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Ultra-fast Two-bit All-Optical Analog to Digital Convertor Based on Surface Plasmons and Kerr-Type Nonlinear Cavity

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Abstract

In this paper, a novel structure for realization of a 2-bit all-optical analog-to-digital converter (AOADC) is proposed. This structure consists of two plasmonic MIM waveguides and a nanodisk cavity filled with a Kerr-type nonlinear material. Numerical 2D finite-difference time-domain simulations show that the maximum sampling rate of the purposed structure can approximately reach to 5 TS/s. Furthermore, for the proposed structure, the input wavelength and the input power range can be tuned by adjusting the radius of the disk-shaped resonator and the signal wavelength, respectively. Since plasmonic devices have a high potential to be used in integrated optical circuits, the importance of this work become even more significant. Moreover, to the best of the authors’ knowledge, this is the first time that an AOADC base surface plasmonic MIM has been introduced.

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Data Availability

The datasets generated and analyzed during the current study are available from the corresponding author on reasonable request.

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Authors and Affiliations

  1. Electrical and Computer Engineering Faculty, Semnan University, 3513119111, Semnan, Iran

    Dariush Jafari, Mohammad Danaie & Ali Asghar Orouji

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  1. Dariush Jafari
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  2. Mohammad Danaie
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  3. Ali Asghar Orouji
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Contributions

Design, analysis, and investigation: Dariush Jafari. Writing—original draft preparation: Dariush Jafari. Writing—review and editing: Dariush Jafari and Mohammad Danaie. Supervision: Mohammad Danaie and Ali Asghar Orouji.

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Correspondence to Dariush Jafari.

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Jafari, D., Danaie, M. & Orouji, A.A. Ultra-fast Two-bit All-Optical Analog to Digital Convertor Based on Surface Plasmons and Kerr-Type Nonlinear Cavity. Plasmonics 16, 2101–2108 (2021). https://doi.org/10.1007/s11468-021-01474-x

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