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    SMALL BENDING RADIUS SINGLE-MODE OPTICAL FIBER WITH COMPATIBILITY
    3.
    发明公开
    SMALL BENDING RADIUS SINGLE-MODE OPTICAL FIBER WITH COMPATIBILITY 审中-公开
    MONOMODUSGLASFASER MIT KLEINEM BIEGERADIUS MITKOMPATIBILITÄT

    公开(公告)号：EP3098631A4

    公开(公告)日：2017-08-30

    申请号：EP14879549

    申请日：2014-09-23

    申请人： FIBERHOME TELECOMMUNICATION TECH CO LTD

    发明人： LUO WENYONG ,  LI SHIYU ,  CHEN WEI ,  MO QI ,  KE YILI ,  HU FUMING

    IPC分类号： G02B6/036 ,  G02B6/028

    CPC分类号： G02B6/0365 ,  C03B2201/02 ,  C03B2201/12 ,  C03B2201/31 ,  C03B2203/22 ,  C03B2203/23 ,  G02B6/03611

    摘要： Disclosed is a small bending radius single-mode optical fiber with compatibility, which relates to the field of single-mode optical fibers. The optical fiber comprises a core gradient layer, a germanium-doped core layer, a first transition layer, a first wrapping layer, a second transition layer, a second wrapping layer, a third transition layer and a third wrapping layer, said layers being arranged concentrically from the inner to the outer. The difference of relative index of refraction of the core gradient layer is ”n1, which is realized through an equation: ”n1 = a 1 (x 1 + x 1 2 + x 1 3 ) + b 1 ; the difference of relative index of refraction of the first transition layer is ”n3, which is realized through an equation: ”n3 = b 3 (1 - a 3 x 3 2 ) 0.5 ; the difference of relative index of refraction of the second transition layer is ”n5, which is realized through an equation: ”n5 = a 5 x 5 2 + b 5 ; the difference of relative index of refraction of the third transition layer is ”n7, which is realized through an equation: ”n7 = a 7 x 7 2 + b 7 . The small bending radius single-mode optical fiber with compatibility achieves a quite strong resistance to bending, the radius of which is below 2mm, and is well compatible with conventional single-mode optical fibers.

    摘要翻译： 公开了一种具有兼容性的小弯曲半径单模光纤，涉及单模光纤领域。 光纤包括芯层梯度层，掺锗核心层，第一过渡层，第一包裹层，第二过渡层，第二包裹层，第三过渡层和第三包裹层，所述层被布置 同心地从内到外。 核心梯度层的相对折射率差为“n1，其通过以下等式来实现：”n1 = a 1（x 1 + x 1 2 + x 1 3）+ b 1; 第一过渡层的相对折射率的差值为“n3，其通过以下等式来实现：”n3 = b 3（1-a 3 x 3 2）0.5; 第二过渡层的相对折射率的差值为“n5，其通过以下等式来实现：”n5 = a 5 x 5 2 + b 5; 第三过渡层的相对折射率的差值为“n7，其通过以下等式来实现：”n7 = a 7 x 7 2 + b 7。 具有兼容性的小弯曲半径单模光纤实现了相当强的抗弯曲能力，其半径在2mm以下，并且与传统的单模光纤很好地兼容。

    OPTICAL FIBER AND OPTICAL FIBER TRANSMISSION PATH
    4.
    发明公开
    OPTICAL FIBER AND OPTICAL FIBER TRANSMISSION PATH 审中-公开
    光纤和光纤传输路径

    公开(公告)号：EP3187914A1

    公开(公告)日：2017-07-05

    申请号：EP15836456.2

    申请日：2015-08-27

    申请人： Sumitomo Electric Industries, Ltd.

    发明人： KAWAGUCHI Yuki ,  YAMAMOTO Yoshinori ,  HIRANO Masaaki

    IPC分类号： G02B6/036

    CPC分类号： G02B6/03627 ,  C03B2203/22 ,  C03B2203/23 ,  C03B2203/24 ,  G02B6/02019 ,  G02B6/03611 ,  G02B6/0365

    摘要： The present embodiment relates to an optical fiber having a W-type refractive index d profile or a trench-type refractive index profile and having reduced microbending loss in a wavelength band to be actually used. The optical fiber includes a center core, an inner cladding surrounding the center core, and an outer cladding surrounding the inner cladding. The inner cladding has a refractive index lower than a refractive index of at least the center core and the outer cladding has a refractive index lower than the refractive index of the center core and higher than the refractive index of the inner cladding. Wavelength dependency of microbending loss has a local maximal value and a shortest wavelength λ th where the microbending loss becomes 10% of the local maximal value is longer than 1560 nm.

    摘要翻译： 本实施例涉及具有W型折射率d分布或沟槽型折射率分布并且在实际使用的波段中具有减少的微弯损耗的光纤。 光纤包括中心芯，围绕中心芯的内包层以及围绕内包层的外包层。 内包层具有比至少中心纤芯的折射率低的折射率，并且外包层具有比中心纤芯的折射率低并且高于内包层的折射率的折射率。 微弯损耗的波长依赖性具有局部最大值和最短波长λth，其中微弯损耗变为局部最大值的10％比1560nm长。

    SINGLE MODE OPTICAL FIBER WITH DEPRESSED TRENCH
    5.
    发明公开
    SINGLE MODE OPTICAL FIBER WITH DEPRESSED TRENCH 审中-公开
    EINZELMODEN-GLASFASER MIT GRABENEINSATZ

    公开(公告)号：EP3156831A1

    公开(公告)日：2017-04-19

    申请号：EP16202564.7

    申请日：2010-10-12

    申请人： Draka Comteq B.V.

    发明人： BIGOT-ASTRUC, Marianne ,  SILLARD, Pierre ,  MONTMORILLON, Louis-Anne ,  MOLIN, Denis ,  RICHARD, Simon

    IPC分类号： G02B6/036

    CPC分类号： G02B6/0365 ,  C03B2201/12 ,  C03B2201/31 ,  C03B2203/22 ,  C03B2203/23 ,  G02B6/03683 ,  G02B6/03688

    摘要： The invention relates to an optical fiber comprising an outer optical cladding and an optical core. The optical core comprises, from the center towards the periphery: a central core having a radius and a refractive index difference with respect to the outer optical cladding; and a depressed inner cladding. The depressed inner cladding includes at least a first portion having a radius and a refractive index difference with respect to the outer optical cladding, the first portion preferably being adjacent to the central core; a second portion adjacent to the first portion constituting a depressed trench having a radius, and a refractive index difference with respect to the outer optical cladding. The first portion of the inner cladding has a refractive index below the refractive index of the outer optical cladding, and the depressed trench - i.e. the second portion - has a refractive index that is lower than - i.e. more negative than - the refractive index of the first portion of the depressed inner cladding. The outer radius of the depressed inner cladding of the optical fiber is between 28 µm and 40 µm, the LP01 mode leakage losses at a wavelength of 1550 nm are less than 0.01 dB/km and the cable cut-off wavelength is less than 1530 nm.

    摘要翻译： 本发明涉及一种包括外部光学包层和光学核心的光纤。 光学芯从中心向外围包括：具有相对于外部光学包层的半径和折射率差异的中心纤芯; 和凹陷的内包层。 凹陷的内包层至少包括具有相对于外光学包层的半径和折射率差的第一部分，第一部分优选地邻近中心芯; 与构成具有半径的凹槽的第一部分相邻的第二部分和相对于外部光学包层的折射率差。 内包层的第一部分具有低于外光学包层的折射率的折射率，并且凹陷沟槽即第二部分具有低于折射率的折射率，即比 - 凹陷的内包层的第一部分。 光纤凹陷的内包层的外半径在28μm和40μm之间，1550nm波长处的LP01模式泄漏损耗小于0.01dB / km，电缆截止波长小于1530nm 。

    Single mode optical fiber
    9.
    发明公开
    Single mode optical fiber 有权
    单模-glasfaser

    公开(公告)号：EP2533082A1

    公开(公告)日：2012-12-12

    申请号：EP11305726.9

    申请日：2011-06-09

    申请人： Draka Comteq BV

    发明人： Bigot-Astruc, Marianne ,  Sillard, Pierre

    IPC分类号： G02B6/036

    CPC分类号： G02B6/03666 ,  C03B37/01807 ,  C03B2201/12 ,  C03B2203/23 ,  G02B6/03616 ,  G02B6/03661 ,  G02B6/03688

    摘要： A single mode optical fiber comprises from center to periphery:
    - a core having a radius (a) and an index difference (Dn 1 ) with outer cladding (Dn cl ) comprised between -0.5.10 -3 and 0.5.10 -3 ;
    - an inner depressed cladding having a radius (r ring1 ) and an index difference (Dn inner ) with outer cladding ;
    - a ring having an inner radius (r ring1 ) comprised between 21µm and 35µm, an outer radius (r ring2 ) and an index difference (Dn ring ) with the outer cladding comprised between -0.5.10 -3 and 0.5.10 -3 ;
    - an outer depressed cladding having a radius (r out ) and an index difference (Dn out ) with outer cladding.
    The fiber has a ratio of the volume of the core over the width of the ring (W ring ) comprised between 0.12µm and 0.2µm and the outer depressed cladding has a volume comprised between 15 µm 2 and 30 µm 2 .
    A low cost preform with increased capacity can be obtained.

    摘要翻译： 单模光纤从中心到周边包括： - 半径（a）和外包层（Dnc1）的折射率差（Dn1）在-0.5.10-3和0.5.10-3之间的芯; - 具有外包层的半径（r ring1）和折射率差（Dn inner）的内凹陷包层; - 具有21μm和35μm之间的内半径（r ring1），外包层的外半径（r ring2）和折射率差（Dn ring）的环包含在-0.5.10 -3和0.5.10 -3之间 ; - 具有外包层的半径（r out）和折射率差（Dn out）的外凹陷包层。 纤维的芯体的体积在环宽度（W环）之间的比例为0.12μm和0.2μm之间，而外部凹陷的包层的体积为15μm2和30μm2之间。 可以获得具有增加容量的低成本预成型件。