Abstract
The discovery of ultra-high-speed all-optical switches in the very recent past based on semiconductor optical amplifier (SOA) especially in the interferometric configuration is very pronouncing due to their features like high repetition rate, low power consumption, fast switching time, noise and jitter tolerance, being easily integrable and operationally versatile, thereby bringing a revolution in all-optical information processing systems. In this work, an all-optical computing tool namely SOA-based [Formula: see text] terahertz optical asymmetric demultiplexer (TOAD) is used because it can be employed to design more complex circuits and subsystems of enhanced combinational and sequential functionality. In this paper, (a) a switching network with its two switching actions and (b) an all-optical [Formula: see text] cross-bar network architecture, i.e., a multistage cube network for [Formula: see text] using TOAD-based [Formula: see text] optical cross-bar switch for discrete Fourier transform (DFT), are proposed. Numerical simulation of this work is done with OptiSystem v7.0 to evaluate the performance of the proposed circuit.
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