OPTICAL FIBER
    35.
    发明公开
    OPTICAL FIBER 审中-公开
    光纤

    公开(公告)号:EP3153898A1

    公开(公告)日:2017-04-12

    申请号:EP15802920.7

    申请日:2015-06-03

    IPC分类号: G02B6/036

    摘要: Provided is an optical fiber having W-shaped refractive-index distribution and in which a micro-bend loss in an actual usage waveband is reduced. The optical fiber includes a core, inner cladding that surrounds the core and has a refractive index smaller than a refractive index of the core, and outer cladding that surrounds the inner cladding and has a refractive index smaller than the refractive index of the core and larger than the refractive index of the inner cladding. When a coupling coefficient between a fundamental mode and a cladding mode is denoted by C 01-CL , a coupling coefficient between the fundamental mode and a higher-order mode is denoted by C 01-11 , and a coupling coefficient between the higher-order mode and the cladding mode is denoted by C 11-CL , C total defined as C total = C 01-CL + C 01-11 C 11-CL has a minimum value at a wavelength ranging between 1520 nm and 1630 nm.

    摘要翻译: 提供一种具有W形折射率分布并且其中实际使用波段中的微弯损耗减小的光纤。 光纤包括芯,包围芯的折射率小于芯的折射率的内包层和包围内包层的折射率小于芯的折射率的折射率大的外包层 比内包层的折射率低。 当基模和包层模之间的耦合系数由C01-CL表示时,基模和高阶模之间的耦合系数由C01-11表示,而高阶模和 包层模式由C11-CL表示,Ctotal定义为Ctotal = C01-CL + C01-11C11-CL在1520nm和1630nm之间的波长处具有最小值。