Optical fiber cable preventing water from spreading toward...

Details Optical fiber cable preventing water from spreading toward... Optical fiber cable preventing water from spreading toward...

G - Physics

02

B

88/97.6

G02B 6/44 (2006.01) H01B 7/288 (2006.01)

Patent

CA 1299412

ABSTRACT OF THE DISCLOSURE Disclosed is an optical fiber cable which prevents water from running or spreading toward cable interior. The optical fiber cable comprises at least one optical fiber unit, an outermost sheath member, and water absorbing and swelling member. The optical fiber unit includes a central spacer formed with grooves, and at least one coated optical fiber or optical fiber tape disposed in each of the grooves. The outermost sheath member surrounds the optical fiber unit, and the water absorbing and swelling member is filled in spaces defined between the optical fiber unit and the outermost sheath member. The water absorbing and swelling member comprises non-water absorbing and non-swelling base and water absorbing and swelling material fixed to a surface of the base. In another embodiment of the invention, the water absorbing and swelling member is in the form of a tape in which a layer of water absorbing and swelling material is bonded to one or both surfaces of film like flexible base. The water absorbing and swelling tape member is disposed in grooves of the spacer together with optical fiber tapes.

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