25 Gbit/s per user coherent all-optical ofdm for tbit/s-capable PONs


We have a tendency to propose and check a coherent all-optical orthogonal frequency-division multiplexing (AO-OFDM) system, based mostly on all-optical (de)multiplexing and coherent detection, for multiterabit per second (multi-Tbit/s) passive optical networks (PONs). The proposed approach allows us to greatly increase the downstream information rate per user and extend the quality single-mode fiber reach for future long-reach applications. The compliance with a next-generation PON layout is guaranteed thanks to the exploitation of cyclic arrayed waveguide gratings. 5-user transmission with twelve.5 Gbaud quadrature section shift keying modulation per user (one hundred twenty five Gbit/s downstream capacity per wavelength) over a more than 40 km link has been successfully demonstrated.

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