Ultrafast Optical Message Encryption-Decryption System Using Semiconductor Optical Amplifier based XOR Logic Gate

A new type of encryption system is demonstrated at 120 Gb/s which is based on cross phase modulation effect in semiconductor optical amplifier (SOA). Encryption process is achieved by using SOA based XOR logic gate. The feasibility of proposed encryption system is verified through simulation. It has also been demonstrated that proposed encryption decryption scheme exhibit better performance than existing XOR logic scheme in terms of data rate and quality factor.