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    • 21. 发明申请
    • Large effective area fiber
    • 大面积纤维有效面积
    • US20080279517A1
    • 2008-11-13
    • US12151171
    • 2008-05-05
    • Scott Robertson BickhamDana Craig BookbinderXin ChenMing-Jun LiSnigdharaj Kumar MishraDaniel Aloysius Nolan
    • Scott Robertson BickhamDana Craig BookbinderXin ChenMing-Jun LiSnigdharaj Kumar MishraDaniel Aloysius Nolan
    • G02B6/028
    • 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 R1 wherein R1 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 R1 to a radius R2, the first annular region comprising a radial width, W2=R2−R1, (ii) a second annular region extending from the radius R2 to a radius R3, and comprising a radial width, W3=R3−R2, and (iii) a third annular region surrounding the second annular region and extending from the radius R3 to an outermost glass radius R4; wherein the core comprises a maximum relative refractive index, Δ1MAX, relative to the third annular region, and wherein Δ1MAX is greater than about 0.1% and less than about 0.3%; the first annular region has a refractive index delta Δ2(r) is less than about 0.025%; wherein the second annular region comprises a minimum relative refractive index, Δ3MIN, relative to the third annular region;wherein Δ1MAX>Δ2MAX>Δ3MIN, and Δ2MIN>Δ3MIN
    • 根据本发明实施例的光纤包括:从中心线延伸到半径R 1的玻璃芯,其中R 1>大于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 < SUB> 2 到半径R 3 3,并且包括径向宽度,W 3 3 = R 3→N < 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; 其中所述芯包括相对于所述第三环形区域的最大相对折射率,Δ1MAX1,并且其中Δ1MAX1大于约0.1%且小于约0.3% ; 第一环形区域具有小于约0.025%的折射率差ΔΔ2(r); 其中所述第二环形区域包括相对于所述第三环形区域的最小相对折射率,Δ3 NIN; 其中Delta 1MAX 增量2MAX 三角洲3MIN和三角洲2MIN 三角洲3IN > <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,并且在20℃下的弯曲损耗为<= 0.5dB / mm直径心轴。
    • 24. 发明授权
    • Large effective area fiber
    • 大面积纤维有效面积
    • US07555187B2
    • 2009-06-30
    • US12151171
    • 2008-05-05
    • Scott Robertson BickhamDana Craig BookbinderXin ChenMing-Jun LiSnigdharaj Kumar MishraDaniel Aloysius Nolan
    • Scott Robertson BickhamDana Craig BookbinderXin ChenMing-Jun LiSnigdharaj Kumar MishraDaniel Aloysius Nolan
    • 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 R1 wherein R1 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 R1 to a radius R2, the first annular region comprising a radial width, W2=R2−R1, (ii) a second annular region extending from the radius R2 to a radius R3, and comprising a radial width, W3=R3−R2, and (iii) a third annular region surrounding the second annular region and extending from the radius R3 to an outermost glass radius R4; wherein the core comprises a maximum relative refractive index, Δ1MAX, relative to the third annular region, and wherein Δ1MAX is greater than about 0.1% and less than about 0.3%; the first annular region has a refractive index delta Δ2(r) is less than about 0.025%; wherein the second annular region comprises a minimum relative refractive index, Δ3MIN, relative to the third annular region;wherein Δ1MAX>Δ2MAX>Δ3MIN, and Δ2MIN>Δ3MIN
    • 根据本发明实施例的光纤包括:从中心线延伸到半径R1的玻璃芯,其中R1大于约5μm; 所述包层包括:(i)从所述半径R1延伸到半径R2的第一环形区域,所述第一环形区域包括径向宽度,W2 = R2-R1,(ii) 从半径R2延伸到半径R3并且包括径向宽度W3 = R3-R2的第二环形区域,以及(iii)围绕第二环形区域并且从半径R3延伸到最外侧玻璃半径的第三环形区域 R4; 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Delta1MAX,并且其中Δ1MAX大于约0.1%且小于约0.3%; 第一环形区域的折射率差Δ2(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Delta3MIN; 其中Delta1MAX> Delta2MAX> Delta3MIN和Delta2MIN> Delta3MIN <0; 并且其中芯和包层提供具有小于1500nm的电缆截止的光纤,并且在1550nm处的有效面积大于95mum2,并且在20mm直径的心轴上的弯曲损耗为<= 0.5dB /匝。
    • 25. 发明授权
    • Optical fiber with large effective area
    • 光纤有效面积大
    • US07603015B2
    • 2009-10-13
    • US12070845
    • 2008-02-21
    • Scott Robertson BickhamDana Craig BookbinderXin ChenMing-Jun LiSnigdharaj Kumar MishraDaniel Aloysius NolanPushkar Tandon
    • Scott Robertson BickhamDana Craig BookbinderXin ChenMing-Jun LiSnigdharaj Kumar MishraDaniel Aloysius NolanPushkar Tandon
    • G02B6/02G02B6/36
    • G02B6/02014G02B6/02019G02B6/02357G02B6/02366G02B6/0365G02B6/03661G02B6/03688
    • An optical fiber comprising: a glass core extending from a centerline to a radius R1; a glass cladding surrounding and in contact with the core, the cladding comprising: a first annular region extending from R1 to a radius R2, the first annular region comprising a radial width, W2=R2−R1, a second annular region extending from R2 to a radius R3, the second annular region comprising a radial width, W3=R3−R2, and a third annular region extending from R3 to an outermost glass radius R4; wherein (i) the core comprises a maximum relative refractive index, Δ1MAX, relative to the third annular region; (ii) wherein the first annular region comprises a radial width W2; and (iii) the second annular region comprises a minimum relative refractive index, Δ3MIN, relative to the third annular region wherein Δ1MAX>Δ2MAX>Δ3MIN, and Δ2MIN>Δ3MIN; and the core and the cladding provide a fiber with cable cutoff less than 1500 nm, dispersion at 1550 nm less than 12 ps/nm/km, effective area at 1550 nm greater than 60 μm2, and preferably greater than 70 μm2. The second annular cladding region may contain a plurality of randomly dispersed holes.
    • 一种光纤,包括:从中心线延伸到半径R1的玻璃芯; 围绕并与芯接触的玻璃包层,所述包层包括:从R1延伸到半径R2的第一环形区域,所述第一环形区域包括径向宽度W2 = R2-R1,从R2延伸到第二环形区域 半径R3,第二环形区域包括径向宽度,W3 = R3-R2,以及从R3延伸到最外侧玻璃半径R4的第三环状区域; 其中(i)所述芯包括相对于所述第三环形区域的最大相对折射率Delta1MAX; (ii)其中所述第一环形区域包括径向宽度W2; 和(iii)第二环形区域包括相对于第三环形区域的最小相对折射率Delta3MIN,其中Delta1MAX> Delta2MAX> Delta3MIN和Delta2MIN> Delta3MIN; 并且芯和包层提供具有小于1500nm的电缆截止的光纤,在1550nm处的色散小于12ps / nm / km,在1550nm处的有效面积大于60mum2,优选大于70mum2。 第二环形包层区域可以包含多个随机分布的孔。
    • 27. 发明申请
    • Large Mode Area Optical Fiber
    • 大模光区域光纤
    • US20100195194A1
    • 2010-08-05
    • US12669664
    • 2008-07-16
    • Xin ChenJoohyun KohMing-Jun LiAnping Liu
    • Xin ChenJoohyun KohMing-Jun LiAnping Liu
    • H01S3/09G02B6/14G02B6/036H01S3/067B05D5/06
    • G02B6/14G02B6/024G02B6/03644G02B6/03661G02B6/03688H01S3/06708H01S3/06712H01S3/06729H01S3/08045H01S3/094007
    • A large-mode-area (LMA) optical fiber (10) that operates as a single-mode optical fiber. The optical fiber includes a core region (20) surrounded by an inner cladding (32), which in turn is surrounded by an outer cladding (40). The inner cladding includes at least one up-doped ring region (32R1). The ring region is configured to form a large attenuation differential between the higher-order modes and the fundamental mode so only that the fundamental mode remains traveling in the optical fiber. If necessary, the optical fiber can include a bend (10B) having a select “resonant” bend diameter (DB) that increases the relative attenuation of the fundamental and higher-order modes. The optical fiber supports an effective mode field diameter (MFD) of up to 40 μm to 50 μm. As a result, detrimental non-linear effects are suppressed, which allows the optical fiber to carry substantially more optical power than conventional LMA optical fibers. The LMA optical fiber is thus eminently suited for a number of optical-fiber-based applications calling for high optical power, such as fiber lasers and pump sources for wavelength conversion.
    • 作为单模光纤工作的大模(LMA)光纤(10)。 光纤包括由内包层(32)包围的芯区域(20),该内部区域又由外包层(40)围绕。 内包层包括至少一个上掺杂环区(32R1)。 环形区域被配置为在高阶模式和基模之间形成大的衰减差分,从而仅使基本模式保持在光纤中行进。 如果需要,光纤可以包括具有选择的“共振”弯曲直径(DB)的弯曲(10B),该弯曲直径(DB)增加了基极和高阶模的相对衰减。 光纤支持高达40μm至50μm的有效模场直径(MFD)。 结果,抑制了有害的非线性效应,这使得光纤比传统的LMA光纤承载更多的光功率。 因此,LMA光纤非常适合于需要高光功率的多个基于光纤的应用,例如用于波长转换的光纤激光器和泵浦光源。