Patents in Class 385/124

Matches 1 - 50 out of 712

Match	Document	Document Title
1	7620282	Low bend loss single mode optical fiber Optical waveguide fiber that is bend resistant and single mode at 1260 nm and at higher wavelengths. The optical fiber includes a core of radius R 1 and cladding, the cladding having an annular...
2	7616856	Varying refractive index optical medium using at least two materials with thicknesses less than a wavelength An optical medium has a graded effective refractive index with a high maximum refractive index change. The medium is formed using alternating layers of two or more materials having significantly...
3	7613374	Optical fiber and optical-fiber transmission line An optical fiber that transmits a signal light in a fundamental propagation mode has a cutoff wavelength longer than a wavelength of the signal light, a wavelength dispersion of the fundamental...
4	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...
5	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...
6	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...
7	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,...
8	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...
9	7570857	Low bend loss dispersion slope compensating optical fiber A dispersion compensating optical waveguide fiber that includes a core region surrounded by and in contact with a clad layer, wherein the respective refractive index profiles of the core region and...
10	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...
11	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...
12	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...
13	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...
14	7539381	Low bend loss coated optical fiber An optical fiber includes a core and a cladding, said cladding having a refractive index n c a first coating directly contacting the cladding of said fiber, said coating having a thickness of less...
15	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...
16	7539358	SOI-based opto-electronic device including corrugated active region The surface silicon layer (SOI layer) of an SOI-based optical modulator is processed to exhibit a corrugated surface along the direction of optical signal propagation. The required dielectric layer...
17	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...
18	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,...
19	7522803	Process for producing optical device The present invention provides a method of producing an optical element without the need for high vacuum, unlike the thin film deposition methods, and without using a molten salt. More...
20	7519281	Electronic device with camera and fingerprint security function For performing a fingerprint security function in an electronic device having a camera unit, a focus of a lens in the camera unit is adjusted to a first focus level when a control signal set...
21	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...
22	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...
23	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...
24	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...
25	7493009	Optical fiber with tin doped core-cladding interface The present invention concerns an optical fiber 10 comprising a substantially pure silica glass core 12 , a concentric tin-doped core/cladding interface region 14 , and a concentric...
26	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...
27	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...
28	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...
29	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...
30	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...
31	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...
32	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...
33	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...
34	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...
35	7454109	Optical fiber with zero dispersion wavelength shifted to short wavelength region, and optical transmission line and optical transmission system using the same Disclosed is an optical fiber suitable for WDM system, particularly whose zero-dispersion wavelength is positioned in a short wavelength band less than 1,300 mm. In the optical fiber, dispersion...
36	7450808	Optical fiber article and methods of making A method of making an optical fiber article can include providing an optical fiber including at least a core; providing a preform; and subsequent to the foregoing providing of the optical fiber and...
37	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...
38	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...
39	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 ...
40	7437044	Pure silica core, high birefringence, single polarization optical waveguide Methods and apparatus provide for birefringent waveguides suitable for optical systems exhibiting polarization dependence such as interferometer sensors including Sagnac interferometric fiber optic...
41	7437043	Large diameter optical waveguide, grating and laser A large diameter optical waveguide, grating, and laser includes a waveguide 10 having at least one core 12 surrounded by a cladding 14, the core propagating light in substantially a few...
42	7437040	Optical fiber with reduced stimulation Brillouin scattering An optical fiber having a given refractive index profile comprises a core region and a cladding region. The core region includes at least two co-dopants and the concentration of at least one of...
43	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...
44	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...
45	7426328	Varying refractive index optical medium using at least two materials with thicknesses less than a wavelength An optical medium has a graded effective refractive index with a high maximum refractive index change. The medium is formed using alternating layers of two or more materials having significantly...
46	7425099	Systems and methods for modifying selected portion of optical fiber microstructure An air-clad optical fiber is provided having a core that is surrounded by an inner cladding region, an air-clad region, and an outer region. A lead end of the air-clad optical fiber is prepared for...
47	7424195	Multimode optical fibre Optical fiber having a multimode core ( 10 ) comprising:—a first zone ( 11 ), which is homogeneous, made of a first material, which has a first refractive index;—a second zone ( 12 ) made of at...
48	7421174	Multi-wavelength, multimode optical fibers A silicate optical fiber comprises a graded index silicate core co-doped with aluminum oxide, phosphorus oxide, germanium oxide and fluorine in unique compositions that we have discovered allow...
49	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...
50	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 ,...

Matches 1 - 50 out of 712

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