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7623748 |
Optical fiber unit for air blown installation
The present invention relates to an optical fiber unit for air blown installation, which includes at least one optical fiber; a buffer layer surrounding the optical fiber and made of radiation...
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7609930 |
Plastic optical fiber cable
The invention provides a plastic optical fiber cable comprising a plastic optical fiber having a core/clad structure, a light blocking coating layer provided around the plastic optical fiber, and a...
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7609921 |
Optical fiber part and laser processing machine
An optical fiber part includes an optical fiber having a main fiber, a taper fiber and a small-diameter fiber. The core diameter of the taper fiber decreases along an optical axis. Further, a...
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7593612 |
Optical fiber
A tension-absorbing cladding layer is formed around a cladding layer, with a refractive index equal to that of a center core region or higher. The center core region has a relative refractive index...
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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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7583878 |
Optical fiber, optical fiber ribbon, and optical interconnection system
An optical fiber is made of silica-based glass, and includes a core and a cladding. The optical fiber has a mode field diameter of 5.4 micrometers or larger at a wavelength of 1300 nanometers,...
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7580600 |
Free space high power fiber coupler
A waveguide receiving light which propagates through free space is configured with a coupler and delivery fiber. The coupler, including a GREEN or multimode fiber, has a protective coating and so...
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7574088 |
Optical fiber and optical fiber ribbon, and optical interconnection system
An optical fiber, made of silica-based glass, comprising a core and a cladding. The optical fiber having a mode field diameter of 6.5 μm or larger at a wavelength of 1300 nm, transmitting light...
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7570858 |
Optical fiber for pumping and method
A fiber optic cable includes at least one optic fiber; and a buoyancy modifying coating on the at least one optic fiber, the coating comprising at least one microballoon and a matrix material.
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7570856 |
Apparatus and method for an erbium-doped fiber for high peak-power applications
A method and apparatus using a gain medium in the form of a multiply clad gain fiber having an erbium-doped core. In some embodiments, aluminum and germanium are added to the silica core to make λ...
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7570853 |
Environmentally robust liquid crystal polymer coated optical fiber cable and its use in hermetic packaging
The invention relates to high-strength, abrasion-resistant optical fiber cable having a supplemental layer consisting essentially of a liquid crystal polymer (LCP) to enhance the cable's tensile...
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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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7561772 |
Organic devices having a fiber structure
A photoactive fiber is provided, as well as a method of fabricating such a fiber. The fiber has a conductive core including a first electrode. An organic layer surrounds and is electrically...
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7558456 |
Optical waveguide device
An optical waveguide device includes a lower cladding layer, a high refractive index region provided on the lower cladding layer, a pair of cores provided on the lower cladding layer on both sides...
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7551829 |
Waveguide, waveguide module, optical transmission device, and method of manufacturing waveguide
In a waveguide 10 including a substrate 1 , a lower clad 2 , an upper clad 3 , and a core 4 , the outline of a cross section perpendicular to the light propagating direction of the core 4 ...
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7551825 |
Colored optical fiber and evaluation method thereof
A colored optical fiber whose transmission loss hardly increases even in a high humidity condition or water-immersed condition is provided. The colored optical fiber according to the present...
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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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7539383 |
Buffered optical fiber and manufacturing method thereof
A buffered optical fiber having an excellent pistoning characteristic compared with a conventional one and a manufacturing method thereof are provided. The buffered optical fiber of the present...
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7519254 |
Polarization insensitive microbend fiber gratings and devices using the same
A microbend-induced fiber grating is formed from a section of optical fiber configured to exhibit “splitting” between the resonant wavelengths supported by the TE and TM components of the LP 1m...
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7502536 |
Optical fiber tape core and production method therefor
An optical fiber tape core comprises an optical fiber core assembly and a coating layer formed of silicone rubber and arranged on at least one side of the optical fiber core assembly. In the...
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7500793 |
High-pressure/high-temperature seals between glass fibers and metals, downhole optical feedthroughs containing the same, and methods of preparing such seals
A glass-to-meal seal for use in high temperature and high pressure environments is described. The glass-to-metal seals includes an optical fiber having a metallized portion, the metallized portion...
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7493000 |
Curable liquid resin optical fiber upjacket composition
The present invention provides a curable liquid resin composition which, when cured, exhibits excellent removability from an adjacent coating layer and is suitable for an optical fiber upjacket...
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7492999 |
Optical fiber and optical-fiber transmission line
An optical fiber transmits at least a signal light having a wavelength of 1550 nanometers in a fundamental propagation mode. The optical fiber has, a cutoff wavelength equal to or longer than 1550...
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7483614 |
Optical fiber and optical device using the same
There is disclosed an optical fiber wherein an absolute value of the fourth order dispersion β 4 of fourth derivative β 4 of propagation constant β with respect to angular frequency ω at a...
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7477822 |
Component with optical fiber and associated optical fiber
The invention relates to the field of components with optical fibers and of associated optical fibers. The invention relates, on the one hand, to a component with optical fiber including an at...
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7463805 |
High numerical aperture optical fiber
An optical fiber, comprising: a core with a first refractive index (n 1 ); a silica based outer cladding surrounding the core, the outer cladding having a refractive index (n), such that the core...
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7457500 |
Large-mode-area, multimode, hybrid optical fibers and devices using same
A large mode area optical fiber is configured to support multiple transverse modes of signal radiation within its core region. The fiber is a hybrid design that includes at least two axial segments...
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7455460 |
Fiber optic connector with double-clad stub fiber
A fiber optic connector having a double-clad specialty optical stub fiber with a deep index core-to-inner-cladding profile and a raised index outer-cladding profile. The double-clad optical stub...
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7450807 |
Low bend loss optical fiber with deep depressed ring
Optical waveguide fiber that is bend resistant and single moded at 1260 nm and at higher wavelengths. The optical fiber includes a core and cladding, the cladding having an annular inner region, an...
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7450806 |
Microstructured optical fibers and methods
Microstructured optical fiber and method of making. Glass soot is deposited and then consolidated under conditions which are effective to trap a portion of the consolidation gases in the glass to...
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7450805 |
Optical fiber unit for air blown installation and manufacturing method thereof
An optical fiber unit for air blown installation includes at least one optical fiber having a core layer and a clad layer, a protective layer coated on the surface of the optical fiber; and...
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7440665 |
Optical fiber
An optical fiber not only can suppress SBS but also can be produced easily. The optical fiber 1 comprises an optical core region 10 including the center axis and an optical cladding region 14 ...
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7437046 |
Optical fiber configuration for dissipating stray light
An optical transmission fiber is formed to include a relatively low-index, relatively thin outer cladding layer disposed underneath the protective polymer outer coating. Stray light propagating...
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7437042 |
Fiber coating processing and slitting for non-confined light leakage
An optical fiber and methods of processing and manufacturing an optical fiber comprising a core, a cladding and a coating covering a segment of the cladding proximate to an end of the optical fiber...
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7433566 |
Low bend loss optical fiber with high modulus coating
Optical fiber having a coating surrounding and in direct contact with the silica based cladding region of the fiber, the coating having a Young's modulus of elasticity greater than 30 MPa. The...
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7433565 |
Side-scattering light guides
The invention relates to side-scattering light guides that generally comprise a core of transparent optically homogenous material seeded with diffuser particles. The light guide also comprises an...
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7430354 |
Method and apparatus for reduction of optical coupling between pump lasers and photodetectors in optical amplifiers
In a first aspect, the present invention comprises an optical filter comprising a fiber having a core and a cladding and a light-absorbing coating applied onto a portion of the fiber cladding, the...
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7429138 |
Optical connection method and optical transmission apparatus
A plastic optical fiber ( 11 ) has a core ( 12 ) and a clad ( 13 ). The clad ( 13 ) is composed of an outer clad ( 14 ) and an inner clad ( 15 ). The refractive index in the core ( 12 ) gradually...
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7428360 |
Optical waveguide sensor and method of manufacture
An optical waveguide environmental sensor is provided that is capable of detecting a target gas or liquid in the ambient environment in an advantageously short period of time. The waveguide is...
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7421175 |
Apparatus for providing optical radiation
Apparatus for providing optical radiation, which apparatus comprises an optical fibre ( 5 ) having a core ( 3 ), a first cladding ( 1 ) and a second cladding ( 2 ), in which the first cladding ( 1...
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7415183 |
Silica based glass waveguide and optical module using the same
A silica based glass waveguide having almost the same optical characteristics as designed value and an optical module using a silica based glass waveguide having excellent optical characteristics...
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7412142 |
Optical fiber with plurality of air holes and stress rods
An optical fiber comprising: (i) a silica based passive core having a first index of refraction n 1 ; (ii) a silica based cladding surrounding the core and having a second index of refraction n 2 ,...
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7409122 |
End face structure of optical fiber, optical fiber laser, and laser processing apparatus
An end face structure of an optical fiber includes a coreless fiber fused to an emitting end face of the fiber optical fiber and a coating material disposed around at least the coreless fiber, a...
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7406238 |
Optical fiber with extended bandwidth for crimp and cleave connectors
An optical fiber includes a large graded index core of Ge doped silica for an increased bandwidth-length-product of over 100 MHz-km. A cladding layer of non-doped silica is formed on the core...
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7400808 |
Optical fiber, light amplifier, and light source
A coated optical fiber capable of transmitting high-power light, which is an optical fiber having an outer surface coated with a coating material, is characterized in that the coating material is...
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7400807 |
Apparatus and method for a waveguide with an index profile manifesting a central dip for better energy extraction
A method and apparatus is described that use an index-of-refraction profile having a significant central dip in refractive index (or another tailored index profile) within the core of a gain fiber...
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7400803 |
Method and apparatus for providing a hydrogen diffusion barrier for fiber optic cables used in hostile environments
A fiber optic conduit for use in a hostile environment includes an axial tube. The axial tube comprises a corrosion resistant material and is operable to receive one or more optical fibers. The...
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7400795 |
Light conduits having peripheral, shape-defining polymer overmolds
An elongated light-guiding element includes opposed incident and emission ends between which light propagates by total internal reflection. The light-guiding element includes a glass core with...
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7397976 |
Fiber optic sensor and sensing system for hydrocarbon flow
An assembly senses fluid pressure variations within a passageway along a length of a flowline. A fiber optic cable is disposed axially within the passageway of the flowline. The fiber optic cable...
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7376315 |
Optical fiber, optical fiber connecting method, and optical connector
An optical fiber which, at an optical fiber connecting end having a plurality of voids around the periphery of a core, has a light-permeable substance, such as a resin or glass whose refractive...
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