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    • 4. 发明申请
    • LARGE EFFECTIVE AREA FIBER
    • 大型有效区域纤维
    • WO2008137150A1
    • 2008-11-13
    • PCT/US2008/005795
    • 2008-05-06
    • CORNING INCORPORATEDBICKHAM, Scott, R.BOOKBINDER, Dana, C.CHEN, XinLI, Ming-junMISHRA, Snigdharaj, K.NOLAN, Daniel, A.
    • BICKHAM, Scott, R.BOOKBINDER, Dana, C.CHEN, XinLI, Ming-junMISHRA, Snigdharaj, K.NOLAN, Daniel, A.
    • G02B6/036
    • 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, Δ 1MAX , relative to the third annular region, and wherein Δ 1MAX is greater than about 0.1 % and less than about 0.3 %; the first annular region has a refractive index delta Δ 2 (r) is less than about 0.025%; wherein the second annular region comprises a minimum relative refractive index, Δ 3MIN , relative to the third annular region; wherein Δ 1MAX > Δ 2MAX > Δ 3MIN , and Δ 2MIN >Δ 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半径R 2> 2延伸的第一环形区域,第一 包括径向宽度的第二环形区域,(ii)从半径R 1延伸的第二环形区域, SUB> 2 到半径R 3 3,并且包括径向宽度,W 3 3 = R 3 - 2)和(iii)围绕第二环形区域并从半径R 3 3延伸到最外侧玻璃半径R 4的第三环形区域; 其中所述芯包含相对于所述第三环形区域的最大相对折射率α1MAX1,并且其中α1MAX1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; 并且其中芯和包层提供具有断线小于1500nm的电缆的光纤,并且在1550nm处的有效面积大于95μm2,并且在20mm处具有= 0.5dB /匝的弯曲损耗 直径心轴。
    • 8. 发明申请
    • LOW NONLINEARITY LONG HAUL OPTICAL TRANSMISSION SYSTEM
    • 低非线性长波光传输系统
    • WO2011119310A1
    • 2011-09-29
    • PCT/US2011/026995
    • 2011-03-03
    • CORNING INCORPORATEDBICKHAM, Scott, R.RUKOSUEVA, Margarita
    • BICKHAM, Scott, R.RUKOSUEVA, Margarita
    • H04B10/18G02B6/02G02B6/293
    • H04B10/25253
    • A long haul optical fiber transmission system includes a transmitter, a receiver optically coupled to the transmitter with at least two composite optical fiber spans, at least one amplifier between each composite optical fiber span, each composite optical fiber span having a length of at least 50 km. Each composite optical fiber span also includes a first optical fiber and a second optical fiber. When the second optical fiber has positive dispersion at a wavelength of 1550 nm, the composite optical fiber span has, at a wavelength of 1550 nm, an average attenuation of less than 0.180 dB/km. When the second optical fiber has negative dispersion at a wavelength of 1550 nm, the composite optical fiber span has, at a wavelength of 1550 nm, an average dispersion with a magnitude from about 2 to about 5 ps/nm/km, an average attenuation of less than 0.205 dB/km, and each composite optical fiber span has an average dispersion slope with a magnitude less than about 0.02 ps/nm 2 /km.
    • 长距离光纤传输系统包括发射机,具有至少两个复合光纤跨距的光耦合到发射机的接收机,每个复合光纤跨度之间的至少一个放大器,每个复合光纤跨距的长度至少为50 公里。 每个复合光纤跨度还包括第一光纤和第二光纤。 当第二光纤在1550nm的波长处具有正色散时,复合光纤跨度在1550nm的波长处具有小于0.180dB / km的平均衰减。 当第二光纤在1550nm的波长处具有负色散时,复合光纤跨度在1550nm的波长处具有大约2至大约5ps / nm / km的平均色散,平均衰减 小于0.205dB / km,并且每个复合光纤跨度具有幅度小于约0.02ps / nm 2 / km的平均色散斜率。