Results 51 to 60 of about 1,807,617 (309)

Performance of Optical Structural Vibration Monitoring Systems in Experimental Modal Analysis

open access: yesSensors, 2021
Image-based optical vibration measurement is an attractive alternative to the conventional measurement of structural dynamics predominantly relying on accelerometry.
Maksat Kalybek   +2 more
doaj   +1 more source

Dissolved gas monitoring probe without liquid-gas separation under strong electromagnetic interference [PDF]

open access: yesarXiv, 2022
Rapid and direct monitoring of dissolved gases in liquids under strong electromagnetic interference is very important. Electronic gas sensors that can be placed into liquids are difficult to work reliably under strong electromagnetic fields. The existing optical monitoring techniques for dissolved gases all require gas-liquid separation, and are ...
arxiv  

Cross-Layer Platform for Dynamic, Energy-Efficient Optical Networks [PDF]

open access: yes, 2011
The design of the next-generation Internet infrastructure is driven by the need to sustain the massive growth in bandwidth demands. Novel, energy-efficient, optical networking technologies and architectures are required to effectively meet the stringent ...
Lai, Caroline Phooi-Mun
core   +2 more sources

Optical Performance Monitoring: A Review of Current and Future Technologies

open access: yesJournal of Lightwave Technology, 2016
Optical performance monitoring (OPM) is the estimation and acquisition of different physical parameters of transmitted signals and various components of an optical network.
Zhenhua Dong   +5 more
semanticscholar   +1 more source

Turbulence monitoring at Calern observatory with the Generalised Differential Image Motion Monitor [PDF]

open access: yes, 2020
The Generalised Differential Image Motion Monitor (GDIMM) was proposed a few years ago as a new generation instrument for turbulence monitoring. It measures integrated parameters of the optical turbulence, i.e the seeing, isoplanatic angle, scintillation index, coherence time and wavefront coherence outer scale.
arxiv   +1 more source

Photonic chip based transmitter optimization and receiver demultiplexing of a 1.28 Tbit/s OTDM signal [PDF]

open access: yes, 2010
We demonstrate chip-based Tbaud optical signal processing for all-optical performance monitoring, switching and demultiplexing based on the instantaneous Kerr nonlinearity in a dispersion-engineered As 2S 3 planar waveguide.
B. J. Eggleton   +41 more
core   +1 more source

Optical sensing in urban areas by deployed telecommunication fiber networks [PDF]

open access: yes, 2022
The telecommunication fiber network already deployed in urban areas provides an added value to the optical asset itself, allowing a smart monitoring of our cities in a large scale.
Boffi, Pierpaolo   +4 more
core   +1 more source

Frequency-Shift Monitoring of Optical Filter Based on Optical Labels over FTN-WDM Transmission Systems

open access: yesPhotonics, 2023
Optical network monitoring and soft failure identification such as optical filter shifting and filter tightening are increasingly significant for the complex and dynamic optical networks of the future.
Kaixuan Li   +5 more
doaj   +1 more source

An Overview of Machine Learning-aided Optical Performance Monitoring Techniques [PDF]

open access: yesarXiv, 2021
Future communication systems are faced with increased demand for high capacity, dynamic bandwidth, reliability and heterogeneous traffic. To meet these requirements, networks have become more complex and thus require new design methods and monitoring techniques, as they evolve towards becoming autonomous.
arxiv  

Reliable Optical Performance Monitor: The Combination of Parallel Framework and Skip Connected Generative Adversarial Network

open access: yesIEEE Access, 2020
Future optical network is developing towards highly heterogeneity and flexibility, which means that the various signals will be transmitted in the network and the optical performance monitor is more likely to encounter the signal beyond its monitoring ...
Xiaojie Fan   +5 more
doaj   +1 more source

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