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Proposal for ultrafast all-optical pseudo random binary sequence generator using microring resonator-based switches

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Abstract

An all-optical pseudo-random binary sequence (PRBS) generator is designed and simulated employing micro-ring resonators (MRRs) as the core technology. The PRBS generator consists of serially connected D flip-flops realized with double-bus MRR-based switches that exploit two-photon absorption induced in a pump-probe configuration, and of a MRR-based feedback XOR gate whose design is simpler than previously reported. The expected operation is theoretically validated for 3-bit and 4-bit degree PRBS generators and can be extended to higher PRBS orders with the straightforward addition of extra MRR-based D flip-flops. The MRR critical parameters, including radius, coupling coefficient and detuning, are optimized against performance metrics through numerical simulation at 250 Gb/s. The selection of these parameters according to the derived specifications can render feasible the practical implementation of the scheme and its exploitation for all-optical signal processing purposes.

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Correspondence to Kyriakos E. Zoiros.

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Rakshit, J.K., Zoiros, K.E. & Bharti, G.K. Proposal for ultrafast all-optical pseudo random binary sequence generator using microring resonator-based switches. J Comput Electron 20, 353–367 (2021). https://doi.org/10.1007/s10825-020-01586-3

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