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    • 22. 发明授权
    • Dispersion shifted fiber for wavelength division multiplex fiber optic transmission systems
    • 用于波分复用光纤传输系统的色散位移光纤
    • US06628873B1
    • 2003-09-30
    • US09722059
    • 2000-11-27
    • Pierre SillardLouis-Anne de MontmorillonLudovic FleuryPascale Nouchi
    • Pierre SillardLouis-Anne de MontmorillonLudovic FleuryPascale Nouchi
    • G02B602
    • G02B6/02014G02B6/02271G02B6/0228G02B6/03644
    • The present invention relates to an in-cable monomode optical fiber comprising an optical core surrounded by optical cladding, said optical core presenting an index profile constituted by a stepped central part, surrounded by an intermediate zone of refractive index less than that of said central part, itself surrounded by an annular zone having refractive index less than that of said central part and greater than that of said intermediate zone, said fiber having, for a wavelength of 1550 nm, a chromatic dispersion slope in the range 0 to 0.1 ps/nm2·km, said fiber being characterized in that it further presents the following features for a wavelength of 1550 nm: an effective surface area greater than or equal to 60 &mgr;m2, a chromatic dispersion in the range 3 ps/(nm·km) to 14 ps/(nm·km), and a ratio between the effective surface area and the chromatic dispersion slope greater than 900 &mgr;m2·nm2·km/ps.
    • 本发明涉及一种包含由光学包层围绕的光学核心的光纤内单模光纤,所述光纤芯呈现由阶梯状中心部分构成的折射率分布,由折射率小于所述中心部分的折射率中间区域包围 本身被折射率小于所述中心部分的折射率的环形区域包围,并且大于所述中间区域的环形区域,所述光纤对于波长为1550nm具有在0至0.1ps / nm范围内的色散斜率 所述光纤的特征在于其进一步具有1550nm波长的以下特征:有效表面积大于或等于60μm2,色散在3ps /( nm.km)至14ps /(nm.km),并且有效表面积与色散斜率之比大于900mum.2nm .2nm / km。