, Volume 40, Issue 5-6, pp 425-430
Date: 14 Jun 2008

Demonstration of 10 Gbps, all-optical encryption and decryption system utilizing SOA XOR logic gates

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An all-optical encryption system built on the basis of electrical logic circuit design principles is proposed, using semiconductor optical amplifier (SOA) exclusive or (XOR) logic gates. Numerical techniques (steady-state and dynamic) were employed in a sequential manner to optimize the system parameters, speeding up the overall design process. The results from both numerical and experimental testbeds show that the encoding/decoding of the optical signal can be achieved at a 10 Gbps data rate with a conventional SOA cascade without serious degradation in the data quality.