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| Number | Title | Issue Date |
| 7218820 | Method and system 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 a hydrogen barrier shell that is disposed outwardly from an inner axial tube. The hydrogen barrier shell comprises a material that is capable of reducing hydrogen permeation through the fiber optic cond... | 05/15/2007 |
| 7110652 | Optical waveguide and method of manufacture An optical waveguide capable of having various characteristics and a method of manufacture thereof as well as a method of manufacturing a crystal film are provided. An optical functional material KTaxNb1−xO3 is used as an optical w... | 09/19/2006 |
| 6944380 | Optical fiber for transmitting ultraviolet ray, optical fiber probe, and method of manufacturing the optical fiber probe It is an object of the present invention to provide an optical fiber for transmitting ultraviolet ray which has an improve transmittance and is prevented from deterioration by ultraviolet ray with which it is irradiated. It is another object of the present invention... | 09/13/2005 |
| 6907170 | Hydrogen diffusion delay barrier for fiber optic cables used in hostile environments A fiber optic cable for use in a hostile environment includes a fiber in metal core. The fiber in metal core includes one or more optical fibers that are disposed inwardly from an inner axial tube. The fiber optic cable also includes a hydrogen barrier shell that is... | 06/14/2005 |
| 6816648 | Integrated waveguide gratings by ion implantation Integrated semiconductor waveguide gratings, methods of manufacture thereof and methods of apodizing thereof are described. A semiconductor waveguide grating includes a substrate, a cladding layer disposed on the substrate, a guide structure that includes a pluralit... | 11/09/2004 |
| 6724963 | Method and apparatus for manufacturing partially diffusing optical fibers The present invention provides for an apparatus and method to manufacture optical fiber in a way that produces controlled and patterned diffusion of optical radiation along its length. The novelty of the described invention is that the patterns of diffusion are prod... | 04/20/2004 |
| 6601411 | Method for annealing an optical waveguide having a bragg grating to accelerate ageing The present invention provides a method for annealing an optical waveguide, including an optical fiber or large-diameter waveguide structure, having along some length an induced refractive index difference that decays over time and so causes drift in the ... | 08/05/2003 |
| 6220059 | Method of coating a UV-fiber with blocking layers and charging the fiber with hydrogen or deuterium A method of producing an optical component for the transmission of UV light is provided. An optical fiber is prepared from synthetic quartz glass or from doped synthetic quartz glass with a transmission region for the transmission of UV light, and the tra... | 04/24/2001 |
| 5961682 | Method of fabricating optical fiber doped with rare earth element using volatile complex A method of fabricating an optical fiber doped with a rare earth component using a volatile complex, which flattens the light frequency response under a stimulated emission of radiation principle using a modified chemical vapor deposition method. Silicon ... | 10/05/1999 |
| 5938811 | Method for altering the temperature dependence of optical waveguides devices In accordance with the invention glass waveguide devices are provided with enhanced temperature stability by incorporating within appropriate lengths of the waveguides a transparent compensating material having a refractive index variation with temperatur... | 08/17/1999 |
| 5763340 | Method for production of SiO2 glass material having regions changed in light refractive index and SiO2 glass material produced by the method A method for producing a SiO2 glass material having regions changed in light refractive index is provided which comprises implanting at least 5×1019 Ge ions/cm3 into a SiO2 glass substrate, heat-treating the su... | 06/09/1998 |
| 5681365 | Radiation resistant optical waveguide fiber A radiation resistant optical waveguide fiber doped with fluorine or drawn with low tension in the fiber. The fluorine doping is substantially constant across the core and a portion of the clad adjacent the core. The concentration of the fluorine is in th... | 10/28/1997 |
| 5127928 | Method for the manufacture of a waveguide mixer A method is presented for writing a permanent spatially periodic phase-matching second-order non-linearity grating in an optical waveguide. Single frequency exciting radiation is launched in a pair of guided modes of the waveguide in the presence of an ex... | 07/07/1992 |
| 4676820 | Optical waveguide fabrication method A method of fabricating an optical waveguide comprising a plane substrate made of a material having a relatively low refractive index, a plane light propagation layer made of a material having a higher refractive index than the substrate, inserted between... | 06/30/1987 |
| 4202679 | Process and apparatus for the continuous production of elongate light conductors An elongate light conductor of circular or other cross-section is continuously produced by depositing, in a vacuum chamber, a powdered glassy (i.e. vitreous or vitrifiable) material upon the upper end of a descending rod of like material while training a ... | 05/13/1980 |
