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| Number | Title | Issue Date |
| 8141391 | Glass preform manufacturing method A glass preform manufacturing method includes: generating glass fine particles by hydrolyzing a source gas in an oxyhydrogen flame; depositing the generated glass fine particles to form a torous glass preform; immersing the porous glass preform in an additive soluti... | 03/27/2012 |
| 7905114 | Method for forming optical fiber preforms Optical fiber preforms can comprise a glass preform structure with an inner cavity. A powder can be placed within the inner cavity having an average primary particle size of less than about one micron. The powder can be in the form of an unagglomerated particles or ... | 03/15/2011 |
| 7637126 | Method for the production of laser-active quartz glass and use thereof The invention relates to a method for the economic production of a blank for a component made from laser-active quartz glass in any form or dimension. The method comprises the following method steps: a) preparation of a dispersion with a solids content of at least 4... | 12/29/2009 |
| 7624596 | Method for the preparation of doped oxide material A method for preparing doped oxide material, in which method substantially all the reactants forming the oxide material are brought to a vaporous reduced form in the gas phase and after this to react with each other in order to form oxide particles. The reactants in... | 12/01/2009 |
| 7361207 | System and method for electrostatically depositing aerosol particles A system useful for electrostatic deposition (ESD) of aerosol particles and methods of depositing the aerosol particles onto a substrate are disclosed. The ESD system and the method of the present invention are useful for electrostatically depositing nanoparticles p... | 04/22/2008 |
| 7355788 | Active optical fiber for Raman amplification A Raman amplification active optical fiber comprises a core containing silica oxide (SiO2), lithium oxide (Li2O), germanium oxide (GeO2), and barium oxide (BaO). The core contains 30 to 90 molar percent of SiO2 and less th... | 04/08/2008 |
| 7340124 | Optical switch using rare earth doped glass The present invention provides an optical switch including a loss element having a signal loss, and a rare earth doped gain element optically connected in series with the loss element. The rare earth doped gain element is operable to produce a signal gain. The signa... | 03/04/2008 |
| 7333263 | Transition metal doped fiber amplifier An optical amplifier includes an optical fiber having a core doped with transition metal ions, and at least one glass cladding enclosing the core. By using the fiber, the optical amplifier of the invention has a gain bandwidth of more than 300 nm including 1300-1600... | 02/19/2008 |
| 7283293 | High efficiency optical amplifying fiber A small size and high efficiency laser oscillation apparatus capable of obtaining high output and high beam quality laser light is provided. First waveguide (21) (refractive index=n1) for transmitting excitation light, second waveguide (22) comp... | 10/16/2007 |
| 7245424 | Amplification device utilizing thulium doped modified silicate optical fiber A device amplifies light at wavelengths in the vicinity of 1420-1530 nm, using thulium doped silica-based optical fiber. This wavelength band is of interest as it falls in the low-loss optical fiber telecommunications window, and is somewhat shorter in wavelength th... | 07/17/2007 |
| 7216509 | Sol-gel process for the production of high dimensions dry gels and derived glasses It is described a sol-gel process that allows to obtain dry gels, and possibly the corresponding dense glassy bodies, having higher dimensions compared to similar known processes. ... | 05/15/2007 |
| 7184636 | Method of controllably doping a glassy optical preform with water A method of manufacturing a glassy optical preform is disclosed that includes providing a preform having a silica soot layer and then sintering the soot layer into a glassy layer, and water is selectively added to the preform by exposing the soot layer to a gaseous ... | 02/27/2007 |
| 7180656 | Compact optical amplifier The optical amplifier has a waveguide including a core and a cladding. The cladding at least partially surrounds the core and is doped with at least one species of rare earth ion in the range of 5 to 75 wt %. In another embodiment, the core is doped with Er3+ | 02/20/2007 |
| 7170674 | Fluorescence glass, optical wave guide for optical amplifier and optical amplifier module The present invention provides fluorescent glass containing at least 50 mol % of at least one kind of oxide selected from the group consisting of SiO2, GeO2, and P2O5 as a glass constituent of a region containing a Bi ion ... | 01/30/2007 |
| 7159418 | Method of producing synthetic quartz glass Fluorine-containing synthetic quartz glass is produced by feeding silica-forming material, hydrogen, and oxygen gases from a burner to a reaction zone, flame hydrolyzing the silica-forming material in the reaction zone to form particles of silica, depositing the sil... | 01/09/2007 |
| 7155098 | Method of manufacturing optical fiber preform using modified chemical vapor deposition including dehydration and dechlorination process and optical fiber manufactured by the method Disclosed is a method of manufacturing an optical fiber perform using MCVD including dehydration and dechlorination, which executes the following process repeatedly with changing the composition of soot generation gas according to the refractive index profile, the p... | 12/26/2006 |
| 7140202 | Method for manufacturing optical glasses and colored glasses at low temperatures The invention relates to a method for manufacturing optical glasses and colored glasses with the aid of a fluid phase sintering process from a basic material encompassing at least SiO.sub.2 powder as well as additives for reducing the temperature of the fluid phase ... | 11/28/2006 |
| 7139458 | Double clad rare earth doped fiber An optical fiber comprising: (i) a silica based, rare earth doped core having a first index of refraction n1; (ii) a silica based inner cladding surrounding the core having a second index of refraction n2, such that n1>n2;... | 11/21/2006 |
| 7130513 | Glass-body-producing method and optical glass body and optical fiber A method produces a glass body that contains a reduced amount of OH groups in the metallic-oxide-containing glass layer and that has a reduced amount of transmission loss due to OH groups when the glass body is transformed into an optical fiber. The production metho... | 10/31/2006 |
| 7116887 | Optical fiber An optical fiber comprises a photosensitive core that includes a concentration of a first material that increases the refractive index of the core and a concentration of a second material that is other than boron and that reduces the refractive index of the core. A ... | 10/03/2006 |
| 7107795 | Method for forming high-density multicore phase-locked fiber laser array A method for forming a multicore fiber laser array includes inserting a plurality of rare-earth doped rods into a corresponding plurality of hollow capillaries, and arranging the resulting plurality of filled capillaries into a preform pattern. The plurality of fill... | 09/19/2006 |
| 7088900 | Alkali and fluorine doped optical fiber Disclosed is an optical fiber having a core of SiO2 doped with fluorine and an alkali metal oxide dopant. The alkali metal oxide is selected from the group consisting of K, Na, Li, Cs and Rb and is provided in amount of at least 20 ppm wt. %. The fiber ha... | 08/08/2006 |
| 7079738 | Method for manufacturing a glass doped with a rare earth element and fiber for optical amplification using the same An optical fiber for optical amplification, characterized in that a full width at half maximum of gain spectrum is 45 nm or more; and a maximum value of power conversion efficiency is 80% or more. A method for producing a rare earth element-doped glass for use in ma... | 07/18/2006 |
| 7072100 | Optical amplifier and gain tilt compensation method The optical amplifier realizes EDFA amplification of optical signals in new bands (the S+- and S-bands), at wavelengths of 1450 to 1530 nm. The amplifier uses multiple erbium-doped fibers to amplify optical signals at wavelengths of 1450 to 1530 nm. Each ... | 07/04/2006 |
| 7058245 | Integrated optical circuits An optoelectronic device having a flexible substrate and an optical interconnect (i.e. waveguide) comprising a sol-gel based material formed on the substrate. The sol-gel based waveguide is capable of being integrated into an all-optical system and provides for grea... | 06/06/2006 |
| 7058269 | Reconstructed glass for fiber optic applications The present invention concerns a preform for an optical fiber, an optical fiber so obtained and methods for making the same. The fiber is characterized in that porous glass doped with at least one dopant is used. Resulting fibers can be used to make high attenuation... | 06/06/2006 |
| 7038845 | Optical amplifier and optical fiber laser An optical amplifier including: an erbium-doped amplifier medium, a first excitation generator and a second excitation generator. The first excitation generator is adopted to cause a first type excitation of the at least one kind of rare-earth ions to cause a popula... | 05/02/2006 |
| 7003984 | Hybrid manufacturing process for optical fibers A hybrid method of and apparatus for producing a structure capable of being drawn into an optical fiber. The method includes the steps of conducting vapor-phase reactants into an interior region of a glass tube, conducting aerosol form reactants into the interior of... | 02/28/2006 |
| 7003206 | Cladding-pumped optical fiber and methods for fabricating Disclosed is an optical fiber article for receiving pump radiation of a first wavelength for amplifying or generating radiation of a second wavelength. The optical fiber article includes a core for propagating light of the second wavelength. The core has a first ind... | 02/21/2006 |
| 6997015 | EUV lithography glass structures formed by extrusion consolidation process The invention discloses a method for forming substantially striae-free glass substrates that are suitable for optical applications, including use in forming optical elements or structures such as mirrors and platen stage structures that can be used, for example, in ... | 02/14/2006 |
| 6996324 | Optical waveguide and method for fabricating the same An optical waveguide comprising cladding 1 and core segment 20 buried in cladding 1 and serving as a waveguide, wherein a combination of glass material constituting the core segment 20 and another glass material constituting the cladding ... | 02/07/2006 |
| 6978077 | Plastic optical fiber and method for producing the same A plastic optical fiber and a method for producing the same is disclosed. The plastic optical fiber is formed as a fiber of core-cladding structure. A protective layer or shield layer may be provided on the outer surface of the optical fiber of core-cladding structu... | 12/20/2005 |
| 6966201 | High-temperature sintering of soot bodies doped using molecular stuffing Techniques are described for fabricating a preform from a soot body. In one described technique, a soot body is loaded into a substrate tube, and the position of the soot body is stabilized within the tube. The tube is then rotated around its longitudinal axis. Heat... | 11/22/2005 |
| 6955774 | Plastic optical fiber and method for producing the same A plastic optical fiber and a method for producing the same is disclosed. The plastic optical fiber is formed as a fiber of core-cladding structure. A protective layer or shield layer may be provided on the outer surface of the optical fiber of core-cladding structu... | 10/18/2005 |
| 6950586 | Fiber for enhanced energy absorption Fibers, including fiber lasers and fiber amplifiers, and systems containing such fibers are disclosed. ... | 09/27/2005 |
| 6945078 | Optical waveguide in the interior of silica glass and method of forming optical waveguide When an optical waveguide is formed by focused femtosecond laser pulses in a pure silica glass to induce a refractive index increase region, a pulse width of femtosecond laser pulses are changed, a peak power of femtosecond laser pulses at the focal point is changed... | 09/20/2005 |
| 6944192 | Planar laser An optical device (10) includes a broad area laser (72) for lasing at a first wavelength (64), a multimode active-doped tapered waveguide laser (6); and a multimode passive planar mode transformer (118) coupling and tapering from t... | 09/13/2005 |
| 6941053 | Triple-clad rare-earth doped optical fiber and applications An optical fiber comprises a singlemode core, and an inner cladding disposed around said core, an intermediate cladding disposed around said inner cladding and an outer cladding disposed around said intermediate cladding thereby forming a triple-clad geometry. The c... | 09/06/2005 |
| 6915665 | Method of inducing transmission in optical lithography preforms The invention provides an ultraviolet lithography method/system. The lithography method and system include providing a below 200 nm radiation source, providing a photolytically improved transmitting fused silica glass lithography optical element, transmitting below ... | 07/12/2005 |
| 6911160 | Phosphate glass for use in the manufacture of ultra-short length lasers and amplifiers A high-gain phosphate glass composition, which can be used to produce ultra-short gain length lasers and optical amplifiers is described wherein the composition of the glass in addition to exhibiting high gain for lasers and amplifiers, also exhibits high thermal sh... | 06/28/2005 |
