Results 41 to 50 of about 1,807,617 (309)
Optics Express, 2020 We propose and experimentally demonstrate modulation format-independent optical performance monitoring (OPM) based on a multi-task artificial neural network (MT-ANN).
Hao Zheng +6 more
semanticscholar +1 more source
All-optical differential current detection technique for unit protection applications [PDF]
, 2013 In this paper we demonstrate a novel, all-optical differential current protection scheme. By monitoring the optical power reflected from two matched hybrid fiber Bragg grating current sensors and using a simple optoelectronic threshold detector, an ...
Fusiek, Grzegorz +3 more
core +1 more source
Optical performance monitoring using digital coherent receivers and convolutional neural networks.
Optics 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
semanticscholar +1 more source
Machine Learning-Based Multifunctional Optical Spectrum Analysis Technique
IEEE Access, 2019 A machine learning (ML)-based multifunctional optical spectrum analysis technique is proposed to perform not only the conventional analysis functions but also the extended analysis functions, including center wavelength detection, optical signal-to-noise
Danshi Wang +6 more
doaj +1 more source
Performance Monitoring of Hybrid All-Optical Fiber/FSO Communication Systems
Applied 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 +1 more source
Experimental Demonstration of Linear Inter-Channel Interference Estimation Based on Neural Networks
IEEE Photonics Journal, 2023 In this paper, an algorithm for the estimation of the linear inter-channel crosstalk in a dense-WDM polarization-multiplexed 16-QAM transmission scenario is proposed and demonstrated.
A. Hraghi +4 more
doaj +1 more source
A generalized differential image motion monitor [PDF]
MNRAS 486, 915 (2019), 2019 We present the Generalised Differential Image Motion Monitor. It is a compact instrument dedicated to measure 4 parameters of the optical turbulence: seeing, isoplanatic angle, coherence time and wavefront coherence outer scale. GDIMM is based on a small telescope (28cm diameter) equipped with a 3-holes mask at its entrance pupil.
arxiv +1 more source
Pulsed laser deposition with simultaneous in situ real-time monitoring of optical spectroscopic ellipsometry and reflection high-energy electron diffraction [PDF]
Rev. Sci. Instrum. 84, 043902 (2013), 2013 We present a pulsed laser deposition (PLD) system that can monitor growth by simultaneously using in situ optical spectroscopic ellipsometry (SE) and reflection high-energy electron diffraction (RHEED). The RHEED precisely monitors the number of thin-film layers and surface structure during the deposition and the SE measures the optical spectra of the ...
arxiv +1 more source
IEEE Photonics Journal, 2012 We propose and demonstrate a chromatic dispersion (CD) monitoring technique for a nonreturn-to-zero differential phase-shift keying (NRZ-DPSK) signal generated with a Mach-Zehnder modulator at 40 Gb/s by analyzing the waveform overshoot after ...
Zhao Wu, Yu Yu, Xinliang Zhang
doaj +1 more source
Novel Wearable Optical Sensors for Vital Health Monitoring Systems—A Review
Biosensors, 2023 Wearable sensors are pioneering devices to monitor health issues that allow the constant monitoring of physical and biological parameters. The immunity towards electromagnetic interference, miniaturization, detection of nano-volumes, integration with ...
Baljinder Kaur +2 more
doaj +1 more source