Optical fiber ribbon and slot-less optical cable

Abstract

Disclosed is an optical fiber ribbon () in which a plurality of single-core coated optical fibers (-) are intermittently connected or separated in a length direction and a width direction while being connected every two cores. The optical fiber ribbon () satisfies conditional expressions [1], [2] when the length in the longitudinal direction of a connection portion () is denoted by A, the length in the longitudinal direction of a non-connection portion () in which separation portions () adjacent to each other overlap when viewing the separation portions () in the width direction is denoted by C, and the periodic interval in the longitudinal direction between the connection portions () is denoted by P. [1]: P≤150 mm [2]: A:C=25-45 mm:10-30 mm