| Patent Number |
Title Of Patent |
Date Issued |
| 6889529 |
Method of manufacturing optical fiber preform |
May 10, 2005 |
| A method for producing an optical fiber preform is provided in which the variation of the outer diameter in the longitudinal direction is minimized and a target quantity of glass is accumulated as a whole. Based on a predetermined relationship between three variables: the outer diameter |
| 6886998 |
Method for fusion splicing optical fibers and apparatus for heating spliced part by arc |
May 3, 2005 |
| An object is to provide an optical fiber fusion splicing method in which splice loss can be reduced, and also to provide an arc-heating unit used for heating the fusion spliced part of an optical fiber. The method comprises a process of fusion-splicing together the end faces of two o |
| 6854293 |
Method for fusion splicing of optical fibers |
February 15, 2005 |
| A method of fusion-splicing optical fibers having different mode field diameters or small mode field diameters is provided, which method is advantageous in that the splicing loss is smaller. The method comprises a fusion splicing process in which fusion splicing is performed by butting |
| 6817784 |
Optical fiber device and method of making the same |
November 16, 2004 |
| The present invention relates to an optical fiber device having a structure for effectively restraining the splice loss from increasing between two kinds of optical fibers having respective mode field diameters different from each other. The optical fiber device comprises first and secon |
| 6805497 |
Optical transmission line |
October 19, 2004 |
| An optical transmission line including a portion formed by fusion-splicing optical fibers having structures different from each other; wherein, in the optical fibers having structures different from each other, a first optical fiber 1 has a mode field diameter smaller than that of a seco |
| 6705772 |
Optical fiber splicing method and optical fiber |
March 16, 2004 |
| An optical fiber splicing method capable of fully reducing the splice loss at room temperature is provided. In the optical fiber splicing method in accordance with the present invention, respective end faces of optical fibers are fused together in a splicing step (S101). In a condition |
| 6666591 |
Method for connecting optical fibers |
December 23, 2003 |
| Methods for connecting two optical fibers having different mode field diameters ((MFD) with low connection loss is proposed. One method comprises steps of preparing the third fiber (Fiber 3), a short length and MFD being smaller than that of the first fiber (Fiber 1) and larger than |
| 6550985 |
Method of splicing two optical fibers |
April 22, 2003 |
| Two optical fibers to be spliced are prepared, coatings of resin are removed from end portions of the respective optical fibers to expose glass fibers, the glass fibers are aligned to each other, an a fusion step is carried out to heat the end faces of the glass fibers to cause fusion |
| 6324871 |
Process for producing optical fiber preform |
December 4, 2001 |
| In a process for producing an optical fiber preform, a starting member and a glass synthesizing burner are reciprocated relative to each other so that fine glass particles synthesized with the burner are deposited layer by layer on the starting member, and a heating power of the glass |
| 5597398 |
Process for producing glass preform for optical fiber |
January 28, 1997 |
| A process for producing a porous glass preform for optical fiber by depositing fine glass particles on an outer surface of a glass material while moving the glass material, including the steps of: preheating a portion of the glass material for not less than 5 minutes to clean the por |
| 5585137 |
Apparatus and method of manufacturing fiber |
December 17, 1996 |
| An apparatus includes a first waveguide having a first surface having a first hole through which a fiber passes, and a second surface having a second hole through which an object passes and opposing the first surface, a magic tee connected to the first waveguide, and an adjustable short |
