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    • 5. 发明申请
    • LARGE EFFECTIVE AREA FIBER WITH GE-FREE CORE
    • 具有无缝芯的大型有效区域纤维
    • WO2011094256A8
    • 2012-10-18
    • PCT/US2011022503
    • 2011-01-26
    • CORNING INCBICKHAM SCOTT RBOOKBINDER DANA CLI MING-JUNMISHRA SNIGDHARAJ KNOLAN DANIEL ATANDON PUSHKAR
    • BICKHAM SCOTT RBOOKBINDER DANA CLI MING-JUNMISHRA SNIGDHARAJ KNOLAN DANIEL ATANDON PUSHKAR
    • G02B6/02G02B6/028G02B6/036
    • C03C13/046G02B6/02019G02B6/02395G02B6/0281G02B6/0283G02B6/03627G02B6/0365
    • An optical waveguide fiber comprises: (i) a Ge free core (12) having an effective area of 100 µm2 to 160 µm2, at a 1550 nm wavelength, and an a value 12= a=200, said core comprising: (a) a central core region (14) extending radially outwardly from a centerline to a radius r., and having a relative refractive index percent profile ?0(r) in % measured relative to pure silica, wherein -0.1 % =0. 1 %, wherein the central core region has a maximum relative refractive index percent, ?0MAX (b) a first annular core region (16) surrounding and directly adjacent to the central core region and extending to an outer radius r1 wherein 4.8 µm =r, =10 µm, and having a relative refractive index percent profile, ?1(r) in % measured relative to pure silica, and a minimum relative refractive index, and the relative refractive index measured at a radius r = 2.5 µm being: -0.15 ?,(r =2.5 µm), (c) a fluorine doped second annular region (18) surrounding and directly adjacent to the first annular core region and extending to a radius 13 µm
    • 一种光波导光纤包括:(i)在1550nm波长处具有100μm2至160μm2的有效面积的无锗芯(12),并且值12 = a = 200,所述芯包括:(a) 中心芯区域(14),其从中心线径向向外延伸到半径r,并且具有相对于纯二氧化硅测量的相对折射率百分比曲线?0(r),其中-0.1%= 0。 1%,其中中心芯区域具有最大相对折射率百分比,α0MAX(b)围绕并直接邻近中心芯区域并延伸到外半径r1的第一环形芯区域(16),其中4.8μm= r =10μm,相对折射率百分比曲线,相对于纯二氧化硅测得的Δ1(r)%,最小相对折射率,在半径r =2.5μm处测得的相对折射率为: 0.15 <α,(r =2.5μm)<0,θ0 >,(r =2.5μm),(c)氟掺杂的第二环形区域(18),其围绕并直接邻近第一环形芯区域延伸到半径13μm
    • 7. 发明申请
    • LARGE EFFECTIVE AREA FIBER
    • 大型有效区域纤维
    • WO2008136918A2
    • 2008-11-13
    • PCT/US2008005157
    • 2008-04-22
    • CORNING INCBICKHAM SCOTT RBOOKBINDER DANA CCHEN XINLI MING-JUNMISHRA SNIGDHARAJ KNOLAN DANIEL A
    • BICKHAM SCOTT RBOOKBINDER DANA CCHEN XINLI MING-JUNMISHRA SNIGDHARAJ KNOLAN DANIEL A
    • G02B6/036G02B6/032
    • G02B6/0365G02B6/02019
    • An optical fiber according to an embodiment of the present invention comprises: a glass core extending from a centerline to a radius R 1 wherein R 1 is greater than about 5 µm; a glass cladding surrounding and in contact with the core, the cladding comprising: (i) a first annular region extending from the radius R 1 to a radius R 2 the first annular region comprising a radial width, W 2 = R 2 - R 1 , (ii) a second annular region extending from the radius R 2 to a radius R 3 , and comprising a radial width, W 3 = R 3 - R 2 , and (iii) a third annular region surrounding the second annular region and extending from the radius R 3 to an outermost glass radius R 4 ; wherein the core comprises a maximum relative refractive index, ? 1max , relative to the third annular region, and wherein ? 1MAX is greater than about 0.1 % and less than about 0.3 %; the first annular region has a refractive index delta ? 2 (r) is less than about 0.025%; wherein the second annular region comprises a minimum relative refractive index, ? 3MIN , relative to the third annular region; wherein ? 1MAX > ? 2MAX > ? 3MIN , and ? 2MIN > ? 3MIN 2 and bend loss of ==0.5 dB/turn on a 20 mm diameter mandrel.
    • 根据本发明实施例的光纤包括:从中心线延伸到半径R 1 1的玻璃芯,其中R 1大于约5μm; 围绕并与芯接触的玻璃包层,所述包层包括:(i)从半径R 1> 1延伸到半径R 2的第一环形区域,所述第一环形 包括径向宽度的区域,(2)从半径R 2 到半径R 3 3,并且包括径向宽度,W 3 3 = R 3→R 2 和(iii)围绕第二环形区域并从半径R 3 3延伸到最外玻璃半径R 4的第三环形区域; 其中所述芯包括相对于所述第三环形区域的最大相对折射率α1 max,并且其中Δ1MAX1大于约0.1%且小于约0.3% ; 第一环形区域的折射率Δθ2(r)小于约0.025%; 其中所述第二环形区域相对于所述第三环形区域包括最小相对折射率β3ININ; 其中α1 M 1 M 2 M 2 M 3 M 3 M 1 M 2 N M N N N > <0; 并且其中所述芯和所述包层提供具有小于1500nm的电缆截止的光纤,并且在1550nm处的有效面积大于95μm2,并且对于20°的弯曲损耗为0.5dB / mm直径心轴。