Abstract
Abstract In this paper, we theoretically study the pointing errors effect on fiber coupling efficiency for Gaussian-beam wave with consideration of atmospheric turbulence. A numerical expression of the average fiber coupling efficiency is derived based on mutual coherence function of Gaussian-beam wave and effective transmitter parameters. Numerical results show that the coupling efficiency can be evidently degraded by the pointing errors and pointing errors effect also changes optimum design parameter. And other factors, such as path length and the refractive index structure constant, are also analyzed. It is anticipated that this work is helpful to investigate pointing errors effect on optical wave propagation in the atmospheric turbulence.
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