High sbs threshold optical fiber
    2.
    发明专利
    High sbs threshold optical fiber 有权
    高SBS阈值光纤

    公开(公告)号:JP2013138229A

    公开(公告)日:2013-07-11

    申请号:JP2013024355

    申请日:2013-02-12

    Abstract: PROBLEM TO BE SOLVED: To provide an optical waveguide fiber having a high threshold for stimulated Brillouin scattering.SOLUTION: The optical fiber comprises: (a) a rare earth doped core having a refractive index profile and a centerline, the core including at least two adjacent core regions including different amounts of updopants, such that the longitudinal acoustic velocities in the two core regions differ by at least 0.2%; and (b) a cladding layer surrounding and directly adjacent the core. The fiber has MFD greater than 12 μm and delta % difference between the peak core delta and the cladding less than 0.3%.

    Abstract translation: 要解决的问题:提供具有用于受激布里渊散射的高阈值的光波导光纤。解决方案:光纤包括:(a)具有折射率分布和中心线的稀土掺杂芯,所述芯包括至少两个 相邻的核心区域包括不同量的上升剂,使得两个核心区域中的纵向声速相差至少0.2%; 和(b)围绕并直接邻近芯的包覆层。 光纤的MFD大于12μm,峰值核心三角形和包层之间的Δ%差小于0.3%。

    拡大実効面積ファイバ
    4.
    发明专利
    拡大実効面積ファイバ 有权
    大型有效区域纤维

    公开(公告)号:JP2014222354A

    公开(公告)日:2014-11-27

    申请号:JP2014138568

    申请日:2014-07-04

    CPC classification number: G02B6/0365 G02B6/02019

    Abstract: 【課題】大きな実効面積と低曲げ損失を有する光ファイバを提供する。【解決手段】光ファイバは、ガラスコア20と、ガラスクラッド200を備え、クラッド200は、第1環状領域30と、第2環状領域50と、第3環状領域60とを備える。第3環状領域60に対して、コア20の最大相対屈折率は約0.1%より大きく、約0.3%より小さく、第1環状領域30の相対屈折率は、約0.025%より小く、第2環状領域50の相対屈折率は、負である。第2環状領域50は、その中に少なくとも10個の無秩序に分散した閉塞孔を有する石英系ガラスを含み、孔の間の平均距離が5000nmより小さく、少なくとも孔の80%が1000nmより小さい最大断面寸法を有する。【選択図】図1

    Abstract translation: 要解决的问题:提供具有大的有效面积和小的弯曲损耗的光纤。解决方案:光纤包括玻璃芯20和玻璃包层200,并且包层200包括第一环形区域30,第二环形区域 区域50和第三环形区域60.芯体20具有相对于第三环形区域60的最大相对折射率大于约0.1%且小于约0.3%。 第一环形区域30具有小于约0.025%的相对折射率。 第二环形区域50具有负的相对折射率。 第二环形区域50包括具有位于其中的至少10个闭合的随机分散的孔的二氧化硅基玻璃,并且孔之间的平均距离小于5000nm,并且至少80%的孔具有最小的横截面尺寸小于 1000 nm。

    SINGLE MODE WAVEGUIDE FOR LONG DISTANCE COMMUNICATIONS

    公开(公告)号:JP2000137130A

    公开(公告)日:2000-05-16

    申请号:JP21905999

    申请日:1999-08-02

    Applicant: CORNING INC

    Abstract: PROBLEM TO BE SOLVED: To obtain a single mode optical waveguide fiber for a long distance communication system having a long repeater interval and a high data signal speed by selecting a cut-off wavelength, etc., so that the cut-off wavelength, etc., in a specific range are given when a cable is formed. SOLUTION: The cores of the single mode optical waveguide fiber having at least the cores divided into two segments are enclosed by a clad glass layer. This waveguide fiber has an effective region larger than 60 μm2, more preferably an effective region larger than 65 μm, over a wavelength range from about 1,530 nm to 1,570 nm. In addition, the waveguide fiber has attenuation below 0.25 dB/Km at 1550 nm and zero dispersion wavelength in a range from about 1,564 nm to 1600 nm and has a dispersion inclination imparting dispersion more negative than about -0.5 ps/nm-Km at 1,560 nm. The cut-off frequency of the fiber in the state that the cable is formed is selected and maintained in a range from about 1,285 nm to 1,500 nm.

Patent Agency Ranking