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
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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
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Journal ArticleDOI
5-tube hollow-core anti-resonant fiber with ultralow loss and single mode
Xingtao Zhao,Xuanrui Wu,Xiaobo Lan,Jie Luo,Lei Zhang,Peng Li,Jingliang Xiang,Wenbo Ma,Shutao Wang +8 more
TL;DR: In this article, a flat glass bar is added between the nested tubes of hollow-core nested anti-resonant nodeless fiber (1-bar NANF) to realize the ultra-low loss, wide bandwidth and single-mode transmission by adjusting cladding tube parameters.
Journal ArticleDOI
Anti-Stokes generation in guided modes of photonic-crystal fibers modified with an array of nanoholes
Stanislav O. Konorov,Denis Akimov,A. A. Ivanov,Michael V. Alfimov,Andrei B. Fedotov,D. A. Sidorov-Biryukov,Leonid A. Melnikov,A. V. Shcherbakov,Ignac Bugar,Dusan Chorvat,Frantisek Uherek,Aleksei M. Zheltikov +11 more
TL;DR: In this paper, periodic arrays of air holes with diameters ranging from about 80 nm up to 400 nm were used to modify intensity profiles of guided modes in photonic-crystal fibers.
Patent
Ring photoni crystal fibers
TL;DR: In this article, a fiber optic waveguide with a core region and a cladding region surrounding the core region is described, where the core is formed from a high index material and the cladding regions are formed from materials producing an effective refractive index lower than the core regions.
Patent
Methods for tissue analysis
TL;DR: In this article, the authors proposed a method and system to optically analyze samples such as tissue based on speckle patterns of microscopic motion, such as Brownian motion, which relates to methods and systems for optically analyzing samples.
Patent
System for efficient coupling to photonic crystal waveguides
TL;DR: In this article, an optical coupler having a dielectric mirror or Gaussian beam mirror is used to efficiently couple optical signals to photonic crystal waveguides in an optical coupling system.
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.