Optical fiber tape core

Details Optical fiber tape core Optical fiber tape core

Filed on

2006-10-03

Date issued

2006-10-03

Examiner

Bovernick, Rodney (Department: 2874)

Patent Class

Optical waveguides

SubClass

Optical transmission cable

SubSubClass

Ribbon cable

Other Related Categories

C385S128000

Type

Reexamination Certificate

Status

active

Patent number

07116872

Description

ABSTRACT:
In an optical fiber ribbon1according to the present invention, four optical fibers10, 20, 30and40are arranged in parallel to each other in a plane, a part of the periphery of these four optical fibers is covered with a ribbon matrix51, but no rest thereof is covered with the ribbon matrix. First areas covered with the ribbon matrix51and second areas uncovered with the ribbon matrix alternate with each other along the longitudinal direction thereof. Alternatively, the optical fiber ribbon1is covered with the ribbon matrix over its entire length. In the glass section of each optical fibers, the mode field diameter defined by the definition of Petermann-I at a wavelength of 1.55 μm is 8 μm or less, and the cable cutoff wavelength is 1.26 μm or less.

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