In-band Perturbation based OSNR Estimation [PDF]
arXiv, 2020 Perturbed spectra are modelled to estimate OSNR for a single channel amplified link. Perturbation-dependent nonlinear noise is separated from constant ASE noise using a set of propagated perturbed spectra. A least mean square fitting is used to estimate OSNR with standard deviation of 0.16 dB.
F. J. Vaquero-Caballero +8 more
arxiv +4 more sources
OsnR is an autoregulatory negative transcription factor controlling redox-dependent stress responses in Corynebacterium glutamicum [PDF]
Microbial Cell Factories, 2021 Background Corynebacterium glutamicum is used in the industrial production of amino acids and nucleotides. During the course of fermentation, C. glutamicum cells face various stresses and employ multiple regulatory genes to cope with the oxidative stress.
Haeri Jeong +2 more
doaj +2 more sources
OSNR Monitoring Using Support Vector Ordinal Regression for Digital Coherent Receivers [PDF]
IEEE Photonics Journal, 2019 An OSNR monitoring method assisted by support vector ordinal regression (SVOR) is proposed for digital coherent receivers. According to Godard's error of equalized signals obtained after polarization demultiplexing, the optical signal-to-noise ratio ...
Ming Hao +6 more
doaj +2 more sources
Sub-Nyquist Field Trial Using Time Frequency Packed DP-QPSK Super-Channel Within Fixed ITU-T Grid [PDF]
Optics Express Vol. 23, Issue 12, pp. 16196-16208 (2015), 2015 Sub-Nyquist time frequency packing technique was demonstrated for the first time in a super channel field trial transmission over long-haul distances. The technique allows a limited spectral occupancy even with low order modulation formats.
Berrettini, G. +14 more
core +2 more sources
Intelligent optical performance monitor using multi-task learning based artificial neural network [PDF]
, 2018 An intelligent optical performance monitor using multi-task learning based artificial neural network (MTL-ANN) is designed for simultaneous OSNR monitoring and modulation format identification (MFI).
Shu, * Liang +5 more
core +2 more sources
Joint Symbol Rate-Modulation Format Identification and OSNR Estimation Using Random Forest Based Ensemble Learning for Intermediate Nodes [PDF]
IEEE Photonics Journal, 2021 In this paper, a novel joint symbol rate-modulation format identification (SR-MFI) and optical signal-to-noise ratio (OSNR) estimation scheme using the low-bandwidth coherent detecting and random forest (RF)-based ensemble learning is proposed for ...
Jia Chai +5 more
doaj +2 more sources
Impact of Low-OSNR Operation on the Performance of Advanced Coherent Optical Transmission Systems [PDF]
arXiv, 2014 We find evidence that low-OSNR operation causes substantial penalty on system maximum reach due to non-linearity generated by ASE noise and due to signal-power conversion into non-linear noise. Neglecting these effects may lead to a quite substantial performance prediction error.
P. Poggiolini +5 more
arxiv +3 more sources
Simultaneous chromatic dispersion, polarization-mode-dispersion and OSNR monitoring at 40Gbit/s [PDF]
, 2008 A novel method for independent and simultaneous monitoring of chromatic dispersion ( CD), first-order PMD and OSNR in 40Gbit/s systems is proposed and demonstrated.
Baker-Meflah, L +3 more
core +2 more sources
Two-photon-absorption-based OSNR monitor for NRZ-PSK transmission systems [PDF]
, 2010 A two-photon absorption microcavity-based technique for monitoring in-band optical signal-to-noise ratio (OSNR) in nonreturn-to-zero phase-shift-keying systems is presented.
Anandarajah, Prince M. +10 more
core +3 more sources
Neural Network Training for OSNR Estimation -- From Prototype to Product [PDF]
arXiv, 2020 A method for in-service OSNR measurement with a coherent transceiver is presented and experimentally verified. A neural network is employed to identify and remove the nonlinear noise contribution to the estimated OSNR.
Maurice OaSullivan +8 more
arxiv +5 more sources