Results 21 to 30 of about 10,123,200 (347)

Low Loss Tapered Polysilicon Core Fibers [PDF]

Conference on Lasers and Electro-Optics, 2016
We have fabricated small core polysilicon waveguides by tapering bulk, as-drawn silicon optical fibers. The taper process acts to improve the local crystallinity of the core, resulting in a significant reduction in the material loss.
Suhailin, Fariza, Shen, Li, Healy, Noel, Xiao, Limin, Jones, Maxwell, Hawkins, Thomas, Ballato, John, Gibson, Ursula J., Peacock, Anna C.   +8 more
openaire   +2 more sources

Low Loss Antiresonant Hollow Core Fibres [PDF]

Advanced Photonics, 2011
We study the loss mechanisms in novel antiresonant hollow-core fibres and demonstrate the importance of optimising the air-cladding thickness and reducing the node size. Based on these rules we fabricate fibres with wide-bandwidth and low-loss.
Poletti, F., Hayes, J.R., Richardson, D.J.   +2 more
openaire   +2 more sources

Co-axial dual-core resonant leaky fibre for optical amplifiers [PDF]

, 2008
We present a co-axial dual-core resonant leaky optical fibre design, in which the outer core is made highly leaky. A suitable choice of parameters can enable us to resonantly couple power from the inner core to the outer core. In a large-core fibre, such
Ajeet Kumar, Arbore M A, Bachmann P K, Bernard Dussardier, Bise R T Fini J M Yan M F, Charu Kakkar, Kumar A, Li K, Vipul Rastogi, Yeung A Chiang K S Rastogi V Chu P L Peng G D   +9 more
core   +6 more sources

Differential Inverters: A General Design Procedure Integrating a Novel Power Losses Modeling Approach for Utilized DC–DC Modules at Different Modulation Schemes

IEEE Access, 2023
Differential inverters develop the PWM of internal DC-DC modules by correlating fundamental frequency of load with high switching frequency to maintain inherent characteristic operation and achieve pure higher/lower AC output voltage with smaller size ...
Ahmed Shawky, Mokhtar Aly, Jose Rodriguez   +2 more
doaj   +1 more source

A practical approach for magnetic core-loss characterization [PDF]

, 1995
A practical approach for magnetic core-loss characterization up to a few megahertz is presented. An error analysis is for the first time performed, revealing that corrections are needed to compensate for errors introduced by the extra phase shift ...
Tan, F. Dong, Vollin, Jeff L., Ćuk, Slobodanukuk   +2 more
core   +1 more source

High Performance Planar Magnetics Based on an Unbalanced-Flux Approach

IEEE Open Journal of Power Electronics, 2023
This paper presents a new design concept to increase the efficiency and the power density of planar magnetics. In contrast to the existing magnetics, which are built using the balanced magnetic flux density design, the proposed design concept generates ...
Sobhi Barg, Souhaib Barg, Kent Bertilsson   +2 more
doaj   +1 more source

Compositional analysis of InAs-GaAs-GaSb heterostructures by low-loss electron energy loss spectroscopy [PDF]

, 2013
As an alternative to Core-Loss Electron Energy Loss Spectroscopy, Low-Loss EELS is suitable for compositional analysis of complex heterostructures, such as the InAs-GaAs-GaSb system, since in this energy range the edges corresponding to these elements ...
A G Taboada, A M Beltrán, A M Sánchez, Egerton R F, J M Ripalda, M H Gass, S I Molina, Sánchez A M, T Ben   +8 more
core   +2 more sources

Effect of Annealing Prior to Cold Rolling on the Microstructure Evolution and Energy Losses of Low-Si, Ultra-Low-C Hot-Rolled Electrical Steel

Metals, 2020
The microstructure of a low Si, ultra-low-C, hot-rolled electrical steel strip is modified by annealing at T < To, the α→γ transformation temperature.
Héctor Ortiz Rangel, Armando Salinas Rodríguez, Omar García Rincón   +2 more
doaj   +1 more source

In situ real-time analysis of alloy film composition and segregation dynamics with parallel detection reflection electron energy loss spectroscopy [PDF]

, 1997
Real-time measurements of GexSi1 – x/Si(001) composition and segregation dynamics in Sn/Si(001) in molecular beam epitaxy are demonstrated using parallel detection reflection electron energy loss spectroscopy.
Ahn, C. C., Atwater, H. A., He, G., Tambo, T., Taylor, M. E., Wong, S. S., Yoshino, H.   +6 more
core   +1 more source

Curvature-related eddy-current losses in laminated axial flux machine cores [PDF]

, 2005
In this paper we present an axiperiodic quasi-static model to evaluate the magnetic flux density distribution and power loss due to curvature related radial flux in the laminated core of axial flux machines.
Ahfock, Tony L., Hewitt, Andrew
core   +2 more sources