PatentDOI
Photonic crystal fibres
Philip St. J. Russell,Tim A. Birks,Jonathan Knight +2 more
- Vol. 424, Iss: 6950, pp 847-851
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TLDR
In this paper, the optical properties of a photonic crystal fiber including a plurality of longitudinal holes are altered by virtue of the change in cross-sectional area of holes in that region.Abstract:
A photonic crystal fibre including a plurality of longitudinal holes (220), in which at least some of the holes have a different cross-sectional area in a first region (200) of the fibre, that region having been heat-treated after fabrication of the fibre, from their cross-sectional area in a second region of the fibre (190), wherein the optical properties of the fibre in the heat-treated region (200) are altered by virture of the change in cross-sectional area of holes (230) in that region (200).read more
Citations
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Journal ArticleDOI
Supercontinuum generation in square photonic crystal fiber with nearly zero ultra-flattened chromatic dispersion and fabrication tolerance analysis
TL;DR: In this paper, a simple index-guiding square photonic crystal fiber (SPCF) where the core is surrounded by air holes with two different diameters is presented, and the proposed design is simulated through an efficient full-vector modal solver based on the finite difference method with anisotropic perfectly matched layers absorbing boundary condition.
Journal ArticleDOI
Effective area limit of large-mode-area solid-core photonic bandgap fibers for fiber laser applications
TL;DR: In this paper, the bending characteristics of solid-core photonic bandgap fibers (SC-PBGFs) aiming to achieve large mode area (LMA) and effectively single-mode operation with a practically allowable bending radius for high-power Yb-doped fiber lasers and amplifiers were investigated.
Journal ArticleDOI
Spectral characteristics and bend response of Bragg gratings inscribed in all-solid bandgap fibers.
TL;DR: It is demonstrated that only those supermodes with certain phase relationships and symmetric mode field profiles are responsible for the supermode resonances in the FBG.
Journal ArticleDOI
Ionization-induced blueshift of high-peak-power guided-wave ultrashort laser pulses in hollow-core photonic-crystal fibers
TL;DR: In this article, a gas-filled hollow photonic-crystal fiber (PCF) was used for high-peak-power ultrashort light pulses guided in hollow PCFs filled with Raman-active ionizing gases.
Journal ArticleDOI
Circular gradient-diameter photonic crystal fiber with large mode area and low bending loss.
TL;DR: A silica-based sixfold circular gradient-diameter photonic crystal fiber with five rings is proposed, and the matching conditions of air hole lattices are established considering the gradient and diameter of the air holes.
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
Visible continuum generation in air–silica microstructure optical fibers with anomalous dispersion at 800 nm
TL;DR: In this article, the authors demonstrate experimentally that air-silica microstructure optical fibers can exhibit anomalous dispersion at visible wavelengths, and exploit this feature to generate an optical continuum 550 THz in width, extending from the violet to the infrared.
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
TL;DR: 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.