Results 21 to 30 of about 1,847,375 (374)

Performance Monitoring of Hybrid All-Optical Fiber/FSO Communication Systems [PDF]

open access: goldApplied Sciences, 2023
The demand for network capacity has increased due to the introduction of new digital applications and services, which rely heavily on optical communication networks. While fiber networks serve as the optical networks’ backbone, deploying fiber in certain
Maged Abdullah Esmail
doaj   +2 more sources

Optical Performance Monitoring for Intra-LP-Mode Dispersion in Weakly-Coupled Mode-Division Multiplexed Systems [PDF]

open access: goldIEEE Photonics Journal, 2022
Weakly-coupled mode-division multiplexing (MDM) technique based on linearly-polarized (LP) modes in ultralow-modal-crosstalk few-mode fiber (FMF) has been considered as a promising candidate for capacity enhancement of next-generation optical ...
Mingqing Zuo   +8 more
doaj   +2 more sources

Feature Fusion-Based Multi-Task ConvNet for Simultaneous Optical Performance Monitoring and Bit-Rate/Modulation Format Identification [PDF]

open access: goldIEEE Access, 2019
We propose a novel feature fusion based multi-task convolutional neural network (ConvNet) for simultaneous bit-rate and modulation format identification (BR-MFI) and optical performance monitoring (OPM) in heterogeneous fiber-optic networks. The proposed
Xiaojie Fan   +8 more
openalex   +2 more sources

Micro-sized tunable liquid crystal optical filters [PDF]

open access: yes, 2017
Liquid Crystal Arrayed Microcavities (LCAM) is a new technology for ultra-narrow optical filtering (FWHM ~ 0.1 nm) that uses pico-liter volume Fabry-Perot type optical cavities filled with liquid crystal for tuning.
Atherton, David   +3 more
core   +2 more sources

Optical performance monitoring using digital coherent receivers and convolutional neural networks

open access: goldOptics Express, 2020
We experimentally demonstrate accurate modulation format identification, optical signal to noise ratio (OSNR) estimation, and bit error ratio (BER) estimation of optical signals for wavelength division multiplexed optical communication systems using ...
Hyung Joon Cho   +5 more
openalex   +2 more sources

Long-term stability of fibre-optic transmission for multi-object spectroscopy [PDF]

open access: yes, 2012
We present an analysis of the long-term stability of fibre-optic transmission properties for fibre optics in astronomy. Data from six years of operation of the AAOmega multi-object spectrograph at the Anglo-Australian Telescope is presented.
Brough, S., Cannon, R. D., Sharp, R.
core   +2 more sources

Optical performance monitoring in coherent optical OFDM systems

open access: goldOptics Express, 2007
Optical performance monitoring is an indispensable feature for optical systems and networks. In this paper, we propose the concept of optical performance monitoring through channel estimation by receiver signal processing. We show that in coherent-optical-orthogonal-frequency-division- multiplexed (CO-OFDM) systems, critical optical system parameters ...
William Shieh   +4 more
openaire   +4 more sources

Joint Three-Task Optical Performance Monitoring with High Performance and Superior Generalizability Using a Meta-Learning-Based Convolutional Neural Network-Attention Algorithm and Amplitude-Differential Phase Histograms Across WDM Transmission Scenarios

open access: goldPhotonics
Nonlinear noise power (NLNP) estimation, optical signal-to-noise ratio (OSNR) monitoring, and modulation format identification (MFI) are crucial for optical performance monitoring (OPM) in future dynamic WDM optical networks.
Di Zhang   +3 more
doaj   +2 more sources

Research on Performance Monitoring Technology for Optical Modulation Signal Generation and Transmission [PDF]

open access: hybrid
Optical modulation signal generation and transmission play a crucial role in modern optical communication systems, directly influencing the efficiency and stability of communication networks.
Liu, Dongmei, Zhang, Lei
core   +4 more sources

Optical performance monitoring for translucent/transparent optical networks

open access: yesIET Optoelectronics, 2011
A comprehensive analysis and survey of the optical performance monitoring (OPM) is provided towards the deployment of translucent/transparent optical networks. OPM applications and technologies are reviewed for the different stages of the optical network life cycle: planning and provisioning, impairment mitigations, maintenance and failure location ...
David Dahan   +4 more
openaire   +3 more sources

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