photonic crystal

(redirected from Photonic bandgap)
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photonic crystal

[fə‚tän·ik ′krist·əl]
(optics)
A macroscopic, periodic dielectric structure that possesses spectral gaps (stop bands) for electromagnetic waves, in analogy with the energy bands and gaps in regular semiconductors. Also known as photonic band-gap material.

photonic crystal

A nanostructured array of holes used as an optical semiconductor. Just as electronic bandgaps prevent electrons from passing through, photonic crystals create photonic bandgaps that confine light. This technology increases the efficiency in optical fibers and allow microscopic lasers to be built. It is also expected to be used in the construction of photonic circuits that can stand-alone or be integrated into semiconductor circuits. See bandgap.
References in periodicals archive ?
Skorobogatiy, "Resonant Bio-Chemical Sensors Based on Photonic Bandgap Waveguides and Fibers," in Optical Guided-Wave Chemical and Biosensors, M.
Itoh, "A Novel TEM Waveguide Using Uniplanar Compact Photonic Bandgap (UC-PBG) Structure," IEEE Transactions on Microwave Theory and Techniques, Vol.
Petruzzelli, "Active InGaAsP/InP photonic bandgap waveguides for wavelength-selective switching," IEEE Journal of Quantum Electronics, Vol.
Katehi, "Microwave and millimeter-wave propagation in photonic bandgap structures," IEEE AP-S/URSI Symp.
An international group of computer and electrical engineers discuss the integrated photonic circuit, silicon photonic and photonic bandgap waveguides, mechanisms for optical modulation in silicon, silicon-based light sources, optical detection technologies, passive devices, photonic and electronic integration approaches, and applications in communications and sensors.
Introducing periodic perturbations such as dielectric rods, holes and patterns in waveguides and PCB substrates forms photonic bandgap (PBG) materials.
Another self-assembly synthetic strategy utilized by the group involves colloidal crystal templating of silicon photonic crystals for optical telecommunications first described in their paper 'Self-Assembly of a Silicon Photonic Bandgap Material with a Complete Three-Dimensional Gap at 1.
Engineered structures such as superlattices, nanolaminates, nanotubes, nanocomposites, smart materials, photonic bandgap materials, metamaterials, molecularly doped polymers and structured materials all have the capacity to expand and increase the functionality of thin films and coatings used in a variety of applications and provide new applications.
Imada, "Trapping and emission of photons by a single defect in a photonic bandgap structure," Nature, Vol.
Qian, "Novel 2-D photonic bandgap structure for microstrip lines," IEEE Microwave and Guided Wave Letter, Vol.
Ojha, "Enhancement of omnidirectional total-reflection wavelength ranges by using one-dimensional ternary photonic bandgap material," J.
The 48 papers, including the full texts of poster papers, report findings in the areas of non-linear optical materials, organometallic optical materials, plasmonics, electro-optic and electronic materials, organic and hybrid light-emitting devices, nanocomposite optical materials, linear and non-linear optical properties of organic and composite materials, electrical and optical properties of organic and hybrid light-emitting devices, and organic photonic bandgap structures.