Optical fiber cable
AssigneeSumitomo Electric Industries, Ltd.
InventorsJunichi Ota, Kazuhiro Hamada, Yoshiyuki Suetugu, Hiroaki Sano, Hiroki Ishikawa
Life of this patent
Estimating the term…
Abstract
One or a plurality of reverse-lay grooves the direction of which is inverted periodically are cut in the outer circumference of a spacer, and an optical fiber tape unit or a stack of optical fiber tape units is accommodated in this groove. The length of the diagonal lines of the optical fiber tape unit or a stack of optical fiber tape units is larger than the width and depth of a bottom portion of the groove. In the inverted portion of the groove, the normal vector of the optical fiber tape unit or the stack of optical fiber tape units points to a direction perpendicular to an opening direction of the groove in the inverted portions of the groove.
Claims13
An optical fiber cable comprising:
- a spacer which is a body of said optical fiber cable;
- a reverse-lay groove being provided in an outer circumference of said spacer, said reverse-lay groove having inverted portions and being inverted periodically;
- and
- an optical fiber tape unit being accommodated in said reverse-lay groove;
- wherein a normal vector of a tape plane of said optical fiber tape unit points to a direction perpendicular to an opening direction of said groove in said inverted portions of said groove while the normal vector of the tape plane of said optical fiber tape unit points to the opening direction of said groove in intermediate portions between inverted portions of said groove.
Dependencies are inferred from the claim text.