Performance Analysis of Multi Modulation System in Optical Network and Multi Encryption Security Algorithm

Optical communication network provides the high speed data transmission with the advance digital modulation and enhanced security. The cryptography is also a science to secure the data during the long distance transmission. This paper presents the multi encryption approach based on the advance encryption standard and RSA approach as very high security algorithm and multi modulation technique to improve the data safety during the communication in optical network. The Limb Mach Zehnder Modulator is used for the optical digital modulation. Digital modulation provides the digital data security during the data transmission. The multi modulation stands the modulation of the already modulated signal. The designing and analysis of the multi modulation is performed using Optisystem-7.0 software and cryptography based multi encryption algorithm implement and simulate using the MATLAB 9.4 software.