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We have proposed and experimentally demonstrated a novel architecture for orthogonal frequency-division- multiplexing (OFDM) wavelength-division-multiplexing passive optical network with centralized lightwave. In this architecture, 16 quadrature amplitude modulation intensity-modulated OFDM signals at 10 Gb/s are utilized for downstream transmission. A wavelength-reuse scheme is employed to carry...
Novel bi-directional amplifier is employed in a WDM-PON system to increase power margin for both downstream and upstream signals. After 100-km SSMF transmission, the power-penalty for all channels at 10Gbit/s is less than 0.8 dB.
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