Implementation of All-optical Trinary State Half-adder Using Semiconductor Optical Amplifier Supported by Simulation Experiment

The bottleneck of electronic systems due to the increase of requirements of very large bandwidth and speed was removed by photonic systems owing to its inherent parallelism and high speed of operation which also made it a strong contender in optical data processors. In a Photon one can encode digital information in its Amplitude, Frequency, Phase and Polarization properties. As frequency is the basic characteristic of light, so frequency encoding principle is the most reliable one among all other encoding principles. In Frequency encoding, the schemes become immune to noise. The frequency of light does not change normally after reflection, refraction or absorption. It can be used in several faithful high bandwidth real-time optical logic processors which in the future can dominate the optical communication and data processing systems. For different frequency-shifting operations, we can use Semiconductor Optical Amplifier (SOA) in real-time. In this proposed scheme, using the SOA, the Trinary state-based half adder has been proposed for optical communication, where in the Trinary state ‘-1’ logic state is represented by a frequency ν ₁ then the ‘0’ state is represented by another frequency ν ₂ and the ‘1’ logic state is represented by a frequency ν ₃ . The photonic schemes proposed are also being verified by Matlab Simulink simulation.