Channel Capacity of the Carrier of Relative Rotation Double Gaussian Vortex Laser in Weak Turbulence and Extinction Seawater

In this paper, we investigate the character of relative rotation double Gaussian vortex laser propagating in four types of typical extinction seawater. We derive the detection probability of the OAM mode carried by relative rotation double Gaussian vortexs and the capacity of the communication channel. We find that the relative rotation double vortex Gaussian beam with inverse spiral and polarization reversal carrier is more suitable for underwater wireless optical communication.