Fig. 5: Comparisons with other operation frequencies and different solutions. | Communications Physics

Fig. 5: Comparisons with other operation frequencies and different solutions.

From: Bright and dark Talbot pulse trains on a chip

Fig. 5

a Illustration of the compatibility with other operating frequencies, with the examples being 12, 20, and 28 GHz inputs and forming the corresponding 24, 40, and 56 GHz outputs. The delay between the two vertical dashed lines is 125 ps, as in the chip design. The blue solid lines denote the original pulse trains, and the red dash-dotted lines represent the delayed pulse trains. b Form factor comparison among the other solutions to double the repetition rate of a pulse train. The schematic sketch of the waveforms (red) is in the temporal domain, and the comb spectra (yellow) are in the frequency domain. MZ DLI Mach-Zehnder delay line interferometer, SMF single-mode fibre.

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