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    • 1. 发明申请
    • REINFORCING SLEEVE, REINFORCING STRUCTURE OF SPLICED PORTION OF OPTICAL FIBER
    • US20220229236A1
    • 2022-07-21
    • US17578529
    • 2022-01-19
    • FURUKAWA ELECTRIC CO., LTD.
    • Tomohiro AKIYAMARyuji TAKAOKAAkio TANABE
    • G02B6/255
    • A reinforcing sleeve is a member for collectively reinforcing spliced portions of a plurality of optical fiber core wires disposed side by side. The reinforcing member includes a heat-shrinkable tube, a heat-meltable member, a tension member, and so on. The heat shrinkable tube is a cylindrical member having an approximately circular cross section. The heat-meltable member, which is a first heat-meltable member, is in a cylindrical shape having an approximately circular or elliptical cross section. The tension member is a rod-shaped member. The tension member and the heat-meltable member are inserted into the heat-shrinkable member. A thick portion is provided at a substantially center portion of a width direction of the heat-meltable member. Thus, on a cross section perpendicular to a longitudinal direction of the heat-meltable member, an amount of the heat-meltable member at proximity of the center portion of the width direction of the heat-meltable member is greater than an amount of the heat-meltable member at proximity of the end portions of the width direction of the heat-meltable member. This forms a flow of the heat-meltable member from the center portion toward the end portions in the width direction at the time of melting the heat-meltable member.