Optical waveguides – Optical transmission cable – Tightly confined
Patent
1991-02-06
1993-03-16
Ullah, Akm E.
Optical waveguides
Optical transmission cable
Tightly confined
G02B 600, G02B 636
Patent
active
051951584
ABSTRACT:
A fiber optic groundwire or static cable for use between spaced-apart support towers of an electrical power transmission network, for ground fault protection from lightning strikes and other electrical faults, with an integral fiber optic telecommunications bundle. A bundle of optical fibers tightly enclosed by a pliable thremally insulating strain jacket is firmly affixed into a helically-wound channel within an electrically conductive core. At least one layer of stranded electrical conductors serving as strength members completely surrounds the core. The tight jacketing of the optical fibers by a pliable strain jacket, combined with the firm mounting of the strain jacket within the helical channel of the core, reduces the axial tensional forces on the optical fibers that occur during and after installation of the cable. Also, the cable provides improved fault current carrying capability by utilizing a strain jacket made from a high temperature and thermally insulating silicone-based or ethylene propylene-based material. Because the fiber optic bundles are tight buffered in the strain jacket and the strain jacket is tightly affixed in the channels of the core rather than in loose in the strain jacket, the cable accommodates more optical fibers per unit area of channel than prior art "loose tube" construction, which allow the fibers to move relative to one another and relative to the cable core.
REFERENCES:
patent: 32374 (1987-03-01), Dey et al.
patent: 4078853 (1978-03-01), Kempf et al.
patent: 4359598 (1982-11-01), Dey et al.
patent: 4416508 (1983-11-01), Dey et al.
patent: 4491386 (1985-01-01), Negishi et al.
patent: 4491387 (1985-01-01), Dey et al.
patent: 4497164 (1985-02-01), Dotti et al.
patent: 4757675 (1988-07-01), Oglesby et al.
patent: 4775213 (1988-10-01), Kitayama
patent: 4784461 (1988-11-01), Abe et al.
patent: 4801192 (1989-01-01), Wehner
patent: 4807962 (1989-02-01), Arroyo et al.
patent: 4865415 (1989-09-01), Kitayama
patent: 4944570 (1990-07-01), Oglesby et al.
Design and Performance Review of Optical Static Wire "A Second Generation"; Author: Cornelison, et al.; Date: 1986.
Optical Fiber Communications-Principles and Practice; Author: Senior, John M.; Date: 1984.
Fiber Optics Applications in Transmission Line Design at Duke Power Company; Author: Parker, et al., paper; Apr. 1985.
Hitachi OPGW Composite Fiber Optic Overhead Ground Wire; Author: Hitachi Cable, Ltd.; Printed: Apr. 1990.
Sumitomo Electric Industries OPGW; Author: Alcan Cable; Date; Feb. 1986.
Composite Fiber-Optic Overhead Ground Wire OPGW; Author: Alcan Sumitomo; Date: 1987.
Improved Composite Fiber-Optic Overhead Ground Wire; Author; Saito et al. (Sumitomo): Date; Sep. 1984.
Long-term Reliability of Optical Fiber Composite Ground Wire; Author; Ogai et al, (Furukawa); Date: 1985.
New Composite Fiber-Optic Overhead Ground Wire; Author: Nishiyama, et al.; Date: 1986.
Development of High Performace Composite Fiber-Optic Overhead Ground Wire; Author: Nagaki, et al.; Date 1986.
Optical Fiber Ground Wire; Author: Bianchi, et al.; 1987.
Development of Optical Ground Wire for 1.55 um Wavelength; Author: Lin et al., (Sumitomo); Date: 1987.
Suitable Design and Characteristic of Optical Ground Wire for 1.55 um Wavelength; Author: Kawasaki et al. (Hitachi); Date 1988.
Optical Ground Wire Design With a Minimum of Dielectics; Author: Schneider, et al.; Date: 1988.
Development of a Composite Fiber-Optic Ground Wire; Author: Kawahira et al.; Date: 1984.
Composite Fiber-Optic Overhead Ground Wire; Author: Igarashi, et al.; Date: 1980.
FOCAS Skylited Product Brochure; Author: FOCAS, Inc.
Optical Static Wire Product Specifications; Author: Ericsson, Production; Date: 1986.
Test Results of the Initial Qualification Testing for Optical Static Wire: Author: Ericsson Light Wire V Fiber Optic Ground Wire; Author: Kaiser Aluminum.
The Focal Point: Author: Siecor.
FIBRAL Delivers Communications and Power in One Cable on Three Continents; Author: Phillips Cables, Inc.; Date: 1987.
Optical Static Wire; Author: Reynolds/Ericsson; Date: 1986.
Overhead Line Conductors Containing Optical Fibers--a New Approach To; Author: Alexander, Phillips; Date 1984.
Alcoa Fujikura Ltd.-Optical Fiber Cables and Systems; Author: Alcoa Fujikura Ltd.; Date: 1986.
Reynolds Ericsson-Fiber Optic Cable Products; Author: Reynolds Ericsson; Date: 1986.
Alcoa Fujikura Ltd. Optical Fiber Cables and Systems; Author: Alcoa Fujikura, Ltd.; Date: 1986.
Optopia-Composite Fiber-Optic Overhead Ground Wires OPGW's; Author: Sumitomo Electric; Date: 1984.
Fiber Optic Cable; Author: Pirelli Cable; date unknown.
Fibergard--Optical Static Wire; Author: Reynolds Ericsson.
Composite Fiber-Optic Ground Wire; Author: Matsubara et al; Date: 1986.
LightWire--The Ultimate in Loose Buffer V Technology . . . From Kaiser, Author: Kaiser Aluminum.
Appendix A-Optical Requirements; Author: Alcoa Fujikura Ltd.; Date: 1989.
Reynolds/Ericsson Fiber Optic Cable Products; Author: Reynolds/Ericsson; Date: 1985.
Optical Ground Wire; Author: Reynolds Metals; Date Sep. 24, 1985.
Alternative Approaches to Optical Fibre Cable Making; Author: Slaughter, et al., Date: 1977.
Optical Fibre Packaging in Loose Fitting Tubes of Orientated Polymer, Author: Jackson, et al., Optical; Date: Mar. 7, 1977.
Optical Fibre Communication; Author: book, Technical Staff CSAT, 1980.
Bottoms, Jr. Jack
Carter Charles L.
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