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    • 3. 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。
    • 4. 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%。
    • 7. 发明申请
    • OPTICAL FIBER LIGHT SOURCE BASED ON THIRD-HARMONIC GENERATION
    • 基于三次谐波生成的光纤光源
    • WO2008106113A1
    • 2008-09-04
    • PCT/US2008/002495
    • 2008-02-26
    • CORNING INCORPORATEDBERKEY, George, E.LI, Ming-junLI, ShenpingNOLAN, Daniel, A.
    • BERKEY, George, E.LI, Ming-junLI, ShenpingNOLAN, Daniel, A.
    • G02F1/35
    • G02F1/3536G02B6/03605G02B6/03644G02F1/365G02F2001/354
    • An optical-fiber-based light source that generates light via third-harmonic (TH) generation is disclosed. The light source includes a pump light source that provides pump light having a fundamental mode of wavelength λp. The light source also includes an optical fiber optically coupled to the pump light source. The optical fiber's core refractive index profile has (i) a central region with a refractive index value Δ 1 , (ii) a first annular region immediately surrounding the central region and having a refractive index value Δ 2 , and (iii) a second annular region immediately surrounding the first annular region and having a refractive index value Δ 3 . The optical fiber satisfies the conditions Δ 2 1 and Δ 2 3 , and max{Δ 1 , Δ 3 } - Δ 2 > 1.2%. The pump light produces TH-generated light having a higher-order mode of wavelength λ TH = (1/3) λ ρ and that is outputted at the optical fiber output end. The pump light fundamental mode overlaps the TH-generated-light higher order mode over the length of the optical fiber to provide a conversion efficiency of 1% or greater.
    • 公开了一种通过三次谐波(TH)产生光产生光的基于光纤的光源。 光源包括提供具有基本波长λp的泵浦光的泵浦光源。 光源还包括光学耦合到泵浦光源的光纤。 光纤的纤芯折射率分布具有(i)具有折射率值α1的中心区域,(ii)直接围绕中心区域并具有折射率值α 2 ,和(iii)紧邻第一环形区域并具有折射率值β3的第二环形区域。 光纤满足条件α2α2α3和α2 2 3α3和最大{β2 2%,1%,3%〜3%。 泵浦光产生具有较高阶波长模式的TH产生的光,其在光纤输出端输出(1/3)→ 。 泵浦光基本模式在光纤长度上与TH生成光高阶模式重叠,以提供1%或更大的转换效率。