M.F.Anith, A.Rajendran
Underwater wireless optical communications (UWOC) has attracted considerable attentions as an alternative technology to traditional acoustic approach. As a special type of free space optical (FSO) communications, UWOC systems employ the blue/green region of visible light spectrum to realize data transmission since this region of light suffers lowest attenuation in natural water. The multiple scattering effect may spread beam pulse both temporally and spatially, which plays a key role in beam propagation. The spatial beam spreading has been studied. More recently, the impulse response of underwater optical links has been studied. Most prior works have adopted Monte Carlo approach to model the impulse response of UWOC links. Instead of Monte Carlo method, Jaruwatanadilok developed an analytical model of impulse response based on the vector radiative transfer theory. Wei et al. have proposed an inverse Gaussian function to model the impulse response of UWOC links. Their work only focused on the half amplitude width extension between the transmit and receive pulses in time domain without comparing the theoretical shape of impulse response with that from either Monte Carlo simulations or experiment.
Monte carlo model; Double gamma model