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We demonstrate 120.7-Tb/s SDM/WDM unrepeatered transmission over a 204-km 7-core fiber with aggregate spectral efficiency of 53.6 b/s/Hz using a remotely pumped 7-core EDFA and Raman amplification. 17.2-Tb/s (180 × 95.8 Gb/s) PDM-32QAM signals have been transmitted at each core.
We demonstrate 102.3 Tb/s transmission over 3×80 km of PSCF by employing 548-Gb/s PDM-64QAM single-carrier frequency-division-multiplexing (SC-FDM) signals with pilot tone and 11.2-THz ultra-wideband low-noise amplification in the C- and extended L-bands.
Quantum-dot (QD) semiconductor optical amplifiers (SOAs) offer large differential gain, good temperature stability, and low chirp due to the discrete energy states of the electrons and holes under three-dimensional quantum confinement by the QDs. And recent reports of their high saturation power, ultra-broad bandwidth, and unique nonlinear properties [1–4] have brought increasingly more attention...
We demonstrate the record total capacity of 69.1 Tb/s with a spectral efficiency of 6.4 b/s/Hz by employing 21.4-Gbaud 16-QAM modulation, blind digital coherent detection, and 10.8-THz ultra-wideband amplification in the C- and extended L-bands.
By employing 111Gb/s no-guard-interval coherent OFDM and SNR maximized second-order distributed Raman amplification in the extended L-band, we demonstrate the record capacity-distance product of 84.3Petabit/s.km (13.5 Tb/stimes6,248 km), and also 1 Tb/s transmission over 9,612 km.
We propose two-stage overlap frequency domain equalization (OFDE) to compensate chromatic dispersion and polarization mode dispersion in practical long-haul optical systems. This paper evaluates the performance of 25-Gb/s coherent optical single-carrier transmission using two-stage OFDE.
Optical properties such as optical absorption, photoluminescence (PL), radiophotoluminescence (RPL) and excitation spectrum for RPL in Ag+-activated phosphor glass which is now using as individual radiation dosemeter, are estimated and the emission and excitation mechanism are discussed in this paper, because the emission mechanism of RPL in Ag+-activated phosphor glass was not well understood. The...
Online OTDR monitoring in a novel online remotely-pumped EDF/distributed Raman hybrid inline amplifier scheme is demonstrated. Using the proposed directional bypass configuration in this scheme realizes online monitoring without transmission impairment.
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