Scintillation and bit error rate performance comparison of bottle and sine hollow beams

This thesis involves scintillation behavior, and probability of error estimation of optical wireless communication links using bottle and sine hollow beams on the source plane. In addition to performance over communication link, propagation and kurtosis parameter of bottle beams are analyzed as well. Analytical derivation of scintillation of bottle beam is performed utilizing Rytov scintillation theory. Since equations becomes too complicated to solve intensity profiles, kurtosis parameter, scintillation estimation, and probability of error values of selected bottle beams are obtained benefiting from random phase screen approach. Utilizing the same method, scintillation index and bit error rate(BER) of sine hollow beam are evaluated too. Our results show that asymmetric bottle beams have less scintillation value under the same conditions as compared to corresponding symmetric ones. This brings us, asymmetric bottle beams have less bit error rate when signal to noise ratio is constant. Since, scintillation index of sine hollow beam becomes less than Gaussian beam in weak turbulence, this beam seems advantageous considering BER for weak turbulence. Scintillation results are compared with spherical wave and obtained probability of error values are compared with the analytical formula and plotted in this study.