Did You Know...
...that the x-ray was discovered purely by accident? When German physicist Wilhelm Konrad von Roentgen was experimenting with cathode rays in 1895, he put an activated Crookes tube in a book and went out to lunch. When he returned, he discovered that a key that had also been placed in the book showed up as an image on the developed film!
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| Number | Title | Issue Date |
| 8113017 | Method for cleaning a glass substrate, method for fabricating a glass substrate, and magnetic disk using same A method for cleaning a glass substrate which ensures removal of abrasive and other foreign matter without making a cleaning step complicated involves cleaning the glass substrate by scrubbing using two or more types of cleaning liquid having different Si element el... | 02/14/2012 |
| 8096148 | Method for fabricating a glass substrate, magnetic disk, and method for fabricating the same A method for fabricating a glass substrate containing SiO2 as a main ingredient thereof and having a uniform and minute pattern of stripes formed on the surface thereof by ultraprecision polishing includes a step of inspecting whether or not, at the topmo... | 01/17/2012 |
| 8011208 | Reduction of optical fiber cane/preform deformation in consolidation According to an embodiment of the invention a method of manufacturing optical fiber cane comprises the steps of: (i) providing a core rod manufactured of relatively low viscosity glass; (ii) depositing SiO2 based soot around the core rod to form a soot pr... | 09/06/2011 |
| 7980097 | Methods and systems for controlling temperature of a bushing Various embodiments of the present invention relate to glass fiber forming bushings, to methods of controlling the temperature of bushings having multiple segments, to systems of controlling the temperature of bushings having multiple segments, and to other systems ... | 07/19/2011 |
| 7946133 | Methods for modifying ovality of optical fiber preforms Methods for modifying preform core ovality during and subsequent to the formation of an optical fiber preform. After MCVD deposition forms the core rod, but prior to overcladding of the core rod, the code rod may be etched to change its ovality. In order to etch the... | 05/24/2011 |
| 7930903 | Method for manufacturing a preform as well as a method for forming optical fibres from such a preform A method for manufacturing a preform for optical fibers by means of a vapor deposition process, wherein plasma conditions are created and wherein the plasma is moved back and forth along the longitudinal axis of the hollow substrate tube between a reversal point nea... | 04/26/2011 |
| 7921674 | Method of manufacturing optical waveguide using optical soliton There is provided a method of manufacturing an optical waveguide, the method including: allowing a beam to be incident in an optical waveguide direction of an optical waveguide material; generating an optical soliton in the optical waveguide material by adjusting in... | 04/12/2011 |
| 7921673 | Apparatus and method for measuring the weight of an optical fiber preform during a chemical deposition process for forming the preform An apparatus for measuring the weight of a preform for optical fibers during a chemical deposition process for the formation of a preform is disclosed. The apparatus has at least one elastic constraint associated with at least one end portion of an elongated element... | 04/12/2011 |
| 7900480 | Method of determining heating amount, method of fusion splicing, and fusion splicer A method of determining a heating amount adequate for fusion splicing is provided. In the method, the melting state of the end portions of optical fibers can be monitored on a real time basis so that fewer tests need to be performed. A method of fusion splicing and ... | 03/08/2011 |
| 7861556 | Method and apparatus for impulsively spinning optical fiber A method and apparatus for impulsively spinning optical fiber while the optical fiber is being drawn is disclosed herein. ... | 01/04/2011 |
| 7856853 | Rotary process for making mineral fiber insulation material A method of manufacturing mineral fibers includes rotating an orificed spinner and supplying molten mineral material to the spinner to centrifuge streams of molten mineral material. A downward annular flow of attenuating gases is directed to attenuate the streams of... | 12/28/2010 |
| 7849713 | Optical fibre having low splice loss and method for making it A process for making a non-zero dispersion shifted optical fiber having low splice loss and low attenuation and to an optical fiber produced by this process. A reduction of the splice loss is observed with decreasing drawing tension. The optical fiber has a core reg... | 12/14/2010 |
| 7805963 | Method for continuously forming optical fiber connector glass and other close tolerance components A method and device for making high precision glass forms (110). A glass rod (1) is pushed into a melting tube (47) and the glass form is pulled from the chamber. Preferably, both the push rate and the pull rate are controlled. Fiber optic glass... | 10/05/2010 |
| 7788951 | Method of elongating an optical fiber base material There is provided an elongation method of an optical fiber base material, by which a base material rod not requiring a process for modifying a bend from base material ingot is obtained. The method for elongating base material ingot to be a base material rod having a... | 09/07/2010 |
| 7716951 | Method for manufacturing article comprising deposited fine glass particles A method of producing a glass-particle-deposited body that has a small diameter variation and the like resulting from alteration of the deposition condition is offered. When the glass-particle-deposited body is produced, a burner row constituted by placing a plurali... | 05/18/2010 |
| 7658086 | Drawing method for bare optical fiber with suppressed hydrogen diffusion A drawing method for a bare optical fiber, comprises the steps of: melting an optical fiber preform using a heating device and drawing the bare optical fiber; and naturally cooling down the bare optical fiber or forcibly cooling down the bare optical fiber by a cool... | 02/09/2010 |
| 7614253 | Method of reducing stress-induced mechanical problems in optical components A method of making optical quality films is described. A silica film is deposited on a wafer by PECVD (Plasma Enhanced Chemical Vapor Deposition). The deposited film is then subjected to a first heat treatment to reduce optical absorption, wafer warp, and compressiv... | 11/10/2009 |
| 7568365 | Method and apparatus for micromachining bulk transparent materials using localized heating by nonlinearly absorbed laser radiation, and devices fabricated thereby Thermal 3-D microstructuring of photonic structures is provided by depositing laser energy by non-linear absorption into a focal volume about each point of a substrate to be micromachined at a rate greater than the rate that it diffuses thereout to produce a point s... | 08/04/2009 |
| 7484387 | Method of making a microstructured optical fiber An optical fiber has a section of the first kind having a chromatic dispersion not less than a given positive value x and a negative chromatic dispersion slope at a given wavelength and a section of the second kind has a chromatic dispersion not more than −x and a... | 02/03/2009 |
| 7451624 | Particle deposition system and method A deposition system for depositing a chemical vapor onto a workpiece is disclosed, including a deposition chamber having a plurality of components for performing chemical vapor deposition on the workpiece. The deposition chamber includes an inner skin made of Hastel... | 11/18/2008 |
| 7451623 | Particle deposition system and method A deposition system for depositing a chemical vapor onto a workpiece, including a deposition chamber having a plurality of components for performing chemical vapor deposition on the workpiece. The deposition chamber includes an inner skin made of Hasteloy for sealin... | 11/18/2008 |
| 7418308 | Method of optimizing glass strain A method of determining parameters of plurality of thermal cycles to achieve a set glass strain level includes providing a plurality of input parameters for a glass substrate and a plurality of parameters for a plurality of thermal cycles. The method also includes i... | 08/26/2008 |
| 7414223 | Method and apparatus for monitoring safety glass production or controlling a treatment process The invention relates to a method and apparatus for monitoring safety glass production or controlling a treatment process, such as a tempering process. Information representing a load of glass panels is used in controlling a treatment process, such as heating of gla... | 08/19/2008 |
| 7360474 | Fiber chopper and method of chopping A method and apparatus for chopping long unwound items like fiber, fiber strands, yarn, etc. The chopper has a backup roll, a blade roll and an idler roll. The improvements include one or both of a shield having an air jet at or near its upper end, the shield being ... | 04/22/2008 |
| 7353621 | Cleaning apparatus for vertical separator A cleaning apparatus for a material dryer may include an air source, a pulse nozzle selectively in fluid communication with the air source and located within a section of the solids outlet assembly, and a controller for controlling an air flow from the air source pe... | 04/08/2008 |
| 7320232 | Apparatus for fabricating holey optical fiber There is provided an apparatus and method for fabricating a holey optical fiber. An optical fiber with air holes of a predetermined size and shape along the length of the optical fiber is drawn by supplying nitrogen gas into air holes through one end of a holey opti... | 01/22/2008 |
| 7313312 | Optical fiber and method for making such fiber According to one example of the invention an optical fiber comprises: (i) silica based, rare earth doped core having a first index of refraction n1; (ii) at least one silica based cladding surrounding the core and having a second index of refraction n | 12/25/2007 |
| 7284397 | Method of controlling the polarization mode dispersion of an optical fiber during fiber drawing An optical fiber drawing installation is equipped with an oscillating pulley that applies torsion to the fiber alternately in one rotation direction and then in the opposite direction. To control the torsion applied to the fiber, images are formed of the fiber and t... | 10/23/2007 |
| 7251959 | Washwater neutralization system for glass forming line A neutralization system for controlling the pH of the washwater used to clean and maintain polyacrylic bound glass forming equipment. The neutralization system introduces a base solution to a washwater solution when the pH of the washwater solution contained in a cl... | 08/07/2007 |
| 7236671 | Fiber bundles and methods of making fiber bundles The present invention relates to fiber bundles and methods for making fiber bundles. According to one embodiment of the invention, a fused fiber bundle has a terminal section ending with an endface, and includes a plurality of optical fibers, each of the optical fib... | 06/26/2007 |
| 7228039 | High SBS threshold optical fiber with fluorine dopant The optical fiber comprises: (a) a core having a refractive index profile and a centerline; and (b) a cladding layer surrounding and directly adjacent the core; wherein core includes updoping material and is doped with F in at least one region of the core, such that... | 06/05/2007 |
| 7215857 | Process and apparatus for elongating of an optical fibre preform A process and apparatus for elongating an optical fibre preform includes heating the preform so as to soften one region thereof; elongating the preform by submitting the preform to a traction; determining, during the step of elongating, the preform diameter in at le... | 05/08/2007 |
| 7207732 | Coated optical fiber and curable compositions suitable for coating optical fiber The present invention provides materials suitable for use as secondary coatings of optical fibers or the re-coating of spliced optical fiber junctions. With regard to the latter use, the coating materials a preferably characterized by a Young's modulus that is at le... | 04/24/2007 |
| 7197898 | Robust diameter-controlled optical fiber during optical fiber drawing process There is provided robust diameter-controlled optical fiber during optical fiber drawing process and an optical fiber drawing process which comprises drawing the optical fiber from a perform therefor under tension to form the optical fiber while heating and melting t... | 04/03/2007 |
| 7174747 | Use of corrugated hose for admix recycling in fibrous glass insulation The present invention relates to a method for improving the thermal performance of fibrous glass insulation in the admix recycling of the insulation, which includes the use of corrugated hose in the recycling process. ... | 02/13/2007 |
| 7164818 | Integrated gradient index lenses Gradient index lenses are described that are integrated within a planar optical structure. The gradient index lens is optically coupled to a planar optical waveguide. In some embodiments, the gradient index lens with variation in index-of-refraction in one dimension... | 01/16/2007 |
| 7152514 | Fiber chopper apparatus and method A chopper for chopping fibers or fiber strands having a back up roll and a blade roll containing blades that work against a peripheral surface of the back up roll and a method of using is disclosed. The chopper has a number of improved features for reducing the freq... | 12/26/2006 |
| 7143612 | Method of manufacturing glass particulate sedimentary body, and method of manufacturing glass base material To provide a method for producing a glass particle deposit and a method for producing a glass preform, in which outer diameter variation of the glass particle deposit can be reduced to thereby improve quality. A flow rate of clean gas (CG) introduced into a containe... | 12/05/2006 |
| 7140786 | Method for fusion splicing optical fibers and fusion splicer A method and apparatus capable of fusion splicing optical fibers to have a low loss or a prescribed loss. The method includes (a) detecting fiber positions and core positions of optical fibers to be spliced at an abutting position and a fiber offset that is caused w... | 11/28/2006 |
| 7142755 | Optical fiber and evaluation method thereof An optical fiber characterized by a cutoff wavelength of 1310 nm or less, a transmission loss of 0.40 dB/km or less at the wavelength of 1385 nm before hydrogen ageing, a transmission loss of 0.40 dB/km or less in the wavelength range of 1310 nm to 1625 nm after hyd... | 11/28/2006 |
