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Proroposed receiver for zero padded OFDM combines single-tap equalizer and successive interference cancellation (SIC) detection. Numerical simulations on MMF links show that the proposed scheme reach of 33.9 Gb/s in a 600 m link, saving more than 75% of computational complexity respect original SIC receiver.
We review recent progress of space division multiplexing technologies using few-mode and multi-core fibers. Heterogeneous design has been demonstrated as a key technology for dense core arrangement. Highest spatial channel density and over-100 spatial channel count were realized with a heterogeneous 36-core 3-mode fiber.
We propose a novel hybrid pulse amplitude modulation single carrier frequency domain equalization (PAM-SC-FDE) system that outperforms similar unipolar systems in terms of bit error rate (BER), bandwidth efficiency, and peak-to-average power ratio (PAPR).
We demonstrate BPSK modulation using a silicon traveling-wave modulator at data rate up to 48 Gb/s, with 7.4 Vpp differential RF driving voltage. The performance of the silicon BPSK modulator is compared with a commercial Lithium Niobate phase modulator, showing better dispersion tolerance.
The performance of dual-carrier 400G solutions based on three high-order quadrature amplitude modulation (QAM) formats (8/16/32-QAM) is investigated on the same platform. We first study the benefit and penalty differences of Gray and differential coding, and then experimentally compare OSNR sensitivities and transmission performance using flexible transceiver configuration and the same EDFA-only SSMF...
We demonstrate 400Gb/s and Tbit/s transmission using Q-Well and Q-Dash mode locked laser comb sources respectively. The aggregate capacities achieved were 473.6Gb/s for 37.6GHz Q-Well device, and 1.344Tb/s for 44.7GHz Q-Dash device using IM/DD-SSB-OFDM.
In this paper we present the first detailed numerical comparison of two promising all-optical schemes to demultiplex orthogonal frequency-division multiplexing (OFDM) signals. The investigated schemes are the optical discrete Fourier transformation (O-DFT) and the optical spectral magnification (SM) based on time lenses. In the former scheme, cascaded delay-interferometers (DIs) are used to perform...
We report a cladding-pumped 10-modes EDFA with modal gain > 20 dB over the C-band, zero differential modal gain and ∼9 dB noise figure. Further, we successfully demonstrate a BER below 10−10 at 400 Gb/s.
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