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公开(公告)号:US07689084B2
公开(公告)日:2010-03-30
申请号:US12418766
申请日:2009-04-06
申请人: Xin Chen , Joohyun Koh , Ming-Jun Li , Anping Liu , Deborah Lynn Marlatt , Ji Wang
发明人: Xin Chen , Joohyun Koh , Ming-Jun Li , Anping Liu , Deborah Lynn Marlatt , Ji Wang
摘要: According to one example of the invention an optical fiber comprises: (i) a silica based core, said core having a core diameter greater than 80 μm and a numerical aperture NA≧0.24; and (ii) a silica based cladding in contact with and surrounding the core and having a second index of refraction n2, such that n1>n2; wherein the cladding includes B and F. Preferably the numerical aperture NA is at least 0.3.
摘要翻译: 根据本发明的一个示例,光纤包括:(i)二氧化硅基核,所述芯的芯直径大于80μm,数值孔径NA≥0.24; 和(ii)二氧化硅基包层,其与核心接触并包围并具有第二折射率n2,使得n1> n2; 其中所述包层包括B和F.优选地,所述数值孔径NA至少为0.3。
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公开(公告)号:US20090274428A1
公开(公告)日:2009-11-05
申请号:US12418766
申请日:2009-04-06
申请人: Xin Chen , Joohyun Koh , Ming-Jun Li , Anping Liu , Deborah Lynn Marlatt , Ji Wang
发明人: Xin Chen , Joohyun Koh , Ming-Jun Li , Anping Liu , Deborah Lynn Marlatt , Ji Wang
摘要: According to one example of the invention an optical fiber comprises: (i) a silica based core, said core having a core diameter greater than 80 μm and a numerical aperture NA≧0.24; and (ii) a silica based cladding in contact with and surrounding the core and having a second index of refraction n2, such that n1>n2; wherein the cladding includes B and F. Preferably the numerical aperture NA is at least 0.3.
摘要翻译: 根据本发明的一个示例,光纤包括:(i)二氧化硅基核,所述芯的芯直径大于80μm,数值孔径NA> = 0.24; 和(ii)二氧化硅基包层,其与核心接触并包围并具有第二折射率n2,使得n1> n2; 其中所述包层包括B和F.优选地,所述数值孔径NA至少为0.3。
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公开(公告)号:US20080279516A1
公开(公告)日:2008-11-13
申请号:US11801896
申请日:2007-05-11
申请人: Xin Chen , Joohyun Koh , Ming-Jun Li , Anping Liu , Jianguo Wang
发明人: Xin Chen , Joohyun Koh , Ming-Jun Li , Anping Liu , Jianguo Wang
IPC分类号: G02B6/02
CPC分类号: C03C25/106 , G02B6/02395 , G02B6/03683
摘要: An optical fiber includes a core and a cladding, said cladding having a refractive index nc a first coating directly contacting the cladding of said fiber, said coating having a thickness of less than 10 microns, said coating having a refractive index delta %=100×(ni2-nc2)/2ni2 less than −1 percent. In another aspect, an optical fiber includes a core and a cladding, said cladding having a refractive index nc, a first coating directly contacting the cladding of said fiber, said fiber comprising a glass diameter less than 100 microns, said coating having a thickness of at least 8 microns, said coating having a refractive index delta %=100×(ni2-nc2)/2ni2 less than −1 percent.
摘要翻译: 光纤包括芯和包层,所述包层具有直接接触所述纤维的包层的第一涂层的折射率n n,所述涂层具有小于10微米的厚度,所述涂层具有 折射率δ%= 100×(n×2)/ 2n(i) SUP> 2 SUP>小于-1%。 在另一方面,光纤包括芯和包层,所述包层具有折射率n C c,直接接触所述纤维的包层的第一涂层,所述纤维包含小于100的玻璃直径 所述涂层具有至少8微米的厚度,所述涂层具有折射率Δ%= 100×(n×2) 小于-1%的小于2%。
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公开(公告)号:US20100195194A1
公开(公告)日:2010-08-05
申请号:US12669664
申请日:2008-07-16
申请人: Xin Chen , Joohyun Koh , Ming-Jun Li , Anping Liu
发明人: Xin Chen , Joohyun Koh , Ming-Jun Li , Anping Liu
CPC分类号: G02B6/14 , G02B6/024 , G02B6/03644 , G02B6/03661 , G02B6/03688 , H01S3/06708 , H01S3/06712 , H01S3/06729 , H01S3/08045 , H01S3/094007
摘要: 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.
摘要翻译: 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。
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公开(公告)号:US08797642B2
公开(公告)日:2014-08-05
申请号:US12669664
申请日:2008-07-16
申请人: Xin Chen , Joohyun Koh , Ming-Jun Li , Anping Liu
发明人: Xin Chen , Joohyun Koh , Ming-Jun Li , Anping Liu
CPC分类号: G02B6/14 , G02B6/024 , G02B6/03644 , G02B6/03661 , G02B6/03688 , H01S3/06708 , H01S3/06712 , H01S3/06729 , H01S3/08045 , H01S3/094007
摘要: 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.
摘要翻译: 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。
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公开(公告)号:US07539381B2
公开(公告)日:2009-05-26
申请号:US11801896
申请日:2007-05-11
申请人: Xin Chen , Joohyun Koh , Ming-Jun Li , Anping Liu , Jianguo Wang
发明人: Xin Chen , Joohyun Koh , Ming-Jun Li , Anping Liu , Jianguo Wang
IPC分类号: G02B6/02
CPC分类号: C03C25/106 , G02B6/02395 , G02B6/03683
摘要: An optical fiber includes a core and a cladding, said cladding having a refractive index nc a first coating directly contacting the cladding of said fiber, said coating having a thickness of less than 10 microns, said coating having a refractive index delta %=100×(ni2−nc2)/2ni2 less than −1 percent. In another aspect, an optical fiber includes a core and a cladding, said cladding having a refractive index nc, a first coating directly contacting the cladding of said fiber, said fiber comprising a glass diameter less than 100 microns, said coating having a thickness of at least 8 microns, said coating having a refractive index delta %=100×(ni2−nc2)/2ni2 less than −1 percent.
摘要翻译: 光纤包括芯和包层,所述包层具有折射率nc,第一涂层直接接触所述纤维的包层,所述涂层的厚度小于10微米,所述涂层具有折射率δ%= 100×( ni2-nc2)/ 2ni2小于-1%。 在另一方面,光纤包括芯和包层,所述包层具有折射率nc,直接接触所述纤维包层的第一涂层,所述纤维包含小于100微米的玻璃直径,所述涂层的厚度为 至少8微米,所述涂层具有小于-1%的折射率Δ%= 100×(ni2-nc2)/ 2ni2。
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公开(公告)号:US20100142890A1
公开(公告)日:2010-06-10
申请号:US12498591
申请日:2009-07-07
申请人: Robert R. Alfano , Xin Chen , Joohyun Koh , Ming-Jun Li , Daniel Aloysius Nolan , Henry Sztul
发明人: Robert R. Alfano , Xin Chen , Joohyun Koh , Ming-Jun Li , Daniel Aloysius Nolan , Henry Sztul
IPC分类号: G02B6/26
CPC分类号: G02B6/024 , C03B2203/10 , C03B2203/19 , C03B2203/32 , C03B2205/06 , G02B6/14
摘要: Generation of a cylindrically polarized light beam, and in particular, a hybrid-azimuthal-radial polarization beams, called HARP modes, generated from an input linearly polarized Gaussian beam using a spun optical waveguide device is taught. The HARP modes are comprised of hybrid-azimuthal polarization (HAP) and hybrid-radial polarization (HRP) superposition modes. These beams possess a non-zero local angular momentum density that is spatially varying and a zero total angular momentum.
摘要翻译: 教导了使用旋转光波导装置从输入线性偏振高斯光束产生的圆柱形偏振光束,特别是称为HARP模式的混合方位角 - 径向偏振光束。 HARP模式由混合方位极化(HAP)和混合径向极化(HRP)叠加模式组成。 这些光束具有非零局部角动量密度,其空间变化和零总角动量。
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公开(公告)号:US07697809B2
公开(公告)日:2010-04-13
申请号:US12220268
申请日:2008-07-23
IPC分类号: G02B6/032
CPC分类号: G02B6/024
摘要: An optical fiber, comprising: (i) a core having a core center and a radius or a width a, (ii) a cladding surrounding the core, and (iii) at least one stress member situated proximate to the fiber core within the cladding, said stress member comprising silica co-doped with F and at least one dopant selected from the list consisting of: GeO2, P2O5, Y2O3, TiO2 and Al2O3, wherein distance b between the stress member and the core center satisfies the following equation: 1≦b/a
摘要翻译: 1.一种光纤,包括:(i)具有芯中心和半径或宽度a的芯,(ii)围绕所述芯的包层,以及(iii)至少一个应力构件,位于所述包层内的所述纤维芯附近 所述应力部件包括与F共掺杂的二氧化硅和选自GeO2,P2O5,Y2O3,TiO2和Al2O3中的至少一种掺杂剂,其中应力部件与芯心之间的距离b满足以下等式:1&nlE ; b / a <2。
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公开(公告)号:US20100085558A1
公开(公告)日:2010-04-08
申请号:US12365417
申请日:2009-02-04
申请人: Xin Chen , Joohyun Koh , Ming-Jun Li , Daniel Aloysius Nolan
发明人: Xin Chen , Joohyun Koh , Ming-Jun Li , Daniel Aloysius Nolan
IPC分类号: G01N21/47
CPC分类号: G01L1/242 , C03B2203/19 , C03B2203/30 , C03B2205/06 , G01M11/3181 , G02B6/02
摘要: A detection system comprising: (i) an optical fiber, the optical fiber having (a) a length L≧1 km; (b) beat length between 10 m and 100 m; and (c) beat length uniformity over any distance of at least 100 m within the length L is characterized by standard deviation σ, where |σ|≦10 m; (ii) an OTDR coupled to the fiber and including (a) a radiation source providing pulsed radiation to the fiber, (b) a detection system capable of detecting radiation that is backscattered back through the fiber; and (iii) at least one polarizer situated between the fiber and the detector, such that the backscattered radiation passes through the polarizer before reaching the detector.
摘要翻译: 一种检测系统,包括:(i)光纤,所述光纤具有(a)长度L≥1km; (b)拍摄距离在10米至100米之间; 和(c)在长度L内的至少100米的任何距离上的击穿长度均匀性的特征在于标准偏差&sgr,其中|&sgr | |&nlE; 10m; (ii)耦合到所述光纤的OTDR,并且包括(a)向所述光纤提供脉冲辐射的辐射源,(b)能够检测通过所述光纤反向散射的辐射的检测系统; 和(iii)位于光纤和检测器之间的至少一个偏振器,使得后向散射的辐射在到达检测器之前穿过偏振器。
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公开(公告)号:US20070269175A1
公开(公告)日:2007-11-22
申请号:US11437897
申请日:2006-05-19
申请人: Xin Chen , Joohyun Koh , Ming-Jun Li , Daniel Nolan
发明人: Xin Chen , Joohyun Koh , Ming-Jun Li , Daniel Nolan
CPC分类号: C03B37/014 , C03B37/01217 , C03B2201/10 , C03B2201/28 , C03B2201/31 , C03B2203/14 , C03B2203/302 , C03B2203/31 , G02B6/02333 , G02B6/02366 , G02B6/024
摘要: An optical fiber comprising: (i) a silica based passive core having a first index of refraction n1; (ii) a silica based cladding surrounding the core and having a second index of refraction n2, such that n1>n2, said cladding having at least one stress rod and at least one air hole extending longitudinally through the length of said optical fiber; and (iii) wherein said optical fiber supports a single polarization mode or poses polarization maintaining properties within the operating wavelength range.
摘要翻译: 一种光纤,包括:(i)具有第一折射率n 1的二氧化硅基无源芯; (ii)围绕所述芯并且具有第二折射率n 2 2的二氧化硅基包层,使得所述第二折射率n 2 2 < 包层具有至少一个应力杆和沿所述光纤的长度纵向延伸的至少一个气孔; 和(iii)其中所述光纤支持单一偏振模式或在工作波长范围内产生偏振维持特性。
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