Results 71 to 80 of about 63,853 (195)

Recent advances in PBG structures

open access: yesJournal of Telecommunications and Information Technology, 2000
We propose a review of word science achievements in the extremely extended for the recent few years field of photonic band gap structures. The review concerns both theoretical and experimental investigations on PBG structures toward fabrication of the ...
Irena Yu. Vorgul, Marian Marciniak
doaj   +1 more source

Coupled-mode theory for stimulated Raman scattering in high-Q/Vm silicon photonic band gap defect cavity lasers [PDF]

open access: yes, 2006
We demonstrate the dynamics of stimulated Raman scattering in designed high-Q/Vm silicon photonic band gap nanocavities through the coupled-mode theory framework towards optically-pumped silicon lasing.
Wong, Chee Wei, Yang, Xiaodong
core   +3 more sources

Metallic Spiral Three-Dimensional Photonic Crystal with a Full Band Gap at Optical Communication Wavelengths

open access: yesIEEE Photonics Journal, 2012
The optical properties of a gold spiral photonic crystal (PC) were studied numerically and a full 3-D band gap at near infrared wavelengths was found. This band gap, ranging from 1.2 to 1.8 m in wavelength, covers all the second and third telecom windows
Po Sun, John D. Williams
doaj   +1 more source

Mapping the optical properties of slab-type two-dimensional photonic crystal waveguides

open access: yes, 2005
We report on systematic experimental mapping of the transmission properties of two-dimensional silicon-on-insulator photonic crystal waveguides for a broad range of hole radii, slab thicknesses and waveguide lengths for both TE and TM polarizations ...
Eric Dulkeith   +5 more
core   +1 more source

Photonic band gap properties of one-dimensional photonic quasicrystals containing Nematic liquid crystals

open access: yesResults in Physics, 2020
Reflectance spectra of one-dimensional periodic multilayered stacks with anisotropic defect layer built according to the Generalized Thue Morse sequence is investigated by the theoretical transfer matrix method for both polarized waves.
Y. Trabelsi   +3 more
doaj   +1 more source

Simple model of the density of states in 1D photonic crystal

open access: yes, 2010
In this paper, we present a simple, yet versatile, analytical model of one-dimensional photonic crystal (1D PC). In our theoretical model, we take into account direction of propagation and therefore do not neglect anisotropic nature of photonic crystals.
Rudziński, Adam   +2 more
core   +1 more source

Two-dimensional photonic band-gap mirrors at 850 and 980 nm [PDF]

open access: yes, 1996
Summary form only given. Photonic band-gap (PBG) crystals can be fabricated in semiconductor devices through the etching of patterns of holes in the device, resulting in a periodic dielectric structure. One of the more practical uses of photonic crystals
Cheng, C. C.   +5 more
core  

Topological classification of Chern-type insulators with the photonic Green function

open access: yes, 2018
The Chern topological numbers of a material system are traditionally written in terms of the Berry curvature which depends explicitly on the material band structure and on the Bloch eigenwaves.
Silveirinha, Mário G.
core   +1 more source

Photonic crystals and inhibition of spontaneous emission: an introduction

open access: yes, 2004
In the first part of this introductory review we outline the developments in photonic band gap materials from the physics of photonic band gap formation to the fabrication and potential applications of photonic crystals. We briefly describe the analogies
Aggelakis Dimitrios(http://users.isc.tuc.gr/~daggelakis)   +3 more
core   +2 more sources

Hollow-core photonic band gap fibers for particle acceleration

open access: yesPhysical Review Special Topics. Accelerators and Beams, 2011
Photonic band gap (PBG) dielectric fibers with hollow cores are being studied both theoretically and experimentally for use as laser driven accelerator structures. The hollow core functions as both a longitudinal waveguide for the transverse-magnetic (TM)
Robert J. Noble   +2 more
doaj   +1 more source

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