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Experimental Characterization and Model Validation of Interference in Classical-QKD Coexistence Transmission

Lucas Alves Zischler, Amirhossein Ghazisaeidi, Carina Castiñeiras Carrero, Tristan Vosshenrich, Jeremie Renaudier, Antonio Mecozzi, Cristian Antonelli

Abstract

We present an experimental characterization of coexistence-induced interference in QKD transmission arising from SpRS and FWM, validating a comprehensive semi-analytical model for accurate noise estimation. Experimental results show good agreement with theoretical predictions.

Experimental Characterization and Model Validation of Interference in Classical-QKD Coexistence Transmission

Abstract

We present an experimental characterization of coexistence-induced interference in QKD transmission arising from SpRS and FWM, validating a comprehensive semi-analytical model for accurate noise estimation. Experimental results show good agreement with theoretical predictions.
Paper Structure (4 sections, 2 figures)

This paper contains 4 sections, 2 figures.

Table of Contents

  1. Introduction
  2. Models for coexistence impairments
  3. Experimental Results and Model Validation
  4. Conclusion

Figures (2)

  • Figure 1: Setup diagram for (a) sprs and (b) fwm measurements. (c) Measured attenuation profile.
  • Figure 2: (a) sprs efficiency as a function of frequency separation for pump signals at specified wavelengths. (b) Measured multi-band sprs noise. (c) fwm noise versus fiber length.