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Time-delay signature suppression in single loop optoelectronic oscillators based on sine hyperbolic nonlinear amplifier

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Abstract

A detailed study of the characteristics of the time-delay signature of a single loop optoelectronic oscillator incorporating a nonlinear amplifier of sine hyperbolic type is presented. We demonstrate that with appropriate values of the system parameters, the unique time-delay of the system cannot be traced in its dynamics. Such an advantage is exploited in synchronization using a scheme that confirms the use of the hidden time-delay as a key. Furthermore, a new tunable parameter which may serve as a key in a secure communication scheme arises as a result of the introduction of the nonlinear amplifier. We expect this system to emulate a general benefit in the physical equipment, and reduce their cost and congestion.

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Acknowledgements

The authors would like to acknowledge Della Tamin (South Africa) for providing some experimental equipments.

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Authors and Affiliations

  1. Research unit of Condensed Matter, Electronics and Signal Processing, Department of Physics, University of Dschang, P.O. Box 67, Dschang, Cameroon

    William Nodem Atchoffo, Jimmi Hervé Talla Mbé & Robert Tchitnga

  2. Laboratory of Modeling and Simulation in Engineering, Biomimetics and Prototypes, Department of Physics, University of Yaoundé I, P. O. Box 812, Yaoundé, Cameroon

    Paul Woafo

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  1. William Nodem Atchoffo
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  2. Jimmi Hervé Talla Mbé
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  3. Paul Woafo
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  4. Robert Tchitnga
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WNA and JHTM prepared the figures. All authors wrote and reviewed the main manuscript.

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Correspondence to Jimmi Hervé Talla Mbé.

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Atchoffo, W.N., Talla Mbé, J.H., Woafo, P. et al. Time-delay signature suppression in single loop optoelectronic oscillators based on sine hyperbolic nonlinear amplifier. Opt Quant Electron 55, 355 (2023). https://doi.org/10.1007/s11082-023-04625-y

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