OPTICAL FIBER AND OPTICAL CABLE

• Main Authors: HONMA YUYA, SAKABE ITARU
• Format: Patent
• Language: English; Japanese
• Published: 23.07.2015
• Subjects: CHEMICAL COMPOSITION OF GLASSES, GLAZES, OR VITREOUSENAMELS; CHEMISTRY; GLASS; JOINING GLASS TO GLASS OR OTHER MATERIALS; METALLURGY; MINERAL OR SLAG WOOL; OPTICAL ELEMENTS, SYSTEMS, OR APPARATUS; OPTICS; PHYSICS; SURFACE TREATMENT OF FIBRES OR FILAMENTS MADE FROM GLASS,MINERALS OR SLAGS; SURFACE TREATMENT OF GLASS

PROBLEM TO BE SOLVED: To provide an optical fiber and an optical cable having good rupture characteristics and excellent optical characteristics.SOLUTION: Optical fibers B1 and B2 each comprise: a glass part 18 which includes a core 11 and a clad 12 surrounding the core 11; and a resin part 19 which includes a non-releasable resin layer 13 covering the surface of the glass part 18 and containing an ultraviolet curable resin, and a buffer layer 16 covering the non-releasable resin layer 13 and containing an ultraviolet curable resin. The core 11 has a diameter of 20-80 μm, and the non-releasable resin layer 13 has an outer diameter of 120-127 μm. When flexural rigidity of the glass part 18 is denoted by EI(g) and the flexural rigidity of the resin part 19 is denoted by EI(r), EI(g)≥EI(r) is satisfied. 【課題】良好な破断特性および優れた光学特性を有する光ファイバおよび光ケーブルを提供する。【解決手段】光ファイバＢ１およびＢ２は、コア１１及びコア１１を取り囲むクラッド１２を含むガラス部分１８と、ガラス部分１８の表面を覆っており紫外線硬化樹脂を含む非剥離性樹脂層１３、及び非剥離性樹脂層１３を覆い紫外線硬化樹脂を含むバッファ層１６を含む樹脂部分１９と、を備える。コア１１の径は２０〜８０μｍであり、非剥離性樹脂層１３の外径は１２０〜１２７μｍであり、ガラス部分１８の曲げ剛性をＥＩ（ｇ）とし、樹脂部分１９の曲げ剛性をＥＩ（ｒ）としたときに、ＥＩ（ｇ） ＥＩ（ｒ）を満たす。【選択図】図１