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We demonstrate the first experimental implementation of intensity-modulation and direct-detection 7.6Gb/s DBPSK-based DSB optical Fast-OFDM with a reduced subcarrier spacing equal to half of the symbol rate per subcarrier over 40km SMF.
We propose offset-QAM based CoWDM, and show that the proposed system outperforms no-guard-interval optical OFDM and Nyquist WDM and enables the use of offset 4-, 16-, and 64-QAM with the performance approaching the theoretical limits.
In this paper, we review emerging technologies to build up Tb/s per channel transmission capacity. The different approaches, mainly based on various implementations of orthogonal frequency division multiplexing, Nyquist wavelength division multiplexing and optical time division multiplexing, are introduced and compared with respect to complexity, spectral efficiency and transmission reach. In addition...
Future optical networks will require the implementation of very high capacity (and therefore spectral efficient) technologies. Multi-carrier systems, such as Orthogonal Frequency Division Multiplexing (OFDM) and Coherent WDM (CoWDM), are promising candidates. In this paper, we present analytical, numerical, and experimental investigations of the impact of the relative phases between optical subcarriers...
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