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Ultra-fast all-optical ADC using nonlinear ring resonators in photonic crystal microstructure

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Abstract

In this paper, we report a new design of a two-bit all-optical analog-to-digital converter (ADC) based on photonic crystal ring resonators. The photonic crystal structure has a square lattice of silicon rods, and four ring resonators carry out sampling and quantizing with linear and nonlinear rods at a wavelength of 1550 nm. Our calculations reveal that the proposed ADC has a maximum response time of about 4 ps and a sampling rate of 125 GS/s that is much faster than the ADC in previous studies. The proposed ADC also has a small area (called footprint) with a minimum leakage loss, considered the most suitable device in photonic integrated circuits.

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Correspondence to Shahrzad Ramtin Fard.

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Ramtin Fard, S., Salehi, M.R. & Abiri, E. Ultra-fast all-optical ADC using nonlinear ring resonators in photonic crystal microstructure. Opt Quant Electron 53, 120 (2021). https://doi.org/10.1007/s11082-021-02769-3

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  • DOI: https://doi.org/10.1007/s11082-021-02769-3

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