Abstract
We experimentally demonstrate a channel-reuse, bidirectional 40Gb/s/λ, long-reach wavelength-division-multiplexing passive optical network (WDM-PON) and an optical intensity detection-based wavelength management method for tunable optical transceiver used in colorless optical network unit. A 100km reach, channel-reuse, 40Gb/s/λ transmission on a 100GHz WDM grid is achieved. Transmission performance is also measured with different optical-signal-to-Rayleigh-backscattering-noise ratios (OSRBNRs) and different central wavelength shifts (WSs) between upstream signal and downstream signal in the channel-reuse system. Optimal operating wavelength for the uplink optical signal and effective OSRBNR configurations taking into account AWG pass-band, wavelength instability of the bidirectional optical transmitters are proposed.
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