This work aims at illuminating an UTC-PD array with a multicore fiber towards multiple THz carrier generation. This photonics-based transmitter is expected to increase either the data rate via spatial multiplexing on different carriers or the emitted THz-power and therefore the transmission reach of THz systems operating in 300 GHz band. Preliminary results of the characterization of the sub-systems of the transmitter that is under development are presented here.
KEYWORDS: Modulation, Signal to noise ratio, Frequency combs, Phase shift keying, Reflectometry, Heterodyning, Energy transfer, Signal attenuation, Picosecond phenomena, Oscillators
We experimentally investigate the noise-driven thermalization of the Fermi Pasta Ulam Tsingou (FPUT) recurrences. In fiber optics, such dynamic is observed when the spontaneous modulation instability (MI), generating noise floor amplification, is able to compete with seeded MI, at the origin of the coherent energy transfers between the Fourier modes. An input noise tuning setup is implemented, combined with a heterodyne time domain reflectometer which allows to record the power and phase distributions of the Fourier modes. By also recording the fiber output spectra, we highlight a progressive loss of the process coherence and the breakup of the FPUT recurrences.
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