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We report on the transmission experiment of seven 12.5-GHz spaced all optical-orthogonal frequency division multiplexed (AO-OFDM) subcarriers over a 35-km fiber link, using differential quadrature phase shift keying (DQPSK) modulation and direct detection. The system does not require chromatic dispersion compensation, optical time gating at the receiver(More)
We propose and test a coherent all-optical orthogonal frequency-division multiplexing (AO-OFDM) system, based 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 data rate per user and extend the standard(More)
We describe an innovative transceiver for both all-optical orthogonal frequency division multiplexing (AO-OFDM) and Nyquist wavelength division multiplexing (NWDM) systems, that allows flexible superchannel generation, by varying the number of the subcarriers, the modulation formats and the corresponding bit rates.
We consider a simple and effective solution for unbundling the local loop in optical access networks, based on the orthogonal frequency division multiplexing technique, without coherent detection. The proposed architecture has a reduced power consumption and allows a flexible and scalable resource assignment among the operators and/or the users. System(More)
A novel high-capacity, energy-efficient and bit-rate flexible optical transceiver (Tx/Rx), capable of supporting rates from 10Gb/s to beyond 1Tb/s, has been designed and its performance in long-haul transmission has been carefully investigated. The device can realize both orthogonal frequency division multiplexing (OFDM) and Nyquist wavelength division(More)
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