نتایج جستجو برای: photonic crystal

تعداد نتایج: 175283  

2013

This whitepaper gives a general overview on different concepts of photonic crystal cavities. Important figures such as the transmission, the mode volume and the quality factor are discussed. The presented information will help the reader to decide which type of photonic crystal cavities will be most suited for the application in view. A design example for a WDM channel filter is given in order ...

2011
Saeid Marjani Azam Marjani

In the present work, a new vertical cavity surface emitting laser (VCSEL) structure employing combined oxide layer and single defect photonic crystal index guiding layer has been investigated for L-band optical fiber application. The basic design goal was to obtain photonic crystal VCSEL (PhC VCSEL) with the high power, high slop efficiency and low threshold that operate at 1.55-1.6μm wavelengt...

2003
K. C. Chow S. Y. Lin S. G. Johnson J. D. Joannopoulos J. Bur

Using a two-dimensional (2D) photonic-crystal slab structure, we have demonstrated a strong 2D photonic band gap with the capability of fully controlling light in all three dimensions[1]. Our demonstration confirms the predictions [2] on the possibility of achieving 3D light control using 2D band gaps, with strong index guiding providing control in the third dimension, and raise the prospect of...

2012
Felix J. Lawrence Lindsay C. Botten Kokou B. Dossou R. C. McPhedran Martijn de Sterke

Related Articles Parametric optomechanical oscillations in two-dimensional slot-type high-Q photonic crystal cavities Appl. Phys. Lett. 100, 211908 (2012) Photonic band effect in single-layers of high refractive index spheres of different compactness J. Appl. Phys. 111, 104902 (2012) Thermo-optic switch based on transmission-dip shifting in a double-slot photonic crystal waveguide Appl. Phys. L...

2012
M. L. Liu M. J. Yun F. Xia W. J. Kong Y. Wan J. Liang W. Lv H. Y. Tan

In this paper, super-resolution imaging and negative refraction by a two-dimensional (2D) triangular lattices graded photonic crystal (GPC) were studied. The graded photonic crystal (GPC) was obtained by varying the radius in each row so that its effective refractive index changes along the transverse direction. By using Plane Wave Expansion (PWE) method and Finite-Difference Time-Domain (FDTD)...

2005
Peter T. Rakich Hideyuki Sotobayashi Juliet T. Gopinath Jason W. Sickler Chee Wei Wong Steven G. Johnson Minghao Qi Elefterios Lidorikis Henry I. Smith John D. Joannopoulos Erich P. Ippen

Supercontinuum based sources and measurement techniques are developed, enabling optical ultra-broadband studies of nano-scale photonic crystal devices and integrated photonic circuits over 1.2 – 2.0 μm wavelength range. Experiments involving 1-D periodic photonic crystal microcavity waveguides and 3-D periodic photonic crystals with embedded point defects are described. Experimental findings ar...

2010
B. SUTHAR

On the basis of Maxwell's equations and a plane wave expansion method, photonic band structure is computed for 3D chalcogenide photonic crystal with diamond lattice. The geometrical influence on the photonic bandgap is studied for three dimensional chalcogenide photonic crystal of diamond lattice for both chalcogenide spheres in air and air spheres in chalcogenide background. The air spheres in...

Journal: :journal of artificial intelligence in electrical engineering 0
jabraeil farajzadeh mir mansur ziabari

in this article, the effect of cells' radius on the behavior of wavelength switching optical filter andthe effect of the radius of the optical filters' key characteristics such as wavelength resonance onan optical filter based on photonic crystals, have been investigated. currently, the most commonapplied mechanism for designing optical filter based on photonic crystals is using twome...

Journal: :journal of sciences islamic republic of iran 0

abstract the spontaneous emission spectrum from a driven three-level atom placed inside a double-band photonic crystal has been investigated. we use the model which assumes the upper levels of the atomic transition are coupled via a classical driving field. the transition from one of the upper levels to lower level couples to the modes of the modified reservoir, and the transition from the othe...

2004
R. Buczynski

Photonic crystal fibers are a new class of optical fibers. Their artificial crystal-like microstructure results in a number of unusual properties. They can guide light not only through a well-known total internal reflection mechanism but using also photonic bandgap effect. In this paper different properties possible to obtain in photonic crystal fibers are reviewed. Fabrication and modeling met...

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