Rate-Flexible Single-Wavelength TFDM 100G Coherent PON Based on Digital Subcarrier Multiplexing Technology

We propose a novel rate-flexible single-wavelength 100G time-and-frequency-division multiplexing coherent PON architecture based on digital subcarrier multiplexing technology. The architecture implementation with four subcarriers is demonstrated, achieving -38-dB sensitivity after 50-km fiber transmission.