Chromatic dispersion compensation optical fiber
    3.
    发明授权
    Chromatic dispersion compensation optical fiber 失效
    色散补偿光纤

    公开(公告)号:US07006743B2

    公开(公告)日:2006-02-28

    申请号:US10673454

    申请日:2003-09-30

    IPC分类号: G02B6/02 G02B6/16 G02B6/22

    摘要: The invention relates to a multiband chromatic dispersion compensation optical fiber comprising successively, from the center toward the periphery, a central slice whose maximum index is higher than the index of the cladding, a buried slice whose minimum index is lower than the index of the cladding, and an annular slice whose maximum index is higher than the index of the cladding and lower than the maximum index of the central slice, a cladding of constant index, and having, on the one hand, at the wavelength of 1550 nm, firstly a chromatic dispersion of less than −8 ps/nm.km, secondly a chromatic dispersion to dispersion slope ratio whose absolute value is greater than 750 nm, and thirdly a mode diameter greater than 5 μm, and on the other hand, at the wavelength of 1625 nm, bending losses for a radius of 10 mm that are less than 400 dB/m.

    摘要翻译: 本发明涉及一种多波段色散补偿光纤,包括从中心向外围依次包括最大折射率高于包层的折射率的中心切片,其最小折射率低于包层的折射率的掩埋切片 ,以及最大折射率高于包层的折射率并低于中心片的最大折射率的环形片,恒定折射率的包层,并且一方面在1550nm的波长处,首先是 色散小于-8ps / nm.km,其次为绝对值大于750nm的色散斜率比的色散,第三种模式直径大于5um,另一方面,波长为 1625 nm,半径为10mm的弯曲损耗小于400 dB / m。

    Chromatic dispersion compensation in an optical fiber transmission system, and a compensation fiber
    7.
    发明授权
    Chromatic dispersion compensation in an optical fiber transmission system, and a compensation fiber 有权
    光纤传输系统中的色散补偿和补偿光纤

    公开(公告)号:US06574407B2

    公开(公告)日:2003-06-03

    申请号:US09975959

    申请日:2001-10-15

    IPC分类号: G02B602

    摘要: The invention proposes providing an optical fiber transmission system with a dispersion compensating fiber 12l to 12n to compensate the chromatic dispersion and chromatic dispersion slope of the line fiber 6l to 6n; the dispersion compensating fiber satisfies the following criteria: C g C g ′ × 1 1 + C cum / ( L g · C g ′ · Δ ⁢   ⁢ λ ) ≤ C C ′ ≤ C g C g ′ × 1 1 - C cum / ( L g · C g ′ · Δ ⁢   ⁢ λ ) ( 1 ) &LeftBracketingBar; C ′ C ′′ &RightBracketingBar; ≥ Max ⁡ ( Δ ⁢   ⁢ λ 2 × ( C · C g ′ C ′ · C g × ( 1 ± C cum L g · C g ′ · Δ ⁢   ⁢ λ ) - 1 ) - 1 ) ( 2 ) where C, C′ et C″ are the chromatic dispersion, the chromatic dispersion slope and the first derivative of the chromatic dispersion slope of the dispersion compensating fiber, Cg and C′g are the chromatic dispersion and the chromatic dispersion slope of the line fiber, Ccum is the upper limit of the modulus of the cumulative chromatic dispersion in the transmission system, Lg is the length of a line fiber section, and &Dgr;&lgr; is half the bandwidth of the transmission system. The invention also proposes optical fibers verifying the above criteria and suitable for compensating the chromatic dispersion of step index or dispersion shifted line fiber. The proposed criteria compensate chromatic dispersion and chromatic dispersion slope in wideband transmission systems, e.g. in C band and L band transmission systems, for wavelengths from 1530 to 1620 nm.

    摘要翻译: 本发明提供一种具有色散补偿光纤12l至12n的光纤传输系统,以补偿线路光纤161至6n的色散和色散斜率; 色散补偿光纤满足以下标准:其中C,C'和C“是色散,色散补偿光纤的色散斜率和色散斜率的一阶导数Cg和C'g是色度 色散和色散斜率,Ccum是传输系统中累积色散的模数的上限,Lg是线光纤部分的长度,DELTAlambd是传输系统带宽的一半。 本发明还提出了验证上述标准并适用于补偿阶跃折射率或色散位移线光纤的色散的光纤。所提出的准则补偿宽带传输系统中的色散和色散斜率,例如 在C波段和L波段传输系统中,对于1530至1620nm的波长。