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We present the use of electronic dispersion pre-compensation at optical line terminals (OLTs) to increase the data rate as well as geographic coverage of passive optical networks (PONs). In time-division multiplexed PONs, the dispersion pre-compensation is made adaptive such that the signal blocks intended for different optical network units (ONUs) are compensated differently, based on the actual...
We describe a multi-band DFT-spread-OFDM equalizer that combines overlap-and-add dispersion compensation with OFDM demultiplexing for reduced guard interval and lowered DSP complexity, and demonstrate it in the transmission of a 22-Gbaud signal over 6400-km SSMF.
We discuss in this paper the leaky-wave propagation properties for one- and two-dimensional arrays of metamaterial or plasmonic inclusions with subwavelength transverse cross section. Our analysis is based on the rigorous dynamic dipolar coupling among the array elements. We show that an isolated array of plasmonic nanoparticles supports leaky wave modes and may operate as a frequency-scanning leaky-wave...
We discuss the impact of fiber nonlinearity on a recently-demonstrated 1.2-Tb/s polarization-division-multiplexed (PDM) coherent optical OFDM superchannel in long-haul transmission over 7200 km of ultra-large-area fiber. The improvement obtained by nonlinearity compensation is also discussed.
We experimentally demonstrate efficient detection of a 1.2-Tb/s 24-carrier NGI-CO-OFDM signal with 12.5-Gbaud PDM-QPSK carrier-modulation by simultaneously recovering 2 or 3 carriers per 50-GSamples/s-sampling, and show its performance after transmitting the signal over 7,200 km.
We show numerically that the nonlinear tolerance of a 112-Gb/s polarization-division-multiplexed coherent optical OFDM signal in inline-dispersion-compensated transmission can be substantially improved by a joint self-phase-modulation compensation scheme, particularly when optimized dispersion maps are used.
We show numerically that the nonlinear tolerance of a 112-Gb/s PDM-OFDM signal, coherently received with a robust and efficient channel estimation method, is substantially improved by fiber dispersion.
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