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7620281 |
Subwavelength-diameter silica wires for low-loss optical waveguiding
The present invention provides nanometer-sized diameter silica fibers that exhibit high diameter uniformity and surface smoothness. The silica fibers can have diameters in a range of a about 20 nm...
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7620280 |
Filled core optical fiber spliced to optical fiber and method of making the same
A filled-core optical fiber ( 100 ) spliced to conventional, solid core optical transmission fiber ( 175 ) and a related method of making the same are provided. The optical fiber ( 100 ) comprises...
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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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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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7606460 |
Optical fiber and transmission system, and wavelength division multiplexing system
An optical fiber comprises a center core and a cladding located at an outer periphery of the core, wherein the core comprises at least one codoped layer made from silica glass doped with germanium...
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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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7596292 |
Treatment method for optical fiber
A treatment method for an optical fiber including accommodating an optical fiber inside a treatment chamber; introducing a deuterium containing gas into the treatment chamber; and in a deuterium...
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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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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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7586085 |
Photo-detection device and method
The broad range measurement exploiting the usual propagated light and the high resolution measurement mode exploiting near-field light are to be accomplished with a sole as-assembled optical probe....
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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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7583877 |
Optical fiber, optical fiber connection structure and optical connector
An optical fiber includes a core, a clad having a plurality of air holes at a periphery of the core, and a hardening resin filled in a sealed portion at an end of the plurality of air holes. The...
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7583866 |
Optoelectronic system for sensing an electric field signal
An optoelectronic system for sensing an electric field signal includes an optically modulated scattering module configured to convert an electric field signal into a modulated scattering signal...
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7580606 |
Method of forming an optical fiber
Marker grooves of an optical fiber are formed by a marker groove forming device including at least, on a substrate, a fiber guide and optical fiber pressing springs formed on a side wall surface in...
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7577365 |
Optical pulse regeneration device, installation comprising one such device and use of same
This device for optically regenerating pulses includes a synchronous intensity modulator to provide time synchronization for pulses passing through it and to stabilize intensity fluctuations in 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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7574089 |
Optofluidic devices and methods of using the same
An optofluidic device is provided. The device includes a cladding region having a first refractive index, and a channel defined by the cladding region such that the cladding region forms an inner...
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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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7574087 |
Optical fiber
An optical fiber includes a clad portion and a core portion surrounded by the clad portion. Here, the clad portion is formed by substantially pure quartz, and the core portion has a higher...
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7574075 |
Fiber Bragg grating and fabrication method
A method of fabrication of a thermally stabilized Type I fiber Bragg grating-based temperature sensing device includes doping a fiber core material with germanium or germanium oxide for enhancing...
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7573918 |
Dispersion compensated mode-locked pulsed lasers and optical amplifiers
Techniques, apparatus and systems for providing compensation mechanisms for mode-locked lasers and optical amplifiers and a dispersion compensation mechanism to allow a mode-locked laser and an...
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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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7565048 |
Undersea optical fiber transmission systems
Described are optical fibers having a relatively large effective area, large negative dispersion coefficient, and relatively low attenuation. These optical fibers are advantageously paired with...
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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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7555220 |
Chromatic dispersion compensator (CDC) in a photonic integrated circuit (PIC) chip and method of operation
An optical equalizer/dispersion compensator (E/CDC) comprises an input/output for receiving a multiplexed channel signal comprising a plurality of channel signals of different wavelengths. An...
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7555184 |
Optical fiber, end face structure of optical fiber assembly, and optical connector
An optical fiber includes a core, a clad formed around the core, a plurality of holes being formed in the clad, and a UV curing optically-transparent resin which is filled in the holes and...
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7551823 |
Optical transmission fiber with thermal management for high-power applications
An optical transmission fiber including a core having a first index of refraction, a cladding material located around the core and having a second index of refraction less than the first index of...
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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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7551816 |
Arrangement for low cost path protection for optical communications networks
An arrangement provides low cost path protection in an optical communications network. The arrangement has a portion 3 that provides (broadcasts) an outbound optical signal, and at least first...
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7551810 |
Segmented fiber optic sensor and method
A fiber optic sensor for sensing the presence of an analyte has a plurality of optical fibers each of which has at least one analyte sensing segment and one or more low loss lead portion, where the...
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7551809 |
Optical fiber delivery system for delivering ultrashort optical pulses and optical system including the same
An optical fiber delivery system for delivering ultrashort optical pulses that can efficiently transmit high peak power, ultrashort optical pulses from an optical pulse source to a desired position...
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7548674 |
Alignment method for circular multi-core optical fiber
The present invention relates to a method of aligning circular multi-core fibers, wherein the method utilized independent and individually selected cores to receive, transmit, and emit light from...
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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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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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7536074 |
Optical fiber
An optical fiber made of silica-based material includes a core and a cladding formed around the core. The core is doped with germanium dioxide, which increases refractive index and decreases...
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7534055 |
Low polarisation mode dispersion (PMD) optical fiber link, and method of making the same
An optical fiber link has a plurality of optical fiber spans joined one to the other, the plurality of optical fiber spans including at least one first unidirectionally-spun optical fiber span and...
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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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7532785 |
Photonic interconnects for computer system devices
Various embodiments of the present invention are directed to photonic interconnects that can be used for on-chip as well as off-chip communications between computer system components. In one...
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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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7526168 |
Optical fiber, transmission system, and wavelength division multiplexing system
An optical fiber has a first mode field diameter in a dominant mode of an acoustic mode generated in the optical fiber different from a second mode field diameter in a light intensity distribution...
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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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7526164 |
Reflective polarizers containing polymer fibers
A polarizer is formed with an arrangement of polymer fibers substantially parallel within a polymer matrix. The polymer fibers are formed of at least first and second polymer materials. At least...
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