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Underwater communication plays an important role in communication field. As underwater communication has very special scenario, traditional communication technologists can not be transplant directly, blue-green laser communication has been used in underwater wireless communication system for many years. In this paper, we analyze the relationship between output laser intensity and forward scattering coefficient. Monte Carlo simulation mechanism is used in this paper as a tool to simulate a specific environment. Simulation results show that with increasing of forward scattering coefficient the value of biggest output laser intensity will enhance step by step. We also find that the forward scattering coefficient under the rule of Poisson distribution with the biggest output laser intensity.

Nderwater laser communication is an efficient communication method used in underwater environment. It has been used in many instruments to achieve high speed and wide band data transmission. In the presented paper, we simulate and analyze the affection on laser transmitting caused by random particle. We use Monte carol mechanism as tool to simulate a scenario of underwater laser communication. We focus on the relationship between density of different particles in water and the transmission area. Simulation results show that the output laser intensity under the rule of exponential distribution with the extend of communication area. We also find that although density is different the position of the strongest output light intensity is always at the second and the third line in simulation.