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    • 41. 发明申请
    • MULTIMODE FIBER WITH AT LEAST DUAL CLADDING
    • 具有最低双层的多模光纤
    • WO2010019222A1
    • 2010-02-18
    • PCT/US2009/004598
    • 2009-08-12
    • CORNING INCORPORATEDCHEN, XinLI, Ming-junNOLAN, Daniel, A.
    • CHEN, XinLI, Ming-junNOLAN, Daniel, A.
    • G02B6/02G02B6/028G02B6/036
    • G02B6/03627G02B6/02214G02B6/0281G02B6/0288G02B6/03644G02B6/03666G02B6/03688
    • One aspect of the invention is a graded index multimode optical fiber. The optical fiber includes a core region extending radially outwardly from a centerline to a radius R| and having a positive relative refractive index percent profile Δi(r). The core region has a maximum relative refractive index percent, Δ MAX . The optical fiber also includes a first annular cladding region surrounding and directly adjacent to the core region and extending to a radius R 2 , having a width W 2 of R 2 -R 1 . The first annular cladding region has a relative refractive index percent profile Δ3(r), with a minimum relative refractive index percent, Δ 2MIN .In addition, the optical fiber includes a second annular cladding region surrounding the first annular cladding region and having a relative refractive index percent profile, Δ 3(r) , with a maximum relative refractive index percent, Δ 3MAX , wherein Δ 3MAX is ≥ 0.05%.
    • 本发明的一个方面是渐变折射率多模光纤。 光纤包括从中心线径向向外延伸到半径R 1的芯区域 并且具有正的相对折射率百分比分布Δi(r)。 芯区域具有最大相对折射率百分比ΔMAX。光纤还包括围绕并直接邻近芯区域并延伸到具有R2-R1的宽度W2的半径R2的第一环形包层区域。 第一环形包层区域具有相对折射率百分比分布Δ3(r),具有最小相对折射率百分比ΔM2IN。另外,光纤包括围绕第一环形包层区域的第二环形包层区域,并且具有 相对折射率百分比曲线,Δ3(r),最大相对折射率百分比,Δ3MAX,其中Δ3MAX= 0.05%。
    • 42. 发明申请
    • DOUBLE-CLAD OPTICAL FIBERS AND DEVICES WITH DOUBLE-CLAD OPTICAL FIBERS
    • 双层光纤光纤和双光纤光纤设备
    • WO2010011265A2
    • 2010-01-28
    • PCT/US2009/004105
    • 2009-07-16
    • CORNING INCORPORATEDCHEN, XinKOH, JoohyunLI, Ming-Jun
    • CHEN, XinKOH, JoohyunLI, Ming-Jun
    • G02B6/036G02B6/028
    • G02B6/02261G02B6/02342G02B6/02357G02B6/03633
    • A double-clad optical fiber includes a core, an inner cladding and an outer cladding of silica-based glass. The core may have a radius of less than about 5μmn, a first index of refraction n1 and does not contain any active rare-earth dopants. The inner cladding may surround the core and includes a radial thickness of at least about 25 μm, a numerical aperture of at least about 0.25, and a second index of refraction n 2 such that n 2 1 . The relative refractive index percent (Δ%) of the core relative to the inner cladding may be greater than about 0.1%. The outer cladding may surround the inner cladding and include a radial thickness from about 10 μm to about 50 μm and a third index of refraction n 3 such that n 3 2 . The relative refractive index percent (%) of the inner cladding relative to the outer cladding may be greater than about 1.5%.
    • 双包层光纤包括芯,内包层和二氧化硅基玻璃的外包层。 芯可以具有小于约5μmn的半径,第一折射率n1并且不包含任何活性稀土掺杂剂。 内包层可以围绕芯部并且包括至少约25μm的径向厚度,至少约0.25的数值孔径和第二折射率n2,使得n21。 芯相对于内包层的相对折射率百分比(η%)可以大于约0.1%。 外包层可以包围内包层,并且包括约10μm至约50μm的径向厚度和第三折射率n3使得n32。 内包层相对于外包层的相对折射率百分比(%)可以大于约1.5%。