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    OPTISCHE SINGLE-MODE-LICHTLEITFASER
    3.
    发明公开
    OPTISCHE SINGLE-MODE-LICHTLEITFASER 有权
    光学单模光纤

    公开(公告)号：EP1112518A1

    公开(公告)日：2001-07-04

    申请号：EP99942906.1

    申请日：1999-08-23

    申请人： Deutsche Telekom AG

    发明人： DULTZ, Wolfgang ,  BONESS, Reiner ,  VOBIAN, Joachim

    IPC分类号： G02B6/16 ,  G02B6/22

    CPC分类号： G02B6/0281 ,  G02B6/02228 ,  G02B6/03644

    摘要： The invention relates to a single-mode low-dispersion optical fiber for wavelength division multiplexing (WDM) of an optical transmission link, comprising a central fiber core with a radius r1, two inner layers of cladding with an outer radius r2 or a, whereby a is greater than r2, and an outer layer of cladding, whereby the refractive index n(r) of the fibers is inconstant as a function of the fibre radius r (a triple clad fiber). A fiber with a low dispersion in the wavelength range of approximately 1400 - 1700 nm, i.e. in the third optical window, can be manufactured using conventional production methods by selecting the appropriate profile and refractive index differentials between the core and or cladding without increasing the attenuation of said fibers. The transmission quality and output of an optical transmission link is increased by the inventive fibers in comparison with other standard optical fibers.