All Optical Half Adder Design Using Equations Governing XGM and FWM Effect in Semiconductor Optical Amplifier

In this paper Mechanism of XGM and FWM, in SOAs is taken into consideration to develop the logic of the half adder circuit. A Matlab simulation analysis based on crossgain modulation in a semiconductor optical amplifier is presented. This work shows the utilization of nonlinear properties of the semiconductor optical amplifier SOA in constructing optical logic gates. The various equations representative of the pump, probe and conjugate pulses in a SOA are first solved. The pulse behavior are analyzed and applied to realize behavior of alloptical various gate. This design is very economical and integration capable. The full design is easy to understand and one can approach to make chip. Error monitoring and error debugging in our design is easy than all other design reported yet. The various outputs can be manipulated in different manner by making change in inputs. The waveform proves the behavior of ‘Half Adder’ circuit taken into consideration. Fully tested and verified output is presented in this paper.