Results 11 to 20 of about 1,807,617 (309)
Optical Performance Monitoring Method Based on Fine-grained Constellation Diagram Recognition [PDF]
Jisuanji kexue, 2023 In optic fiber communication,traditional optical performance monitoring(OPM) mainly relies on analyzing the time-frequency domain information of the signal.However,conventional methods cannot complete multi-task joint monitoring,so they are less flexible.
CHEN Jinjie, HE Chao, XIAO Xiao, LEI Yinjie
doaj +1 more source
Sensors, 2021 In this paper, asynchronous complex histogram (ACH)-based multi-task artificial neural networks (MT-ANNs), are proposed to realize modulation format identification (MFI), optical signal-to-noise ratio (OSNR) estimation and fiber nonlinear (NL) noise ...
Shuailong Yang +6 more
doaj +1 more source
Optical Performance Monitoring in Mode Division Multiplexed Optical Networks
Journal of Lightwave Technology, 2021 This article considers, for the first time, optical performance monitoring (OPM) in few mode fiber (FMF)-based optical networks. 1-D features vector, extracted by projecting a 2-D asynchronous in-phase quadrature histogram (IQH), and the 2D IQH are ...
W. Saif +3 more
semanticscholar +1 more source
Linear Regression vs. Deep Learning for Signal Quality Monitoring in Coherent Optical Systems
IEEE Photonics Journal, 2022 Error vector magnitude (EVM) is a metric for assessing the quality of m-ary quadrature amplitude modulation (mQAM) signals. Recently proposed deep learning techniques, e.g., feedforward neural networks (FFNNs) -based EVM estimation scheme leverage fast ...
Yuchuan Fan +11 more
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Link State Aware Dynamic Routing and Spectrum Allocation Strategy in Elastic Optical Networks
IEEE Access, 2020 Compared with traditional wavelength division optical network, elastic optical network (EON) divides the network spectrum into smaller spectrum slots to improve the spectrum utilization, but the high-quality spectrum division also complicates the routing
Yang Zhou, Qiang Sun, Siyu Lin
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IEEE Photonics Journal, 2023 The exponentially growing demand for high-speed data necessitates more complex and versatile networks. Optimization and reliability assurance of such high-complexity networks is getting increasingly important.
Lars E. Kruse +3 more
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Journal of Applied Clinical Medical Physics, Volume 23, Issue 12, December 2022., 2022 Abstract Positron emission tomography with x‐ray computed tomography (PET/CT) is increasingly being utilized for radiation treatment planning (RTP). Accurate delivery of RT therefore depends on quality PET/CT data. This study covers quality control (QC) procedures required for PET/CT for diagnostic imaging and incremental QC required for RTP.
Ran Klein +7 more
wiley +1 more source
Journal of Applied Clinical Medical Physics, Volume 23, Issue 12, December 2022., 2022 Abstract Purpose Treatment planning for head‐and‐neck (H&N) cancer, in particular oropharynx, nasopharynx, and paranasal sinus cases, at our center requires noncoplanar proton beams due to the complexity of the anatomy and target location. Targeting accuracy for all beams is carefully evaluated by using image guidance before delivering proton beam ...
Nrusingh C. Biswal +5 more
wiley +1 more source
Ultra-High Resolution Wideband on-Chip Spectrometer
IEEE Photonics Journal, 2020 Monitoring the state of the optical network is a key enabler for programmability of network functions, protocols and efficient use of the spectrum. A particular challenge is to provide the SDN-EON controller with a panoramic view of the complete state of
Mehedi Hasan +6 more
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Intelligent performance monitoring for high-speed short-reach optical networks [PDF]
, 2021 Performance monitoring approaches in 100/400/800 Gbit/s short-reach transmissions with advanced modulation formats are developed.
Wong, Kenneth K. Y. +3 more
core +1 more source