Optical fiber cable coated with conductive metal coating and pro

Details Optical fiber cable coated with conductive metal coating and pro Optical fiber cable coated with conductive metal coating and pro

1990-08-27

1992-03-03

Ullah, Akm

Optical waveguides

Optical transmission cable

385128, 385141, 65DIG16, G02B 514, G02B 110

Patent

active

050938800

ABSTRACT:
An optical fiber cable free from a generation of a microbent during manufacturing, and in which an impregnation of hydrogen and/or water to a cladding is prevented, and having high electrical conduction, tolerance to heat and mechanical strength, and a process for making same. The optical fiber cable includes a silica based glass optical fiber including a core and a cladding, a thin carbon coating formed on an outer surface of the optical fiber, and an electrically conductive coating formed on an outer surface of the carbon coating. The carbon coating functions as a layer for preventing the impregnation of hydrogen and/or water to the optical fiber, and the conductive coating functions as a heat tolerance member, a conductive member, and a mechanical support member. The carbon coating is preferably formed as an amorphous carbon layer. Preferably, the conductive coating can be made of materials having a good contact with the carbon coating, a high conductivity, a high heat tolerance, and a high strength, and can be formed as thin as possible. The conductive coating can be formed by a plurality of different metal layers having different thickness.

REFERENCES:
patent: 4183621 (1980-01-01), Kao et al.
patent: 4402993 (1983-09-01), Aisenberg et al.
patent: 4468294 (1984-08-01), Hocker et al.
patent: 4512629 (1985-04-01), Hanson et al.
patent: 4530750 (1985-07-01), Aisenberg et al.
patent: 4735856 (1988-04-01), Schultz et al.
"Reducing Loss of Metal Coated Fiber", Tanaka et al., National Convention Record, The Institute of Electronics, Information and Communication Engineers, 1985, pp. 4-207.
Database Wpil No. 90-104388, Derwent Publications Ltd., London, GB; & JP - A 880320451, Jun. 27, 1990.
Patent Abstracts of Japan, vol. 11, No. 371 (C-462)(2818), 3 Dec. 1987; & JP - A - 62143848, Jun. 27, 1987.

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