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Information propagation of focus wave mode localized waves in anisotropic turbulent seawater
JOSA A- received 12/18/2023; accepted 04/16/2024; posted 04/16/2024; Doc. ID 516209
- Abstract: The evolution of the information transfer capability of a new optical system forunderwater focused wave mode localized wave (FWMLW) in anisotropic weakly turbulentabsorbing seawater is studied. By developing the probability distribution function as well asthe detection probability of the vortex modes carried by the FWMLW and the average bit errorrate of the FWMLW underwater system, the information capacity of the FWMLW system withpointing error is modeled. Through numerical analysis of the effects of turbulent seawater andoptical system parameters on the built light intensity, the detection probability and theinformation capacity models, we find that the FWMLW system has an optimal delay timedetermined by the spectrum bandwidth when the spectrum bandwidth is greater than 1. Theinformation capacity of the FWMLW system is higher than that of the X localized wave systemunder the same turbulent seawater channel condition, and FWMLW is a better optical signalsource for vortex mode division multiplexing underwater systems than Bessel Gaussian beam.