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An overview of several candidate architectures for 100 Gb/s capable optical access networks is presented. Considerations for their system requirements are outlined in regards to performance, cost and energy efficiency, towards addressing the design issues for the next generation EPON.
A detailed investigation of multigigabit wavelength reuse DWDM system tolerance to bidirectional crosstalk, conditioned by the maximum seed power budget and channel spacing, was preformed. Maximum tolerated seed powers were measured for DSF and SMF, for 10 Gb/s NRZ US signal. We demonstrated that high power regime reveals that the most dominant nonlinear impairment arises for the seed frequency shift...
We present and experimentally characterize a spectrally efficient, bidirectional, ultradense wavelength-division multiplexing passive optical network (PON) (2 × 120 Gb/s at 50 GHz) over 30 km standard single-mode fiber. This is achieved using a 4 GHz grid with partial spectrum overlapping, Nyquist-shaped 16-ary quadrature amplitude modulation, and digital frequency shifting. This scheme is based on...
We present a coherent-PON employing partial overlap of downstream/upstream Nyquist spectra, allowing bi-directional operation and enhanced spectral efficiency (2×120Gb/s@50GHz). Additionally, frequency shifting of Nyquist bands from the carrier allowed reduced RBS and dynamic SRS.
A computationally efficient, time-domain model for simulation of spatial-temporal distribution of photons and carriers in a bulk RSOA is presented. Saturation, noise, chirp and signal broadening are successfully predicted for NRZ and QPSK signals.
A dynamic, wideband model for simulation of spatial-temporal distribution of photons and carriers in a bulk InP-InGaAsP reflective semiconductor optical amplifier (RSOA) is presented. Saturation and noise characteristics are successfully predicted and in good accordance with theoretical predictions found in literature. Based on RSOA model and a model for access network link, numerical optimization...
We experimentally investigated the efficiency of the Brillouin induced FWM process, using two types of fibers. Even with the pump power levels above the SBS threshold, the power of the FWM signal was found to saturate at low power, inducing low crosstalk in bidirectional WDM transmission.
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