Abstract

In this paper, we analyze the scintillation index of a partially coherent beam propagating through weak oceanic turbulence, taking into account the pointing errors attributed to the slightly skewed underwater platform. First, we formulate the longitudinal distance and the radial distance of an underwater optical wireless communication link according to the changes in the position and the posture of the platform. Then, we derive an expression for the scintillation index of a partially coherent beam propagating through weak oceanic turbulence. Finally, we obtain the scintillation index in view of the pointing errors attributed to the changes in the position and the posture of the platform. The numerical results show that the scintillation index is underestimated without considering the effects of the skewed underwater platform. Furthermore, compared with a coherent beam, a partially coherent beam may not always lead to smaller scintillation index in consideration of the pointing errors resulting from the skewed underwater platform.

© 2019 Optical Society of America

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