Fig. 2: Experimentally measured eye diagrams and BER at the output of the boundary waveguide. | Nature Communications

Fig. 2: Experimentally measured eye diagrams and BER at the output of the boundary waveguide.

From: A topological nonlinear parametric amplifier

Fig. 2

a, b An open eye is observed in both cases for a 30 Gb/s NRZ and b 56 Gb/s PAM4 data. c Experimentally measured plot of –log(BER) as a function of power received at the output of the USRN topological photonic waveguide, for 30 Gb/s NRZ and 56 Gb/s PAM4 data. The black dotted line shows the Forward Error Correction (FEC) threshold at BER = 10−4. The measured NRZ BER for the topological waveguide and B2B setup are shown as red and black circles, respectively. The measured PAM4 BER for the topological waveguide and B2B setup is shown as green and blue crosses respectively.

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