Abstract
In this paper beam propagation analysis of a multi-beam multi-collimator opticalcommunication system through free space is studied. For this purpose, the propagationproperties of Gaussian multi-beams through a multi-optical path including collimators intransmitters are studied and an analytical formula for intensity distribution is derived. Theeffects of beam divergence and beam separation distances on the propagation propertiesof Gaussian multi-beams are studied in detail by calculating the beam widthand power in bucket (PIB). The analyses are illustrated by numerical examples.
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