摘要：For further exploring the confidentiality of optical communication,exponential synchronization for the delayed nonlinear Schrodinger equation is *** is possible for time-delay systems to generate multiple positive Lyapunov exponents without the limitation of system ***,the homoclinic orbit analysis is carried out by using the bifurcation theory,and it is found that there are two homoclinic orbits in the *** to the corresponding relationship,solitary waves also exist in the ***,the Melnikov method is used to prove that homoclinic orbits can evolve into chaos under arbitrary perturbations,and then chaotic signals are used as the carriers of information *** Lyapunov exponent spectrum,phase diagram and time series of the system also prove the existence of ***,an exponential synchronization controller is designed to achieve the chaotic synchronization between the driving system and the response system,and it is proved by the Lyapunov stability ***,the error system is simulated by using MATLAB,and it is found that the error tends to zero in a very short *** simulation results demonstrate that the proposed exponential synchronization scheme can effectively guarantee the chaotic synchronization within 1 s.