Design and implementation of cipher algorithm based secure optical communication system

摘要

The need for high levels of data privacy in various applications has made transmitting safe data more crucial. In this work, a cipher algorithm based secure optical communication system is demonstrated via OptiSystem software to transmit a secure message over a link distance of 100 km with bitrate of 80 Gbps. The message in the electrical domain is encrypted and decrypted using the MATLAB component via Rivest Cipher 4 (RC4) algorithm. The results show that message encryption decreased link distance from 77.4 to 63 km by around 18.6 as a result of an increase in the dispersion effect. Dispersion compensation fiber (DCF) is used to address this problem, increasing link distance from 63 to 100 km by roughly 58.73.