Jayanta Kumar Rakshit

All-optical XOR/XNOR logic gate using micro-ring resonators

Simultaneous logic and its inverse operation in a single circuit is very important and effective research topics in optical computing recently. Many designes have been proposed by many authors in different approach. Among them micro-ring resonator based ‘directed logic’ circuit is attractive, because it can be easily fabricated in chip level. But most of the proposed logic circuits are based on electrical pumping. To over come the optical-electrical bottleneck here we have used optical pumping rather than electrical. In this literature we proposed two cascaded micro-ring resonator based all optical circuit capable of carrying out simultaneous XOR and XNOR operations. Simulation results confirming described method is also reported. The proposed all-optical logic circuit can be easily extended to n-bit XOR/XNOR circuit which is also shown in this manuscript.

Design of all-optical JK, SR and T flip-flops using micro-ring resonator-based optical switch

In the present communication, all-optical clocked J–K flip-flop is proposed and described using silicon waveguide-based optical micro-ring resonator (OMRR). We have used two optical pump signals representing the two operands (J and K) of the logical operation to modulate the OMRRs under low pump power condition. A theoretical model of the proposed J–K flip-flop and hence S–R and T flip-flop are developed using micro-ring resonator through pump–probe configuration. Numerical simulation results for clocked flip-flop circuits verifying the proposed method are given in this paper. We identified a combination of feasible OMRR radius and detuning through numerical simulation which allows analyzing the system performance of the scheme such as maximum amplitude difference between marks

Light tuning DC and AC electrical properties of ZnO-rGO based hybrid nanocomposite film

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Design of all optical 1-bit and 2-bit magnitude comparator using micro-ring resonator

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Manchester code generation scheme using micro-ring resonator based all optical switch

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All-optical conversion scheme from n to 2 n line decoder using micro-ring resonators

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