Results 11 to 20 of about 346 (50)

Second-order achromat design based on FODO cell

open access: yesPhysical Review Special Topics. Accelerators and Beams, 2011
Two dipole doglegs are widely used to translate the beam axis horizontally or vertically. Quadrupoles are placed between the two consecutive dipoles to match first-order dispersion and provide betatron focusing.
Yipeng Sun (孙一鹏)
doaj   +1 more source

Study of Fault Detection Techniques for Optical Fibers

open access: yesZanco Journal of Pure and Applied Sciences, 2019
This paper represents a review of several published papers, white papers and posted articles with a view to explain background of fault detection techniques for optical fibers. Optical fibers usually carry enormous data capacity.
Tariq A Ali, Jalal J Hamad Ameen
doaj   +1 more source

Considerations on combined-function optics for high-energy storage rings and colliders

open access: yesEPJ Techniques and Instrumentation, 2022
In a recent paper, the proposal of using combined-function optics for the arcs of the Future Circular hadron Collider (FCC–hh) was presented and discussed in detail.
M. Giovannozzi
doaj   +1 more source

Ray Optics Analysis Explanation of Beam-Splitting Condition in Fabry-Pérot Antennas

open access: yesIEEE Access, 2018
This paper presents a theoretical analysis where general and accurate formulas for the design of Fabry-Pérot antennas (FPA) are derived from a simple ray optics approach.
Etienne Perret, Raul Guzman Quiros
doaj   +1 more source

Delay-Tap-Sampling-Based Chromatic Dispersion Estimation Method With Ultra-Low Sampling Rate for Optical Fiber Communication Systems

open access: yesIEEE Access, 2020
A cost-effective chromatic dispersion (CD) estimation method is proposed, which is based on the delay-tap sampling (DTS) technique in combination with periodic training sequences (PTS). By performing equivalent sampling of PTS, DTS-based CD estimation at
Du Tang   +5 more
doaj   +1 more source

On spacetime transformation optics: temporal and spatial dispersion

open access: yesNew Journal of Physics, 2016
The electromagnetic implementation of cloaking, the hiding of objects from sight by diverting and reassembling illuminating electromagnetic fields has now been with us ten years, while the notion of hiding events is now five.
Jonathan Gratus   +3 more
doaj   +1 more source

Space-time wave packets localized in all dimensions

open access: yesNature Communications, 2022
Propagation-invariant wave packets confined in space and time can be useful for optical sensing, imaging, and nonlinear and quantum optics. Here the authors demonstrate control over the angular dispersion of optical wave packets in two-transverse ...
Murat Yessenov   +6 more
doaj   +1 more source

Unique Huygens-Fresnel electromagnetic transportation of chiral Dirac wavelet in topological photonic crystal

open access: yesNature Communications, 2023
Light propagates in various ways depending on environment, including uniform medium, surface/interface and photonic crystals, which appears ubiquitously in daily life and has been exploited for advanced optics technology.
Xing-Xiang Wang   +5 more
doaj   +1 more source

Higher-order Kerr nonlinear and dispersion effects on fiber optics

open access: yesResults in Physics, 2021
In new communication optical fiber enforcements, the nonlinear Schrödinger equations (NLSEs) have honorable description for soliton transmission characteristics.
H.G. Abdelwahed   +3 more
doaj  

Deep Neural Network Based Chromatic Dispersion Estimation With Ultra-Low Sampling Rate for Optical Fiber Communication Systems

open access: yesIEEE Access, 2019
Fast and low-cost chromatic dispersion (CD) estimation is very important for fiber link that is dynamically reconfigurable in the next-generation optical networks.
Shaojian Guo   +3 more
doaj   +1 more source

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