|
Match
|
Document |
Document Title |
|
|
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...
|
|
|
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...
|
|
|
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...
|
|
|
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...
|
|
|
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...
|
|
|
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...
|
|
|
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...
|
|
|
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...
|
|
|
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,...
|
|
|
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...
|
|
|
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...
|
|
|
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...
|
|
|
7526149 |
Dual wavelength strain-temperature Brillouin sensing system and method
An optical fiber strain-temperature sensing system includes first and second optical sources respectively generating first and second light signals having different wavelengths. Optical circulators...
|
|
|
7526160 |
Optical fiber Bragg grating with improved hydrogen resistance
Hydrogen-induced losses in germanium-doped fibers is significantly reduced by increasing the concentration of oxygen in the core region of the glass. The increase in oxygen functions to “heal”...
|
|
|
7524780 |
Low loss optical fiber and method for making same
A method of forming an alkali metal oxide-doped optical fiber by diffusing an alkali metal into a surface of a glass article is disclosed. The silica glass article may be in the form of a tube or a...
|
|
|
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...
|
|
|
7522800 |
Method for the production of an optical fibre, preform, and an optical fibre
A preform for manufacturing an optical fibre or an optical fiber, where the variation in the refractive index contrast of the preform does not exceed an absolute value of 2%, measured for a preform...
|
|
|
7519251 |
Optical fiber with mode sink
The present invention concerns an optical fiber acting as a slab-coupled waveguide. The optical fiber has a cross-section comprising a core ( 1 ), which is two dimensional and responsible for the...
|
|
|
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...
|
|
|
7519262 |
Fiber used in wideband amplified spontaneous emission light source and the method of making the same
The present invention relates to a fiber having a core of crystal fiber doped with chromium and a glass cladding. The fiber has a gain bandwidth of more than 300 nm including 1.3 mm to 1.6 mm in...
|
|
|
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...
|
|
|
7519252 |
Laser annealing apparatus
A laser annealing apparatus comprises a laser oscillator having a Q switching action, one or a plurality of partially reflective mirrors for split a laser beam emitted from the laser oscillator...
|
|
|
7519255 |
Optical fiber
An inner core has a first refractive index. An outer core having a second refractive index lower than the first refractive index is formed on outer circumference of the inner core. A cladding...
|
|
|
7515774 |
Methods and apparatus for single fiber optical telemetry
Single fiber optical telemetry systems and methods are disclosed. The methods and systems facilitate input and output via a single fiber optic interface. The optical telemetry systems and methods...
|
|
|
7515801 |
Coherent terahertz radiation source
A THz radiation source comprising a dual waveguide heterostructure is provided. The dual waveguide heterostructure includes an optical waveguide contained within a larger THz waveguide layered...
|
|
|
7509010 |
End-surface closely arranged multicore optical fiber and manufacturing method thereof
In an end surface closely arranged multicore optical fiber 200 , at least two single-mode optical fibers 10 are, at one and the other ends of the individual single-mode optical fibers 10 ,...
|
|
|
7509018 |
Plastic optical fiber and production method thereof
A cylindrical outer clad section is formed by melt-extrusion molding of polyvinylidene fluoride (PVDF) having a molecular structure in which the number of defect bonds of successive CF 2 units and...
|
|
|
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...
|
|
|
7505657 |
Single-mode optical fiber
A single-mode optical fiber has a prescribed mode field diameter (MFD 1 (μm)) at a first wavelength λ 1 , in which a bending loss when measured at a second wavelength λ 2 (μm) and wound with...
|
|
|
7505655 |
White light-emitting device using fluorescent fiber
A white light-emitting device using a fluorescent fiber includes a blue semiconductor light-emitting element ( 2 ) for emitting an excitation light (a), and an optical fiber ( 3 ) having one side...
|
|
|
7505659 |
Optical fiber and optical transmission line and optical communication system including such optical fiber
Optical fibers to form an optical transmission line suitable for WDM transmission in a wide-spreading wavelength band, having the following characteristics and parameters: a dispersion in absolute...
|
|
|
7505658 |
Optical fiber device
An optical fiber device comprising a positioning/fixing substrate has a fiber guide and an optical fiber pressing spring formed in the fiber guide, and an optical fiber stored in the fiber guide....
|
|
|
7505656 |
Optical fiber and optical fiber device
An optical fiber and an optical fiber device, which can suppress generation of the stimulated Brillouin scattering while maintaining large nonlinearity. The fiber includes a central core which is...
|
|
|
7502539 |
Rare earth doped optical fiber
An optical fiber including: (i) a silica based, Yb doped core having a first index of refraction n 1 , said core comprising more than 1 wt % of Yb, said core having less than 5 dB/km loss at a...
|
|
|
7499605 |
Fiber Bragg grating for high temperature sensing
A method of fiber core material band gap engineering for artificially modifying fiber material properties is provided. The method includes doping the fiber core material with one or more atoms for...
|
|
|
7499612 |
Multimode planar waveguide spectral filter
A spectral filter comprises a planar optical waveguide having at least one set of diffractive elements. The waveguide confines in one transverse dimension an optical signal propagating in two other...
|
|
|
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...
|
|
|
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...
|
|
|
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...
|
|
|
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...
|
|
|
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...
|
|
|
7486862 |
Optical fiber and manufacturing method thereof
A core rod is inserted into a cladding pipe, moisture in a space between the core rod and the cladding pipe is removed, and an optical fiber is drawn while the space is connected to a dry-gas...
|
|
|
7486858 |
Systems and methods for creating localized refractive index modulations in an optical fiber
A technique is described for creating a localized modulation of an optical fiber's refractive index profile. A segment of optical fiber is loaded into a heating unit having a resistive heating...
|
|
|
7486864 |
Monitoring system for turbine engine
A monitoring system for a gas turbine or other elevated temperature environment is provided. The system has one or more photonic crystal fibers for capturing and transmitting light to an imaging...
|
|
|
7486895 |
Effective control algorithm for optical polarization mode dispersion compensators
The present invention includes apparatus and method of a variable step size dithering control algorithm for polarization mode dispersion controllers (PMDCs). The dithering step size of the PCs is...
|
|
|
7486858 |
Systems and methods for creating localized refractive index modulations in an optical fiber
A technique is described for creating a localized modulation of an optical fiber's refractive index profile. A segment of optical fiber is loaded into a heating unit having a resistive heating...
|
|
|
7486863 |
Method for treating optical fiber and apparatus for treating optical fiber
A method of treating optical fiber includes at least a first step of creating a reduced-pressure atmosphere in a space which holds the optical fiber, and a second step of introducing to the space a...
|
|
|
7481588 |
Optical fiber composite, devices, and methods of making same
This invention relates to an optical fiber composite comprising an asymmetric optical fiber comprising a first end with a substantially non-circular cross-section, and a substantially circular clad...
|
|
|
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...
|
|
|
7483611 |
Transmission fibre with optical amplification and method for producing same
A transmission fibre with optical amplification, comprising a core and a cladding. The core material is doped with a first dopant of a material having a higher index of refraction than the material...
|