All-optical carrier recovery with periodic optical filtering for wavelength reuse in RSOA-based colorless optical network units in full-duplex 10Gbps WDM-PONs

Optically assisted downstream cancellation for wavelength reuse in WDM-PONs is demonstrated, allowing downstream extinction ratios up to 9 dB for symmetrical full-duplex data transmission at 10Gbps with RSOA-based ONUs. PON budgets of ~20dB can be reached.

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