Optical waveguides – Optical transmission cable – Tightly confined
Patent
1995-08-02
1997-04-08
Ullah, Akm E.
Optical waveguides
Optical transmission cable
Tightly confined
G02B 644
Patent
active
056196067
ABSTRACT:
The present invention relates to a method of manufacturing a cable containing optical fibers, the cable including an optical core assembly surrounded by a plurality of mechanical reinforcing members made of a plastics material reinforced with reinforcing fibers, referred to as an "FRP" material, the reinforcing members being disposed helically around said core assembly so as to form a reinforcing tube, said reinforcing members having a thermal expansion coefficient that is lower than those of the remaining portions of said cable and a Young's modulus that is higher than those of the remaining portions of said cable other than said optical fibers. The method includes the following steps: simultaneously manufacturing said reinforcing members on their own and by coating said reinforcing fibers with the plastics material, without the material being polymerized; winding said reinforcing members around said optical core assembly, while interposing a separator made of a plastics material having low adhesion to said FRP material between each of said reinforcing members, so as to separate them; and polymerizing said plastics material.
REFERENCES:
patent: 4221854 (1980-09-01), Hammar et al.
patent: 4740538 (1988-04-01), Sekutowski
patent: 4770489 (1988-09-01), Saito et al.
patent: 5051308 (1991-09-01), Reed et al.
patent: 5413657 (1995-05-01), Yamanashi et al.
Alcatel Cable
Ullah Akm E.
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