Optical waveguides – Optical transmission cable – Tightly confined
Reexamination Certificate
2006-03-21
2006-03-21
Connelly-Cushwa, Michelle (Department: 2874)
Optical waveguides
Optical transmission cable
Tightly confined
C385S011000, C065S430000, C065S435000, C065S438000, C065S475000
Reexamination Certificate
active
07016576
ABSTRACT:
An optical cable for telecommunications having an optical core and a plurality of protecting and reinforcing elements or avers placed around the optical core. The optical core has a central reinforcing element, a polymer layer, a plurality of optical fibers incorporated in the polymer layer and a thin sheath which covers the polymer layer. The optical fibers have an alternating spin about their own axes with a maximum value of at least 4 twists per meter, and a core having a mean ellipticity in the range of 0.25 to 0.55, in such a way that the effects of birefringence of the fibers caused by the cabling process are significantly reduced.
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Cavallaro Alfonso
Cocchini Franco
Di Nola Francesco
Mazzotti Andrea
Connelly-Cushwa Michelle
Finnegaon, Henderson, Farabow, Garrett & Dunner, L.L.P.
Pirelli S.p.A.
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