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7620283 |
Optical device using a hollow-core photonic bandgap fiber
An optical device includes a hollow-core photonic-bandgap fiber, wherein at least a portion of the hollow-core photonic-bandgap fiber has a longitudinal axis and is twisted about the longitudinal...
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7620279 |
Polyurethane light guides
A light guide ( 1 ) formed from an unclad flexible polyurethane fiber produces significant side scattering ( 2 ) over distances of up to several meters. The polyurethane fiber is in the form of a...
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7609929 |
Surface emitting device and method for fabricating the same
A surface emitting device using a photonic crystal includes a two-dimensional slab type photonic crystal structure including a first dielectric layer and a second dielectric layer formed on top of...
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7609928 |
Method of connecting optical fibers
A method of connecting a holey fiber to an optical fiber includes fusion splicing an end surface of the holey fiber and an end surface of the optical fiber thereby forming a joint section; and...
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7603014 |
Method for the manufacture of optical fibers and improved optical fibers
The present invention is directed to a universal channel dispersion compensating fiber (CDCF) for WDM channel compensation that provides essentially zero dispersion slope over the wide wavelength...
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7593611 |
Photonic band gap fiber and method of producing the same
A photonic band gap fiber is provided having multiple air holes in a silica portion extending in the longitudinal direction of the fiber. The fiber includes a cladding containing an air hole...
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7590324 |
Double-clad optical fibers and devices with double-clad optical fibers
A double-clad optical fiber includes a core, an inner cladding and an outer cladding of silica-based glass. The core may have a radius of less than about 5 μm, a first index of refraction n 1 and...
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7590323 |
Optical fibre with high numerical aperture, method of its production, and use thereof
An article comprising an optical fiber, the fiber comprising at least one core surrounded by a first outer cladding region, the first outer cladding region being surrounded by a second outer...
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7590319 |
Preform for plastic optical material, production method thereof, optical coupling method of plastic optical fiber and connector used for optical coupling
A POF includes an inner core having a refractive index distribution and an outer core provided on periphery of the inner core. A ratio Ra/Rb of an outer diameter of the inner core to the outer core...
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7577330 |
Connectorized nano-engineered optical fibers and methods of forming same
Connectorized nano-engineered optical fibers and method for forming them are disclosed. The methods include heating a mid-span bare fiber portion of the nano-engineered fiber to collapse the...
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7577320 |
Low loss lateral optical waveguide intersections
A geometrically shaped optical waveguide crossing or intersection with minimal transmission loss is described. A symmetrically tapered waveguide intersection is used to minimize loss in the...
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7574076 |
Apparatus for optically-based sorting within liquid core waveguides
The present invention is related to an apparatus for the sorting of particles in a fluid medium flowing within a liquid-core waveguide, by combining customized light intensity patterns formed...
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7567742 |
Holey optical fiber with random pattern of holes and method for making same
A random array of holes is created in an optical fiber by gas generated during fiber drawing. The gas forms bubbles which are drawn into long, microscopic holes. The gas is created by a gas...
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7565050 |
Light pipe having an improved structure of prisms
The present invention is directed to a light pipe having an improved structure of prisms. According to one embodiment of the present invention, a hollow light pipe comprises an inner-surface...
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7555187 |
Large effective area fiber
An optical fiber according to an embodiment of the present invention comprises: a glass core extending from a centerline to a radius R 1 wherein R 1 is greater than about 5 μm; a glass cladding...
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7555185 |
Microchannel plate with segmented mounting pads
A microchannel plate and a method of making same are disclosed. The microchannel plate has an active area and at least one solid glass pad. The active area has a plurality of microchannels formed...
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7551824 |
Extended triangular lattice type photonic bandgap fiber
An extended triangular lattice type photonic bandgap fiber, includes a cladding and a capillary core, the cladding having a plurality of holes disposed within a silica glass portion in a...
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7551819 |
Multiple-core photonic-bandgap fiber with coupling between the cores
An optical coupler includes a first optical port, a second optical port, a third optical port, and a fourth optical port. The optical coupler further includes a photonic-bandgap fiber having a...
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7548680 |
Fiber optic local convergence points for multiple dwelling units
There are provided fiber optic local convergence points (“LCPs”) adapted for use with multiple dwelling units (“MDUs”) that facilitate relatively easy installation and/or optical...
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7542645 |
Airline optical fiber with reduced multipath interference and methods of forming same
An airline (AL) optical fiber (“AL fiber”) that has an AL region with airlines, with the AL region arranged relative to the fiber core so as to make the fiber bend insensitive. The AL region is...
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7539382 |
Hermetically sealed optical fibre with voids or holes, method of its production, and its use
An optical fiber having an axial direction and a cross section perpendicular to the axial direction, the optical fiber having a first light guiding fiber portion with a cladding region with a...
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7539363 |
Fiber optic probe for detecting the presence or absence of one or more substances within a medium
A fiber optic probe for capable of simultaneously enhancing fluorescent emission collection and reducing stray excitation light noise levels while detecting the presence or absence of one or more...
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7539361 |
Fiber optic device for measuring a parameter of interest
An optical fiber ( 100 ) utilized as a sensor for measuring a parameter of interest 122 such as temperature, strain, photonic energy intensity, electric field intensity and magnetic field...
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7532798 |
Optical waveguide
An elongate waveguide for guiding light including a core having an elongate region of relatively low refractive index; a microstructured region around the core comprising elongate regions of...
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7532797 |
Optical fiber
The present invention relates to an optical fiber for light pulse expansion in which the ratio (β 3 /β 2 ) of the third derivative β 3 to the second derivative β 2 is negative, the absolute...
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7532384 |
π-Phase shift device for light
A phase shifter includes at least one photonic crystal structure having alternating high and low index dielectric layers. At least two defect structures are positioned between said photonic crystal...
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7529453 |
Optical fiber and optical transmission medium
An optical fiber includes a core region and a cladding region. The cladding region includes a first cladding region on outer circumference of the core region, which includes a main-medium region...
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7529452 |
Method for manufacturing single mode optical fiber having low polarization mode dispersion
A method for manufacturing a single mode optical fiber with a reduced PMD (Polarization Mode Dispersion), by drawing an optical fiber preform composed of a core and a clad surrounding the core,...
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7526169 |
Low bend loss quasi-single-mode optical fiber and optical fiber line
Quasi-single mode optical waveguide fibers are disclosed that are bend resistant and capable of providing single mode transmission, for example at wavelengths greater than 1260 nm when the...
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7526166 |
High numerical aperture fiber
An optical fiber comprising: a silica based core having a first index of refraction n 1 ; and at least one silica based cladding surrounding the core, the at least one silica based cladding...
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7526165 |
Optical coupler devices, methods of their production and use
The present invention relates in general to coupling of light from one or more input waveguides to an output waveguide or output section of a waveguide having other physical dimensions and/or...
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7526148 |
High-sensitivity fiber-compatible optical acoustic sensor
An acoustic sensor includes at least one photonic crystal structure having at least one optical resonance with a resonance frequency and a resonance lineshape. The acoustic sensor further includes...
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7519256 |
Method for making an optical fiber preform via internal vapor deposition
The present invention relates to a method for manufacturing an optical preform by employing an internal vapor deposition process. The method uses an energy source and a substrate tube, wherein the...
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7512299 |
Fiber optic cable systems and methods incorporating a luminescent compound-containing layer to identify cracks
Fiber optic cable systems and methods incorporating a luminescent compound-containing layer to identify cracks. Exemplary embodiments include a fiber optic cable apparatus including a core for...
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7508848 |
Method and configurations in achieving high energy operation for photonic band gap (PGB) fiber with end caps
A fiber Chirped Pulse Amplification (CPA) laser system includes a photonics band gap (PBG) fiber to function as a compressor. The PBG fiber is spliced with a fiber end cap that has an core expander...
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7505660 |
Microstructured transmission optical fiber
Microstructured optical fiber for single-moded transmission of optical signals, the optical fiber including a core region and a cladding region, the cladding region including an annular...
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7505653 |
Encapsulated photonic crystal structures
Photonic crystal structures having a plurality of air columns and coating such structures to provide structures with improved performance are described herein. The coating includes a material that...
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7502541 |
Resonator, light emitting device, and wavelength conversion device
A resonator is provided which is produced by a defect formed in a three-dimensional photonic crystal. The three-dimensional photonic crystal can include layers containing a plurality of columnar...
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7499144 |
Apparatus for injecting liquid crystal into hollow fiber and method thereof
Provided are an apparatus and a method for injecting liquid crystal into a hollow optic fiber. The apparatus includes: a first holder and a second holder each of which has a fluid passage for...
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7496260 |
Ultra high numerical aperture optical fibers
Various embodiments described include optical fiber designs and fabrication processes for ultra high numerical aperture optical fibers (UHNAF) having a numerical aperture (NA) of about 1. Various...
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7489848 |
Optical fiber with a core ring
An optical fiber includes a cladding with a material having a first refractive index and a pattern of regions formed therein. Each of the regions has a second refractive index lower than the first...
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7489847 |
Optical fiber with tunable birefringence using pressurized liquid capillaries
A single-mode optical fiber segment incorporating liquid-filled holes parallel to the core that are sealed at each end. Heating the liquid produces stress in the fiber and thereby increases the...
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7489846 |
Photonic crystal sensors
Photonic crystal sensors may be created from two and three dimensional photonic crystals by introducing defects. The localization of the optical field in the defect region affords the ability to...
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7483615 |
Method of changing the refractive index in a region of a core of a photonic crystal fiber using a laser
Fiber Bragg gratings were written in pure silica photonic crystal fibers and photonic crystal fiber tapers with 125 fs, 800 nm IR radiation. High reflectivites were achieved with short exposure...
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7483610 |
Optical fiber having reduced defect density
An optical fiber comprising a multimode glass core having a diameter of at least 250 microns and an index of refraction and a polymer cladding having a thickness and contactingly surrounding a...
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7477821 |
Sealing composition and production method of optical fiber having air holes in the inside using the composition
A sealing composition for a photonic crystal fiber which comprises a compound represented by the following general formula (I), a compound represented by the following general formula (II) and a...
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7477819 |
Two-dimensional photonic crystal
A two-dimensional photonic crystal, wherein on a plane in which four adjoining unit lattices L are arranged so as to have one angle in common with the unit lattice L being a rectangle whose shorter...
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7477809 |
Photonic guiding device
A photonic guiding device and methods of making and using are disclosed. The photonic guiding device comprises a large core hollow waveguide configured to interconnect electronic circuitry on a...
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7469089 |
Light receiving apparatus
A light receiving apparatus connects light to a light receiving device through a tube-type waveguide for making uniform the light intensity distribution of light. The light receiving apparatus is...
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7463806 |
Methods of generating and transporting short wavelength radiation and apparati used therein
The present invention provides methods of generating short wavelength radiation, methods of transporting short wavelength radiation, and apparati used in these methods. One embodiment of the...
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