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    • 3. 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