Optical waveguides – Optical transmission cable – Tightly confined
Patent
1993-03-05
1994-10-04
Healy, Brian
Optical waveguides
Optical transmission cable
Tightly confined
385114, 385123, 385126, 385142, 65409, 65425, 65430, G02B 644, G02B 622, C03C 2502
Patent
active
053533658
ABSTRACT:
A multi-waveguide cylindrical optical conductor for telecommunications cable, the conductor comprising a plurality of optical fibers, each of which is a unit cylindrical fiber constituted by a core and by cladding, the unit fibers are all connected together by silica after a fiber-drawing operation, wherein said core of said unit cylindrical fiber has a diameter of about 8 .mu.m to 10 .mu.m, wherein said cladding has an outside diameter lying in the range 25 .mu.m to 35 .mu.m, and wherein all of the cores of said unit fibers are either situated regularly on generator lines of a cylinder having the same axis as said conductor, or else are parallel with one another and are coplanar. An optical conductor can thus be obtained having an outside diameter of 125 .mu.m and containing six waveguides each having a diameter of about 25 .mu.m to 35 .mu.m.
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Dumas Jean-Pierre
Jocteur Robert
Alcatel Cable
Healy Brian
LandOfFree
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