Results 71 to 80 of about 144,214 (212)

NUMERICAL ANALYSIS OF NON-REFLECTION BOUNDARY SIMULATION METHOD FOR RADIATION ACOUSTIC FIELD

Jixie qiangdu, 2019
Boundary condition is an important issue in acoustic calculations, and free acoustic field is often simulated by non-reflection boundary in acoustic calculations.
LI LiJun, LIU YiRan, SUN FengShan
doaj  

Using Finite Element and Eigenmode Expansion Methods to Investigate the Periodic and Spectral Characteristic of Superstructure Fiber Bragg Gratings

Sensors, 2016
In this study, a numerical simulation method was employed to investigate and analyze superstructure fiber Bragg gratings (SFBGs) with five duty cycles (50%, 33.33%, 14.28%, 12.5%, and 10%). This study focuses on demonstrating the relevance between design
Yue-Jing He, Wei-Chih Hung, Zhe-Ping Lai
doaj   +1 more source

Constructing a partially transparent computational boundary for UPPE using leaky modes [PDF]

, 2019
In this paper we introduce a method for creating a transparent computational boundary for the simulation of unidirectional propagation of optical beams and pulses using leaky modes. The key element of the method is the introduction of an artificial-index
Brändas E., David Juhasz, Per Kristen Jakobsen   +2 more
core   +2 more sources

Unusual nanostructures of "lattice matched" InP on AlInAs [PDF]

, 2014
We show that the morphology of the initial monolayers of InP on Al0.48In0.52As grown by metalorganic vapor-phase epitaxy does not follow the expected layer-by-layer growth mode of lattice-matched systems, but instead develops a number of low-dimensional ...
Dimastrodonato, V., Gocalinska, A., Joyce, B. A., Juska, G., Manganaro, M., Pelucchi, E., Thomas, K., Vvedensky, D. D., Zhang, J.   +8 more
core   +2 more sources

Perfectly Matched Absorbing Layers for the Paraxial Equations [PDF]

Journal of Computational Physics, 1997
zbMATH Open Web Interface contents unavailable due to conflicting licenses.
openaire   +1 more source

Investigation of gas sensor based on differential optical absorption spectroscopy using photonic crystal fiber

Alexandria Engineering Journal, 2020
This study presented a novel shape photonic crystal fiber based gas sensor for the first time. Perfectly circular shape air hole are arranged to form core and cladding region.
Bikash Kumar Paul, Kawsar Ahmed, Vigneswaran Dhasarathan, Fahad Ahmad Al-Zahrani, Mst. Nargis Aktar, Muhammad Shahin Uddin, Arafa H. Aly   +6 more
doaj   +1 more source

Advanced Finite Element Method for Nano-Resonators

, 2006
Miniaturized optical resonators with spatial dimensions of the order of the wavelength of the trapped light offer prospects for a variety of new applications like quantum processing or construction of meta-materials. Light propagation in these structures
Burger, S., Kettner, B., Schmidt, F., Zschiedrich, L.   +3 more
core   +2 more sources

Efficient computation of TM- and TE-polarized leaky modes in multilayered circular waveguides [PDF]

, 2010
In combination with the perfectly matched layer (PML)-paradigm, eigenmode expansion techniques have become increasingly important in the analysis and design of cylindrical and planar waveguides for photonics applications.
De Zutter, Daniël, Rogier, Hendrik, Vande Ginste, Dries   +2 more
core   +2 more sources

Perfectly matched layers in negative index metamaterials and plasmas [PDF]

ESAIM: Proceedings and Surveys, 2015
The authors study mathematically the stability problem for waves propagating in dispersive media with perfectly matched layers. Taking into account backscattered waves, they propose a new method to remove instabilities occurring in the standard approach and apply the method in two numerical examples related to a negative index material (the Drude model)
Bécache, Eliane, Joly, Patrick, Kachanovska, Maryna, Vinoles, Valentin   +3 more
openaire   +2 more sources

Higher-Order Matrix Exponential Perfectly Matched Layer Scheme With Sub-Gridding Technique Based on the Factorization Approximate Crank–Nicolson Algorithm

IEEE Open Journal of Antennas and Propagation
Although finite difference time-domain (FDTD) algorithms are potentially applicable to broadband wave propagation and radiation problems, various problems related to the absorbing boundary condition and complex structural meshing limit the accuracy of ...
Weikang Si, Hao Lei, Haolin Jiang, Yongjun Xie, Weilong Wang, Peiyu Wu   +5 more
doaj   +1 more source