JPS6333112U

JPS6333112U -

Info

Publication number: JPS6333112U
Application number: JP12658486U
Authority: JP
Priority date: 1986-08-20
Filing date: 1986-08-20
Publication date: 1988-03-03
Also published as: JPH0440179Y2

Description

[Brief explanation of the drawing]

第１図ａ並びにｂは、本考案に従つて形成され
たテープ状光フアイバ心線の構成を示す断面図で
あり、第２図ａ乃至ｃは、本考案を適用した各種
のテープ状光フアイバ心線の形態を示すものであ
り、第３図は、従来のテープ状光フアイバ心線の
構成を示す断面図である。（主な参照番号）１…光伝送用ガラスフアイバ
、２…各光フアイバの被覆層、３…共通被覆層、
４…剥離性硬化被覆層。 1A and 1B are cross-sectional views showing the structure of a tape-shaped optical fiber core formed according to the present invention, and FIGS. 2A to 2C are cross-sectional views of various tape-shaped optical fibers to which the present invention is applied. This shows the form of the core wire, and FIG. 3 is a sectional view showing the structure of a conventional tape-shaped optical fiber core wire. (Main reference numbers) 1...Glass fiber for optical transmission, 2...Coating layer of each optical fiber, 3...Common coating layer,
4... Peelable cured coating layer.

Claims

[Claims for Utility Model Registration] (1) A plurality of optical fiber strands each having a coating layer are arranged in parallel on the same plane, and these plurality of optical fiber strands are integrally covered by a common coating layer. The tape-shaped optical fiber core wire is provided with a peelable hardened coating layer between the coating layer of each optical fiber strand and the common coating layer to inhibit adhesion or pressure contact between the two. , characterized in that the substantial thickness of the common coating layer is locally thinned over the entire length of the optical fiber at symmetrical positions in the cross section of the tape-shaped optical fiber. Tape-shaped optical fiber core wire. (2) The cross-sectional shape of the common coating layer is an ellipse with a pair of sides parallel to the arrangement plane of the optical fiber strands inside, and the thickness of both end portions of the common coating layer is equal to that of the inside. Utility model registration claim 1, characterized in that the thickness is substantially thinner than the thickness of a portion forming a plane parallel to the arrangement plane of the optical fiber strands.
Tape-shaped optical fiber core wire described in . (3) the common coating layer has a rectangular cross-sectional shape;
The thickness of the internal portion forming a plane perpendicular to the arrangement direction of the optical fiber strands is substantially thinner than the thickness of the internal part forming a plane parallel to the arrangement direction of the optical fiber strands. A tape-shaped optical fiber core according to claim 1 of the utility model registration claim, characterized in that: (4) The thickness of the peelable cured coating layer is 20 μm.
The tape-shaped optical fiber core wire according to any one of claims 1 to 3 of the utility model registration claims, characterized in that: (6) The removable cured coating layer is formed of a photocurable or thermosetting fluorine-based resin or silicone-based resin, as set forth in claims 1 to 4 of the Utility Model Registration Claims. The tape-shaped optical fiber core wire according to any one of the items.