Results 21 to 30 of about 137,373 (293)

Refractive index sensing of gases based on a one-dimensional photonic crystal nanocavity [PDF]

open access: yesJournal of Sensors and Sensor Systems, 2015
Silicon photonic crystal sensors have become very attractive for various optical sensing applications. Using silicon as a material platform provides the ability to fabricate sensors with other photonic devices on a single chip.
M. Mohebbi
doaj   +1 more source

Research and Application Progress of Inverse Opal Photonic Crystals in Photocatalysis

open access: yesInorganics, 2023
In order to solve the problem of low photocatalytic efficiency in photocatalytic products, researchers proposed a method to use inverse opal photonic crystal structure in photocatalytic materials.
Hongming Xiang   +4 more
doaj   +1 more source

Tunability and enlargement of omnidirectional transmission frequency range in a photonic heterostructure containing Dirac semimetal

open access: yesAIP Advances, 2018
In this study, We theoretically realized the enlargement of the photonic crystal band gap by a photonic heterostructure containing Dirac semimetal layer. At the same time, since the dielectric constant of the Dirac semimetal changes with its Fermi level,
Yunkun Zhao   +3 more
doaj   +1 more source

Continuous-wave operation of electrically pumped, single-mode, edge-emitting photonic crystal Bragg lasers [PDF]

open access: yes, 2007
The authors demonstrate an electrically pumped, single-mode, large-area, edge-emitting InGaAsP/InP two dimensional photonic crystal Bragg laser operating in continuous-wave condition.
DeRose, Guy A.   +4 more
core   +1 more source

Modal reflectivity in finite-depth two-dimensional photonic-crystal microcavities [PDF]

open access: yes, 1998
We present finite-difference time-domain calculations of the Q factor for an optical microcavity defined by a slab waveguide and two-dimensional photonic-crystal end mirrors.
D'Urso, Brian   +5 more
core   +1 more source

All-fiber lasers through photonic crystal fibers

open access: yesNanophotonics, 2013
A review on all-fiber lasers based on photonic crystal fibers is presented. Photonic crystal fibers present improved features beyond what conventional optical fibers can offer.
Pinto Ana M.R., Lopez-Amo Manuel
doaj   +1 more source

Synthesis and properties of SiO2 photonic crystals modified by DNA

open access: yesБіофізичний вісник, 2020
Background: Photonic crystals are structures characterized by periodic modulations of the refractive index with a period commensurate with the wavelength.
M. Olenchuk   +4 more
doaj   +1 more source

Annular photonic crystals

open access: yesOptics Express, 2005
A new type of two-dimensional photonic-crystal (PC) structure called annular PC composed of a dielectric-rod and a circular-air-hole array in a square or triangular lattice such that a dielectric rod is centered within each air hole is studied. The dielectric rods within the air holes greatly modify the dispersion diagram of the photonic crystal ...
Hamza, Kurt, D S, Citrin
openaire   +2 more sources

Local temperature control of photonic crystal devices via micron-scale electrical heaters [PDF]

open access: yes, 2009
We demonstrate a method to locally control the temperature of photonic crystal devices via micron-scale electrical heaters. The method is used to control the resonant frequency of InAs quantum dots strongly coupled to GaAs photonic crystal resonators ...
Faraon, Andrei, Vuckovic, Jelena
core   +2 more sources

Photonic crystal fibre characterisation with the method of lines

open access: yesJournal of Telecommunications and Information Technology, 2004
Photonic crystal fibres are longitudinally uniform fibres in which in lateral directions periodic refractive index changes occur. Two basically different light guiding mechanisms occur in crystal fibres: index guiding and bandgap guiding.
Igor A. Goncharenko, Marian Marciniak
doaj   +1 more source

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