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    • 4. 发明专利
    • Double-core optical fiber
    • 双芯光纤
    • JP2012048248A
    • 2012-03-08
    • JP2011204325
    • 2011-09-20
    • Nippon Telegr & Teleph Corp 日本電信電話株式会社
    • TANOBE HIROMASASAKAI YOSHIHISA
    • G02B6/036
    • G02B6/03661G02B6/02042G02B6/02047G02B6/0283G02B6/03605G02B6/03616G02B6/03627
    • PROBLEM TO BE SOLVED: To provide a double-core optical fiber capable of transmitting single-mode signal light and multi-mode signal light and reducing the multi-mode transmission of the signal light propagating in the core even when the optical fiber is bent.SOLUTION: This double-core optical fiber includes: a core disposed in an axial center of a optical fiber having a refractive index 112; a first clad disposed around the outer periphery thereof and having a refractive index 122 that is smaller than the refractive index 112; and a second clad disposed around the outer periphery thereof and having a refractive index 132 that is smaller than the refractive index 122. The core serves as a core for single-mode transmission. The core and the first clad serve as a core for multi-mode transmission. The first clad serves as a clad for the core for single-mode transmission. The second clad serves as a clad for the core for the multi-mode transmission.
    • 要解决的问题:为了提供能够传输单模信号光和多模信号光的双核光纤,并且减少了在芯中传播的信号光的多模传输,即使当光纤 弯曲 解决方案:该双芯光纤包括:设置在具有折射率112的光纤的轴向中心的芯; 围绕其外周设置并具有小于折射率112的折射率122的第一包层; 以及设置在其外周周围并具有小于折射率122的折射率132的第二包层。该芯用作单模传输的核心。 核心和第一包层作为多模传输的核心。 第一个包层用作单模传输的核心。 第二个包层用作多模传输的核心。 版权所有(C)2012,JPO&INPIT