Claims
- 1. A coated optical waveguide fiber comprising;an optical waveguide fiber having an outer surface, wherein said outer surface has a first coating comprising carbon, said first coating having a thickness no greater than about 100° A, and wherein the optical waveguide fiber has a dynamic fatigue constant ≧25, and at least one polymer coating surrounding and in contact with said first coating.
- 2. The coated optical waveguide fiber of claim 1 wherein said carbon coating has an electrical resistance per centimeter of waveguide length no greater than about 4 MΩ/cm.
- 3. The coated optical waveguide fiber of claim 2 wherein the electrical resistance per cm of said carbon coating is no greater than about 2.5 MΩ/cm.
- 4. A coated optical waveguide fiber, comprising:an optical waveguide fiber having an outer surface, wherein said outer surface has a first coating comprising a layer of carbon, having a thickness no greater than about 100° A, and at least one additional coating layer comprising a polymer, surrounding an in contact with said thin carbon layer, and, wherein said layer comprising carbon remains in contact with said surrounding polymer layer when immersed for at least 30 days in water, having a temperature in the range of bout 20 to 70° C.
- 5. The optical waveguide fiber of claim 4 further comprising coloring agents in said polymer coating.
- 6. The optical waveguide of claim 5 wherein the color agents produce waveguide fibers having one of the colors yellow, white, green, and red.
- 7. The coated optical waveguide fiber of claim 4 wherein the change in optical attenuation of the waveguide during and after water immersion is no greater than about 0.04 dB/km at 1310 nm and about 0.03 dB/km at 1550 nm.
Parent Case Info
This application is a 371 of PCT/U.S.98/11345 filed Jun. 3, 1998 which claims benefit of Provisional. No. 60/050,551 filed Jun. 23, 1997.
PCT Information
Filing Document |
Filing Date |
Country |
Kind |
PCT/US98/11345 |
|
WO |
00 |
Publishing Document |
Publishing Date |
Country |
Kind |
WO98/59268 |
12/30/1998 |
WO |
A |
US Referenced Citations (1)
Number |
Name |
Date |
Kind |
5062687 |
Sapsford |
Nov 1991 |
A |
Foreign Referenced Citations (2)
Number |
Date |
Country |
0 400 938 |
Dec 1990 |
EP |
0 402 895 |
Dec 1990 |
EP |
Provisional Applications (1)
|
Number |
Date |
Country |
|
60/050551 |
Jun 1997 |
US |