نتایج جستجو برای: dimensional photonic crystals

تعداد نتایج: 467549  

2010
Marian Florescu Salvatore Torquato Paul J. Steinhardt

Related Articles Interplay of index contrast with periodicity in polymer photonic crystals Appl. Phys. Lett. 99, 261913 (2011) Off-resonant coupling between a single quantum dot and a nanobeam photonic crystal cavity Appl. Phys. Lett. 99, 251907 (2011) Phase-locking regimes of photonic crystal nanocavity laser arrays Appl. Phys. Lett. 99, 251104 (2011) Field confinement and quality factor of th...

1997
Chuan C. Cheng Axel Scherer Rong-Chung Tyan Yeshayahu Fainman Eli Yablonovitch

We have developed new methods for the fabrication of high quality two-dimensional ~2D! and three-dimensional ~3D! photonic crystals. These techniques involve anisotropic etching and steam oxidation of AlAs mask layers. We have made manufacturable 2D photonic crystals with high aspect ratios for use as micropolarizers and have measured extinction ratios larger than 800 to 1 between TE and TM mod...

1998
Alex Figotin Yuri A. Godin Ilia Vitebsky

We call a photonic crystal tunable if its spectrum can be altered by an external electric or magnetic field. One of the two constitutive components of the proposed periodic composite structure has either electric permittivity or magnetic permeability dependent on the external electric or magnetic field. Consequently, the electromagnetic spectrum of the photonic crystal can be altered over a wid...

Background and Objectives: Recently, photonic crystals have been considered as the basic structures for the realization of various optical devices for high speed optical communication. Methods: In this research, two dimensional photonic crystals are used for designing all optical logic gates. A photonic crystal structure with a triangular lattice is proposed for making NAND, XNOR, and OR optica...

1996
C. C. Cheng

We describe the fabrication of three-dimensional photonic crystals using a reproducible and reliable procedure consisting of electron beam lithography followed by a sequence of dry etching steps. Careful fabrication has enabled us to define photonic crystals with 280 nm holes defined with 350 nm center to center spacings in GaAsP and GaAs epilayers. We construct these photonic crystals by trans...

2003
C. Jamois R. B. Wehrspohn L. C. Andreani C. Hermann O. Hess U. Gösele

A review of the properties of silicon-based two-dimensional (2D) photonic crystals is given, essentially infinite 2D photonic crystals made from macroporous silicon and photonic crystal slabs based on silicon-on-insulator basis. We discuss the bulk photonic crystal properties with particular attention to the light cone and its impact on the band structure. The application for wave guiding is di...

Journal: :Angewandte Chemie 2011
Agustín Mihi Chunjie Zhang Paul V Braun

Photonic crystals are materials that exhibit periodicities in their refractive index on the order of the wavelength of light, and thus provide many interesting possibilities for “photon management”. Applications for photonic crystals include light bending, inhibition of spontaneous emission, and amplified photon absorption or emission. A major limitation, however, for the incorporation of photo...

2001
M. Patrini M. Galli F. Marabelli M. Agio L. C. Andreani D. Peyrade Yong Chen

One– and two-dimensional photonic crystals are obtained by electron beam lithography and reactive ion etching on silicon-on-insulator waveguides. Variable-angle reflectance is measured and calculated in the 0.2–2-eV energy range, giving evidence of the quasi-guided modes of the photonic structure. Photonic bands in the one-dimensional case are determined and compare very well to those calculate...

Journal: :Journal of the Optical Society of America. A, Optics, image science, and vision 2010
Arya Fallahi Christian Hafner

A new boundary condition is introduced to calculate the effective impedance matrix of semi-infinite periodic structures such as photonic crystals and metamaterials, which leads to a reduction of the solution space. The obtained effective impedance matrix allows one to relate a matrix to a PC, which includes all of its properties in terms of reflection from its interface. For one-dimensional pho...

Journal: :Optics express 2007
F Riboli P Bettotti L Pavesi

We investigate the photonic properties of one dimensional photonic crystals realized on Silicon On Insulator channel slot-waveguide to engineer slow light effects. Various geometries of the photonic pattern have been characterized and their photonic band-gap structure analyzed. The optimal geometry has been further used to realize a coupled resonator optical waveguide (CROW). A first optimizati...

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