| US 7,469,088 B2 | ||
| Strengthened optical waveguide fiber cable | ||
| Klaus Nothofer, Erkrath (Germany); and Peter Lausch, Krefeld (Germany) | ||
| Assigned to Draka Comteq B.V., Amsterdam (Netherlands) | ||
| Filed on Aug. 31, 2007, as Appl. No. 11/848,740. | ||
| Claims priority of application No. PCT/NL2006/000439 (WO), filed on Aug. 31, 2006. | ||
| Prior Publication US 2008/0056652 A1, Mar. 06, 2008 | ||
| Int. Cl. G02B 6/44 (2006.01) | ||
| U.S. Cl. 385—113 [385/110] | 13 Claims |
| 1. A loose tube optical waveguide fiber cable that is suitable for fixed in-house cabling for large-scale installation of
fiber-to-the-home (FTTH), said cable comprising:
(a) two or more optical waveguides;
(b) a protective tube loosely surrounding said two or more optical waveguides, said protective tube comprising an inner surface
and an outer surface, wherein the wall thickness of the protective tube is in a range of 0.3 to 0.45 times the outer diameter
of the protective tube, and wherein said cable contains no gel-like compounds; and
(c) one or more strengthening members being disposed between the inner surface of the protective tube and the outer surface
of the protective tube as one or more longitudinal strengthening elements or as a layered strengthening element, wherein said
one or more strengthening members extend continuously along the length of the protective tube.
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