Journal ArticleDOI
Single-Mode Photonic Band Gap Guidance of Light in Air.
R.F. Cregan,Brian Joseph Mangan,Jonathan Knight,Tim A. Birks,P. St. J. Russell,Peter John Roberts,Douglas C. Allan +6 more
TLDR
The confinement of light within a hollow core (a large air hole) in a silica-air photonic crystal fiber is demonstrated and certain wavelength bands are confined and guided down the fiber.Abstract:
The confinement of light within a hollow core (a large air hole) in a silica-air photonic crystal fiber is demonstrated Only certain wavelength bands are confined and guided down the fiber, each band corresponding to the presence of a full two-dimensional band gap in the photonic crystal cladding Single-mode vacuum waveguides have a multitude of potential applications from ultrahigh-power transmission to the guiding of cold atomsread more
Citations
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Journal ArticleDOI
Photonic Crystal Fiber With an Ultrahigh Birefringence and Flattened Dispersion by Using Genetic Algorithms
TL;DR: In this paper, a high-throughput technique to design photonic crystal fiber (PCF) structures with desired properties and functionalities was developed by using a genetic algorithm, and a high birefringence and an ultra-flattened chromatic dispersion over a large wavelength range were achieved.
Journal ArticleDOI
Optical reflectance and omnidirectional bandgaps in Fibonacci quasicrystals type 1-D multilayer structures containing exponentially graded material
TL;DR: In this paper, a theoretical study of optical reflectance and reflection bands of 1-D photonic quasi-crystals (Fibonacci type arrangement) composed of exponentially graded material is presented.
Journal ArticleDOI
Materials science for nuclear detection
TL;DR: An overview of these efforts along with an introduction to the history, physics, and taxonomy of radiation detection materials can be found in this article, where the authors provide an overview of recent efforts to accelerate the discovery and development of useful new radiation detectors.
Patent
Method and instrument for microscopy
TL;DR: A microscope includes a light source that emits an illuminating light beam for illumination of a specimen, a beam splitter separating measuring light out of the illumination, and an apparatus for determining the light power level as discussed by the authors.
Journal ArticleDOI
Photonic-crystal-fiber platform for multicolor multilabel neurophotonic studies
Lyubov V. Doronina-Amitonova,Ilya V. Fedotov,Olga I. Ivashkina,Marina A. Zots,Andrei B. Fedotov,Konstantin V. Anokhin,Aleksei M. Zheltikov +6 more
TL;DR: The hollow PBGF selects those parts of the supercontinuum output of the highly nonlinear PCF that can efficiently excite the fluorescence of the biomarkers but supports no guidance within the bands, thus allowing a high-contrast detection of well-resolved responses from each type of biomarkers.
References
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Journal ArticleDOI
All-silica single-mode optical fiber with photonic crystal cladding
TL;DR: The fabrication of a new type of optical waveguide: the photonic crystal fiber that supports a single robust low-loss guided mode over a very broad spectral range of at least 458-1550 nm.
Journal ArticleDOI
Endlessly single-mode photonic crystal fiber.
TL;DR: An effective-index model confirms that an all-silica optical fiber made by embedding a central core in a two-dimensional photonic crystal with a micrometer-spaced hexagonal array of air holes can be single mode for any wavelength.
Journal ArticleDOI
Hollow metallic and dielectric waveguides for long distance optical transmission and lasers
TL;DR: In this paper, the field configurations and propagation constants of a hollow circular waveguide made of dielectric material or metal for application as an optical waveguide were determined and the increase of attenuation due to curvature of the axis was also determined.
Journal ArticleDOI
Photonic Band Gap Guidance in Optical Fibers
TL;DR: A fundamentally different type of optical waveguide structure is demonstrated, in which light is confined to the vicinity of a low-index region by a two-dimensional photonic band gap crystal.
Journal ArticleDOI
Full 2-D photonic bandgaps in silica/air structures
TL;DR: In this paper, full 2D photonic bandgaps are demonstrated for all polarisations in structures with refractive index contrast as small as that of silica and air, and a new type of optical fiber based on these structures is proposed.