye lens into a line offset, the large field of view cat-eye retro-reflected modulating echo power model is established based on the Collins diffraction formula. The influence of communication distance, incident angle, defocusing amount, laser wavelength and receiving aperture on received power are simulated. The results show that the received power decreases with the increase of communication distance, laser incident angle and defocusing amount and increases first and then decreases as the laser wavelength increases; the larger the receiving aperture, the greater the receiving power.