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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.
We propose full-field detection based multi-chip MLSE to improve the receiver sensitivity, CD tolerance, and flexibility of the AMZI delay of the offset-DQPSK format, while retaining the simplicity of its pre-coder and single-AMZI demodulator.
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...
We propose a new metric to significantly simplify 4-state full-field maximum likelihood sequence estimation, demonstrate its use in a 372 km field-installed fiber transmission experiment without performance degradation, and investigate the influence of critical system parameters.
We propose a novel field-detection based maximum likelihood sequence estimation (FD-MLSE), and experimentally demonstrate transmission over 372 km of field-installed SMF without optical dispersion compensation using a 4-state MLSE.
We propose a novel maximum a posteriori probability (MAP) detector in coherent WDM systems, which exhibits significant improvement in back-to-back receiver sensitivity, chromatic dispersion and phase misalignment tolerance.
Accessing the full optical field with the addition of only a single AMZI and photodiode to the receiver enhances the reach of receiver side electronic dispersion compensation to 2160 km without the complexity of coherent detection.
We experimentally verify the feasibility of receiver-side electronic dispersion compensation using optical-field reconstruction, and theoretically increase the fundamental limit of this technique to 2000 km by successfully suppressing the instability from low-frequency amplification in phase reconstruction.
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