An alternative approach to design encryption and decryption circuits using reflective semiconductor optical amplifier

In recent times, we prefer high-resolution images, audios, videos, etc., so these contain a huge amount of data. As a result, high-speed data transmission is in demand. To achieve this purpose, optical communication plays a key role. Nowadays, in communication vital part is secure transmission from data hacking. To secure data transmission, encryption and decryption circuits play an important role. So, a design of dibit-based encryption and decryption circuits are developed using the reflective semiconductor optical amplifiers (RSOA). Two consecutive bit representation known as dibit representation, in which the ‘0 1’ and ‘1 0’ are implies logic state 0 and 1 respectively. We have simulated the devised design using soliton pulse. Here presence and absence of soliton pulse are observed as the bit ‘1’ and bit ‘0’. The above-mentioned designs have been verified using Matlab. With the help of this software, we have calculated the quality factor (Q), contrast (CR), and extinction ratios (ER). Using Matlab software, we have verified our proposed designs.