利索-全球专利检索

  1. 登录
  2. 注册

搜索结果

69 条记录 (耗时 0.021 秒)

    Multimode optical fiber with improved bend resistance
    4.
    发明公开
    Multimode optical fiber with improved bend resistance 审中-公开
    Multimodus-Glasfaser mit verbesserter Biegefestigkeit

    公开(公告)号：EP2503368A1

    公开(公告)日：2012-09-26

    申请号：EP11305328.4

    申请日：2011-03-24

    申请人： Draka Comteq B.V.

    发明人： Molin, Denis ,  Sillard, Pierre ,  Bigot-Astruc, Marianne ,  Gooijer, Frans ,  Achten, Franciscus Johannes

    IPC分类号： G02B6/028 ,  G02B6/036

    CPC分类号： G02B6/0288 ,  G02B6/0281 ,  G02B6/0365

    摘要： This multimode optical fiber comprises an optical core surrounded by an outer cladding. The optical core comprises an inner core having a graded-index profile n(r) with a relative refractive index percent Δ = n 0 2 - n cl 2 2 ⁢ n 0 2 , where n 0 is the maximum index of the inner core and n cl is the index of the outer cladding, and having a radius r 1 between 30 µm and 50 µm, and wherein 2 ⁢ Δ r 1 is greater than or equal to 5.1×10 -3 µm -1 ; an inner cladding having a radius r 2 , wherein r 2 -r 1 is between 1 µm and 3 µm; a depressed trench having a radius r 3 , wherein r 3 -r 2 is between 3 µm and 7 µm and having a negative refractive index difference Δn 3 with respect to the outer cladding between -10×10 -3 and -5×10 -3 . At a wavelength of 850 nm, the fiber has bending losses below 0.3 dB for 2 turns for a radius of curvature of 5 mm.

    摘要翻译： 该多模光纤包括由外包层包围的光纤芯。 光芯包括具有相对折射率百分比“= n 0 2 -n cl 2 2 ¢n 0 2”的渐变折射率分布n（r）的内核，其中n 0是内芯的最大折射率 n cl为外包层的折射率，半径r 1为30μm〜50μm，2 ¢“r 1为5.1×10 -3μm-1以上; 具有半径r 2的内包层，其中r 2 -r 1在1μm和3μm之间; 具有半径r 3的凹陷沟槽，其中r 3 -r 2在3μm和7μm之间并且相对于外包层的负折射率差“n 3在-10×10 -3和-5×10 -3。 在850nm的波长下，对于2.5mm的曲率半径，光纤具有低于0.3dB的弯曲损耗，为2圈。

    Very broad bandwidth multimode optical fibre with an optimized core-cladding interface and reduced cladding effect
    8.
    发明公开
    Very broad bandwidth multimode optical fibre with an optimized core-cladding interface and reduced cladding effect 审中-公开
    多模光纤具有非常高的带宽由一个优化的芯 - 包层界面的和降低的包层效应。

    公开(公告)号：EP2259105A1

    公开(公告)日：2010-12-08

    申请号：EP10164095.1

    申请日：2010-05-27

    申请人： Draka Comteq B.V.

    发明人： Molin, Denis ,  De Jongh, Koen ,  Sillard, Pierre ,  Lumineau, Yves

    IPC分类号： G02B6/028 ,  G02B6/036

    CPC分类号： G02B6/0288 ,  G02B6/03627

    摘要： A multimode optical fibre comprising an optical core surrounded by an outer optical cladding, the optical core from the centre to the periphery: a central core having a radius (r 1 ) and an alpha-index profile with respect to an outer optical cladding, a depressed trench situated at the periphery of the central core having a width (w t ) and a refractive index difference (Δn t ) with respect to the outer optical cladding, in which the diameter of the central core has a value of 50 ± 3 µm, the width (w t ) of the depressed trench is comprised between 0.5 µm and 2 µm, and the refractive index difference (Δn t ) of the depressed trench with respect to the outer optical cladding is comprised between - 4×10 -3 and -1 ×10 -3 .

    摘要翻译： 一种多模光纤，其包括光芯由在外部光学包层，从中心到周边的光学芯所包围的：中央纤芯，其具有在外部光学包层的半径（r 1）和阿尔法折射率分布相对于，一个 位于所述中央纤芯具有宽度（w）和折射率差（“nt）的相对于所述外光包层的外周凹陷沟槽，其中中心纤芯的直径具有50±3微米的值， 凹陷沟槽的宽度（重量）为0.5微米和2微米，折射率差（“nt）的凹陷槽相对于光学外包层之间由被包括间 - 4×10 -3和-1 ×10 -3。

    Chromatic dispersion compensating and chromatic dispersion slope compensating fiber.
    10.
    发明公开
    Chromatic dispersion compensating and chromatic dispersion slope compensating fiber. 审中-公开
    Farbdispersionsausgleich und FaserfürFarbdispersionssteigungsausgleich

    公开(公告)号：EP1734390A1

    公开(公告)日：2006-12-20

    申请号：EP06076164.0

    申请日：2006-06-02

    申请人： Draka Comteq B.V.

    发明人： Sillard, Pierre ,  De Montmorillon, Louis-Anne ,  Bigot-Astruc, Marianne ,  Molin, Denis

    IPC分类号： G02B6/02

    CPC分类号： G02B6/0281 ,  G02B6/02261 ,  G02B6/0228 ,  G02B6/03666

    摘要： A chromatic dispersion compensating and dispersion slope compensating optical fiber comprises a central core having an index difference Δn 1 with an outer optical cladding, a first buried inner cladding having an index difference Δn 2 with the outer cladding, a ring having an index difference Δn 3 with the outer cladding and a second buried inner cladding having an index difference Δn 4 with the outer cladding. The index difference between the first buried inner cladding and the outer cladding Δn 2 is less than or equal to -13.5.10 -3 and the index difference between the second buried inner cladding and the outer cladding Δn 4 is less than or equal to -3.10 -3 . The fiber has, for a wavelength of 1550 nm, a chromatic dispersion less than or equal to -50 ps/nm/km and a ratio of the chromatic dispersion over the chromatic dispersion slope DOS less than or equal to 70 nm. The second deeply buried inner cladding allows obtaining a low DOS value whilst maintaining acceptable optical characteristics.

    摘要翻译： 色散补偿和色散斜率补偿光纤包括具有外部光学包层的折射率差“n 1”，与外部包层具有折射率差“n 2的第一掩埋内部包层”的中心纤芯，具有折射率差的环 “n 3与外包层和第二掩埋内包层具有与外包层的折射率差”n 4“。 第一掩埋内包层和外包层之间的折射率差n2小于或等于-13.5×10 -3，第二掩埋内包层与外包层之间的折射率差小于或等于 至-3.10 -3。 对于波长1550nm，光纤具有小于或等于-50ps / nm / km的色散和色散斜率DOS之间的色散比小于或等于70nm。 第二个深埋的内包层可以获得低的DOS值，同时保持可接受的光学特性。