Optical communication system as well as a access network provided therewith
    31.
    发明授权
    Optical communication system as well as a access network provided therewith 有权
    光通信系统以及与其通信的接入网

    公开(公告)号:US07826691B2

    公开(公告)日:2010-11-02

    申请号:US11381440

    申请日:2006-05-03

    CPC classification number: H04B10/2581

    Abstract: The invention relates to an access network for exchanging communication signals between a transit network and at least one communication medium of a user. The communication medium is operatively connected to an exchange by means of an optical fiber connection for exchanging the communication signals, and the exchange is connected to the transit network. The fiber connection comprises at least one multimode fiber, which is bent over at least one first part of its length, in such a manner that the fiber comprises at least one complete winding in the first part thereof mainly for maintaining one or more modes of the communication signals into the fiber. Said modes have been selected from a group comprising the ground mode and one or more lower modes near the ground mode.

    Abstract translation: 本发明涉及用于在运输网络和用户的至少一个通信介质之间交换通信信号的接入网络。 通信介质通过用于交换通信信号的光纤连接可操作地连接到交换机,并且交换机连接到转接网络。 光纤连接包括至少一个多模光纤,其在其长度的至少一个第一部分上弯曲,使得光纤在其第一部分中包括至少一个完整绕组,主要用于保持一个或多个模式 通信信号进入光纤。 所述模式已经从包括接地模式的组和在接地模式附近的一个或多个下模模式中选出。

    Fluorine-Doped Optical Fiber
    36.
    发明申请
    Fluorine-Doped Optical Fiber 有权
    氟掺杂光纤

    公开(公告)号:US20090185780A1

    公开(公告)日:2009-07-23

    申请号:US12412746

    申请日:2009-03-27

    CPC classification number: C03C13/046 G02B6/02 G02B6/03633

    Abstract: A single mode optical transmission fiber comprises a depressed core having at least 0.41 weight percent fluorine and an index difference (|Δn1|) with pure silica greater than 1.5×10−3, a depressed cladding having at least 1.2 weight percent fluorine and an index difference (|Δn2|) with pure silica greater than 4.5×10−3 and an index difference (|Δn2|−|Δn1|) with the depressed core greater than or equal to 3×10−3.

    Abstract translation: 单模光纤传输光纤包括具有至少0.41重量百分比的氟和与纯二氧化硅大于1.5×10-3的折射率差(| Deltan1 |)的凹陷芯,具有至少1.2重量%氟的折射率差和折射率差 (| Deltan2 |),纯硅石大于4.5×10-3,折射率差(| Deltan2 | - | Deltan1 |)与凹陷芯大于或等于3×10 -3。

    Transmission fibre with optical amplification and method for producing same
    37.
    发明授权
    Transmission fibre with optical amplification and method for producing same 有权
    具有光放大的传输光纤及其制造方法

    公开(公告)号:US07483611B2

    公开(公告)日:2009-01-27

    申请号:US11340722

    申请日:2006-01-27

    CPC classification number: G02B6/02

    Abstract: A transmission fibre with optical amplification, comprising a core and a cladding. The core material is doped with a first dopant of a material having a higher index of refraction than the material of the cladding and with a second dopant of a material that converts pump energy in the form of light having a first wavelength into light having a second wavelength. The concentration of the second dopant within the core increases in radial direction in proportion to the distance to the centre of the core. The core material is preferably doped with a third dopant for compensating the variation in the refractive index caused by the second dopant. The cladding may comprise a cladding layer surrounding the core provided with a fourth and a fifth dopant for signal amplification and refractive index compensation, respectively, in the cladding layer. The dopants have been selected to enable amplification, using the Raman effect or stimulated emission.

    Abstract translation: 具有光学放大的传输光纤,包括芯和包层。 芯材料掺杂有具有比包层材料更高的折射率的材料的第一掺杂剂,并且具有将具有第一波长的光形式的泵浦能量转换成具有第二波长的光的材料的第二掺杂剂 波长。 芯内的第二掺杂剂的浓度与芯的中心的距离成比例地径向增加。 芯材料优选掺杂有用于补偿由第二掺杂剂引起的折射率变化的第三掺杂剂。 包层可以包括围绕芯的包覆层,其设置有分别在包层中的信号放大和折射率补偿的第四和第五掺杂剂。 使用拉曼效应或受激发射,已经选择了掺杂剂以实现扩增。

    Optical fibre
    39.
    发明授权
    Optical fibre 有权
    光纤

    公开(公告)号:US07203408B2

    公开(公告)日:2007-04-10

    申请号:US11001319

    申请日:2004-12-02

    CPC classification number: G02B6/3855 G02B6/02395 G02B6/3833 G02B6/3839

    Abstract: An optical fibre having an NA-value of less than 0.34, which optical fibre is built up of a core and an enveloping protective coating, wherein the protective coating forms the outer layer of the optical fibre, which optical fibre has an NA-value ranging from 0.15 to 0.30, with the overall external diameter of the optical fibre corresponding to the internal diameter of an element into which the end of the optical fibre is inserted.

    Abstract translation: NA值小于0.34的光纤,该光纤由核心和包封保护涂层构成,其中保护涂层形成光纤的外层,该光纤具有NA值范围 从0.15到0.30,其中光纤的总外径对应于插入光纤端部的元件的内径。

    Transmission fibre with optical amplification and method for producing same

    公开(公告)号:US20060204191A1

    公开(公告)日:2006-09-14

    申请号:US11340722

    申请日:2006-01-27

    CPC classification number: G02B6/02

    Abstract: A transmission fibre with optical amplification, comprising a core and a cladding. The core material is doped with a first dopant of a material having a higher index of refraction than the material of the cladding and with a second dopant of a material that converts pump energy in the form of light having a first wavelength into light having a second wavelength. The concentration of the second dopant within the core increases in radial direction in proportion to the distance to the centre of the core. The core material is preferably doped with a third dopant for compensating the variation in the refractive index caused by the second dopant. The cladding may comprise a cladding layer surrounding the core provided with a fourth and a fifth dopant for signal amplification and refractive index compensation, respectively, in the cladding layer. The dopants have been selected to enable amplification, using the Raman effect or stimulated emission.

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