| Class / Patent application number | Description | Number of patent applications / Date published |
|---|
| 065434000 | With quench cooling (e.g., forced air or cryogenic immersion, etc.) | 6 |
| 20090139270 | Fiber air turn for low attenuation fiber - A method for forming an optical fiber includes drawing the optical fiber from a glass supply and treating the fiber by maintaining the optical fiber in a treatment zone wherein the fiber is cooled at a specified cooling rate. The optical fiber treatment reduces the tendency of the optical fiber to increase in attenuation due to Rayleigh scattering, and/or over time following formation of the optical fiber due to heat aging. Methods for producing optical fibers along nonlinear paths incorporating fluid bearings are also provided thereby allowing for increased vertical space for the fiber treatment zone. | 06-04-2009 |
| 20100064731 | Thermally Stable IR-Transmitting Chalcogenide Glass - A thermally stable chalcogenide glass, a process for making the same, and an optical fiber drawn therefrom are provided. A chalcogenide glass having the composition Ge | 03-18-2010 |
| 20100107701 | OPTICAL FIBER MANUFACTURING METHOD AND OPTICAL FIBER MANUFACTURING APPARATUS - An optical fiber apparatus and manufacturing method thereof includes: forming a bare optical fiber by melting and deforming an optical fiber preform; cooling the bare optical fiber after the bare optical fiber forming step by passing it through a flow channel of a cooling unit through which cooling gas flows; and forming a protective coating layer by supplying a molten resin to a periphery of the bare optical fiber after the cooling step thereby forming an optical fiber. The cooling gas flowing toward a vertically lower end of the flow channel is blocked by the molten resin used to form the protective coating layer, and carbon dioxide gas is supplied toward the flow channel from a position which is vertically below the supply position of the cooling gas and vertically above the blocking position of the molten resin. | 05-06-2010 |
| 20120260697 | SYSTEMS AND METHODS FOR COOLING OPTICAL FIBER - In one embodiment, an optical fiber cooling system includes a first cooling tube oriented substantially in parallel with and spaced apart from a second cooling tube such that an optical fiber pathway is positioned between the first cooling tube and the second cooling tube. The first cooling tube includes a plurality of cooling fluid outlets positioned along an axial length of the first cooling tube which are oriented to direct a flow of cooling fluid across the optical fiber pathway towards the second cooling tube. The second cooling tube includes a plurality of cooling fluid outlets positioned along an axial length of the second cooling tube which are oriented to direct a flow of cooling fluid across the optical fiber pathway towards the first cooling tube. | 10-18-2012 |
| 20140096565 | METHODS AND APPARATUSES FOR COOLING OPTICAL FIBERS - Methods and apparatuses for cooling optical fibers are disclosed. In one embodiment, In some embodiments, a cooling apparatus for cooling an optical fiber in a production process includes a channel defined by at least one sidewall assembly and a plurality of interior cavities positioned along the interior of the sidewall assembly. The interior cavities include at least one plenum, a first plurality of fluid supply cavities in fluid communication with the at least one plenum, and a second plurality of fluid supply cavities in fluid communication with the at least one plenum. Cooling fluid is supplied from the at least one plenum to the first plurality of fluid supply cavities in a first direction and the second plurality of fluid supply cavities in a second direction opposite the first direction. | 04-10-2014 |
| 20150101368 | OPTICAL FIBER COOLING APPARATUS AND OPTICAL FIBER MANUFACTURING METHOD - When a lower gauge pressure of a cooling tube part is set at A, and the number of divided units of the cooling tube part is set at N, and a length of each of the divided units of the cooling tube part is set at Li (i=1 to N), and a radius of each of the divided units of the cooling tube part is set at Ri (i=1 to N), and a gas flow rate of a coolant gas passed through each of the divided units of the cooling tube part is set at Qi (i=1 to N), and a viscosity coefficient of a coolant gas is set at μ1, and a radius of an optical fiber is set at r1, and a drawing speed of the optical fiber is set at V1, and a pressure loss of a straight tube part is set at B, and the number of divided units of the straight tube part is set at n, and a length of each of the divided units of the straight tube part is set at LLj (j=1 to n), and a radius of each of the divided units of the straight tube part is set at RRj (j=1 to n), and a gas flow rate of a pressurized gas passed through the straight tube part is set at Q | 04-16-2015 |
