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公开(公告)号：US09411109B2
公开(公告)日：2016-08-09
申请号：US14488063
申请日：2014-09-16
申请人： Nufern
发明人： David Machewirth , David Björk , David Hosmer , Joshua Galipeau
CPC分类号： G02B6/3616
摘要： The present invention relates generally to a mount for securely holding an optical fiber in place, for example, on an optical bench or a translation stage. In one embodiment, the mount includes a lower block having a first portion, which has an upward-facing channel formed in the top surface thereof and extending from the front surface to the rear region. The channel forms a groove at its bottom. The mount further includes an upper block disposed over the first portion of the lower block. The upper block has a downward-facing ridge that includes one or more holding surfaces disposed adjacent the groove and extending along the downward-facing ridge. The upper block is held against the first portion of the lower block, such that the one or more holding surfaces are positioned to hold the optical fiber in the groove.
摘要翻译： 本发明一般涉及用于将光纤固定地保持在适当位置的安装座，例如在光学平台或平台上。 在一个实施例中，安装座包括具有第一部分的下部块，该第一部分具有形成在其顶部表面中并且从前表面延伸到后部区域的向上通道。 通道在其底部形成凹槽。 安装件还包括设置在下部块的第一部分上的上部块。 上部块具有向下的脊，其包括一个或多个保持表面，该保持表面邻近凹槽设置并且沿向下的脊部延伸。 上块被保持抵靠下块的第一部分，使得一个或多个保持表面被定位成将光纤保持在槽中。
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公开(公告)号：US09014522B2
公开(公告)日：2015-04-21
申请号：US13996916
申请日：2011-12-21
申请人： Imtiaz Majid , Chih-Hao Wang , Kanishka Tankala
发明人： Imtiaz Majid , Chih-Hao Wang , Kanishka Tankala
CPC分类号： G02B6/274 , B29D11/00711 , G02B6/02109 , G02B6/2843 , H01S3/06712 , H01S3/0675 , H01S3/07 , H01S3/094011 , H01S3/094019 , H01S3/09408
摘要： The present invention relates generally to optical waveguides for the transmission of electromagnetic energy. The present invention relates more particularly to optical couplers for coupling optical fibers, and methods for making them. One aspect of the present invention is an optical coupler for use with a polarization-maintaining input optical fiber and a polarization-maintaining output optical fiber. The coupler includes: a tube having a wide end, a narrow end having an end face, and a taper therebetween; a polarization-maintaining feed-through optical fiber having a first end having an end face and a second end, the polarization-maintaining feed-through optical fiber being disposed within the tube from the wide end to the narrow end, at least the narrow end of the tube being fused around a first length of the polarization-maintaining feed-through optical fiber including the first end of the polarization-maintaining feed-through optical fiber to form a coupler end face comprising the end face of the tube and the end face of the first end of the polarization-maintaining feed-through optical fiber. In one aspect of the invention, the polarization-maintaining feed-through optical fiber has an outer diameter no greater than about 200 μm in the region in which the tube is fused around it. In another aspect of the invention, the polarization-maintaining feed-through optical fiber has an outer diameter at the coupler end face no greater than about 75% of the diameter of the polarization-maintaining input optical fiber.
摘要翻译： 本发明一般涉及用于传输电磁能的光波导。 本发明更具体地涉及用于耦合光纤的光耦合器及其制造方法。 本发明的一个方面是一种用于偏振保持输入光纤和偏振保持输出光纤的光耦合器。 联接器包括：具有宽端的管，具有端面的窄端和其间的锥形; 一种偏振保持馈通光纤，其具有端面和第二端的第一端，所述偏振保持馈通光纤从宽端至窄端设置在管内，至少窄端 所述管被围绕包括所述偏振保持馈通光纤的所述第一端的所述偏振保持馈通光纤的第一长度熔合以形成包括所述管的端面和所述端面的耦合器端面 的偏振保持馈通光纤的第一端。 在本发明的一个方面，偏振保持馈通光纤在其周围熔合的区域中具有不大于约200μm的外径。 在本发明的另一方面，偏振保持馈通光纤在耦合器端面处的外径不大于偏振波保持输入光纤的直径的大约75％。
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3.发明授权Pulsed linearly polarized optical fiber laser using unpolarized Q-switched seed laser and having good output power stability 有权脉冲线性偏振光纤激光器采用非偏振Q开关种子激光器，具有良好的输出功率稳定性公开(公告)号：US07817683B2
公开(公告)日：2010-10-19
申请号：US12358012
申请日：2009-01-22
申请人： Victor Khitrov
发明人： Victor Khitrov
IPC分类号： H01S3/30
CPC分类号： H01S3/06754 , H01S3/06712 , H01S3/08045 , H01S3/09415 , H01S3/1618
摘要： Optical fiber source for providing polarized optical pulses, comprising a Q-switched fiber laser for providing substantially unpolarized seed pulses of optical energy, where the Q-switched fiber laser can comprise a laser cavity having a Q-switch and an optical fiber comprising a gain medium, where the optical fiber need not be a polarizing or polarization maintaining optical fiber; a passive polarizing element arranged to receive and substantially polarize the substantially unpolarized seed pulses; and a polarization maintaining fiber amplifier arranged for receiving the polarized seed pulses. The polarization maintaining fiber amplifier can comprise a selected polarizing or polarization maintaining fiber having a core comprising a gain medium for amplifying the substantially polarized seed pulses, where the core can be normally multimode at a an operating wavelength of the optical fiber source. The fiber amplifier can provide substantially polarized output pulses. In one practice of the invention, the pulse power instability, over at least 100 consecutive pulses, is no greater than 10%.
摘要翻译： 用于提供偏振光脉冲的光纤源，包括用于提供基本上非偏振的光能种子脉冲的Q开关光纤激光器，其中Q开关光纤激光器可以包括具有Q开关的激光腔和包括增益的光纤 介质，其中光纤不需要是偏振或偏振保持光纤; 无源偏振元件，被布置成接收和基本上极化基本上非偏振的种子脉冲; 以及设置用于接收极化种子脉冲的偏振保持光纤放大器。 偏振维持光纤放大器可以包括所选择的偏振或偏振保持光纤，其具有包括用于放大基本偏振的种子脉冲的增益介质的核，其中核可以在光纤源的工作波长处正常多模。 光纤放大器可以提供基本偏振的输出脉冲。 在本发明的一个实践中，在至少100个连续脉冲中的脉冲功率不稳定性不大于10％。
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公开(公告)号：US07371019B2
公开(公告)日：2008-05-13
申请号：US11300572
申请日：2005-12-13
申请人： Martin Seifert
发明人： Martin Seifert
IPC分类号： G02B6/255
CPC分类号： H01S3/0675 , G01M11/37 , G02B6/02085 , G02B6/2551 , G02B6/2804 , H01S3/06704 , H01S3/09415 , H01S3/1312
摘要： Disclosed is an optical apparatus including an optical fiber having a wavelength of operation, the optical fiber comprising a first length of the optical fiber joined to a second length of the optical fiber with a splice such that the first and second lengths are in optical communication; a photodetector for sensing light leaking from the splice; and wherein the splice has a splice loss of not greater than 0.5 dB at the wavelength of operation. Methods of sensing light are also disclosed.
摘要翻译： 公开了一种包括具有波长工作的光纤的光学装置，所述光纤包括以第一和第二长度光学通信的方式接合到所述光纤的第二长度的第二长度的所述光纤的第一长度; 用于感测从接头泄漏的光的光电检测器; 并且其中所述接头在操作波长处具有不大于0.5dB的接头损耗。 还公开了感测光的方法。
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公开(公告)号：US07116887B2
公开(公告)日：2006-10-03
申请号：US10619376
申请日：2003-07-11
IPC分类号： G02B6/17
CPC分类号： G02B6/02114 , C03B37/01217 , C03B37/01231 , C03B2201/10 , C03B2201/12 , C03B2201/28 , C03B2201/31 , C03B2201/34 , C03B2201/42 , C03B2203/23 , C03B2203/31 , G02B6/024
摘要： An optical fiber comprises a photosensitive core that includes a concentration of a first material that increases the refractive index of the core and a concentration of a second material that is other than boron and that reduces the refractive index of the core. A cladding is disposed about the core for tending to confine light to the core. The fiber also includes at least one longitudinally extending region having a thermal coefficient of expansion that is different from the thermal coefficient of expansion of the cladding. In another embodiment, the core includes a concentration of germanium and a concentration of boron. Also disclosed is a polarization-maintaining double-clad (PM DC) fiber comprising one or both of at least one circular axially extending stress inducing region(s) and an inner cladding comprising a circular outer perimeter. Fibers according to the invention can include a rare earth dopant for emitting light of a selected wavelength responsive to being pumped by pump light of a pump wavelength that is different than the selected wavelength.
摘要翻译： 光纤包括感光芯，其包括提高芯的折射率的第一材料的浓度和不同于硼的第二材料的浓度，并降低芯的折射率。 围绕芯部布置包层以倾向于将光限制在芯部上。 纤维还包括具有不同于包层的热膨胀系数的热膨胀系数的至少一个纵向延伸区域。 在另一个实施方案中，芯包括锗的浓度和硼的浓度。 还公开了一种包括至少一个圆形轴向延伸的应力诱导区域和包含圆形外周边的内包层中的一个或两个的偏振保持双包层（PMDC）光纤。 根据本发明的纤维可以包括用于发射选定波长的光的稀土掺杂剂，其响应于通过不同于所选波长的泵浦波长的泵浦光泵浦。
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公开(公告)号：US07050686B2
公开(公告)日：2006-05-23
申请号：US10911812
申请日：2004-08-05
CPC分类号： G02B6/024
摘要： A fiber optic article can comprise a core, an inner region disposed about the core and a cladding disposed about the inner region. The index of refraction of the cladding can be less than that of the inner region, and the index of refraction of the inner region can be less than that of the core. The fiber can include a second cladding disposed about the cladding, where the second cladding has an index of refraction that is less than the index of refraction of the cladding. The inner region can have a non circular outer perimeter that includes at least one inwardly oriented section. The article can be elongate along a longitudinal axis and can include at least one longitudinally extending region, such as a stress inducing region, for providing birefringence and the inwardly oriented region can face the longitudinally extending region. The fiber optic article can include active material for providing light responsive to the article receiving pump light, such as, for example, one or more rare earths. The rare earths can include erbium and ytterbium.
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公开(公告)号：US11287572B2
公开(公告)日：2022-03-29
申请号：US17007669
申请日：2020-08-31
申请人： Nufern
摘要： The present disclosure relates more to mode mixing optical fibers useful, for example in providing optical fiber laser outputs having a desired beam product parameter and beam profile. In one aspect, the disclosure provides a mode mixing optical fiber for delivering optical radiation having a wavelength, the mode mixing optical fiber having an input end, an output end, a centerline and a refractive index profile, the mode mixing optical fiber comprising: an innermost core, the innermost core having a refractive index profile; and a cladding disposed about the innermost core, wherein the mode mixing optical fiber has at least five modes at the wavelength, and wherein the mode mixing optical fiber is configured to distribute a fraction of the light input at its input end from its lower-order modes to its higher-order modes.
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公开(公告)号：US20210075181A1
公开(公告)日：2021-03-11
申请号：US16562365
申请日：2019-09-05
申请人： Nufern
摘要： A high-power fiber laser produces a compound output beam having a center beam and an annular beam. The center beam and the annular beam are independently adjustable in power and wavelength. The output beam is delivered from an output optical fiber having a center core and a concentric annular core. A fundamental beam generated by a seed laser is amplified by a fiber amplifier and partially converted to a second-harmonic beam by a second-harmonic generator. The residual fundamental beam and second-harmonic beam are separated, attenuated, and selectively coupled into the cores of the output optical fiber.
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公开(公告)号：US20110280584A1
公开(公告)日：2011-11-17
申请号：US13145653
申请日：2010-01-22
申请人： Kanishka Tankala , Kevin Farley
发明人： Kanishka Tankala , Kevin Farley
IPC分类号： H04B10/12
CPC分类号： G02B6/03694 , C03C13/045 , G02B6/03633 , G02B6/03638 , G02B6/03661
摘要： The present invention relates to optical fibers useful for the transmission of electromagnetic energy at such high levels of power that stimulated Brillouin scattering (SBS) may be of importance. One aspect of the present invention is an optical fiber for the propagation of optical radiation having an optical wavelength, the optical fiber and optical wavelength having an SBS acoustic wavelength associated therewith, the optical fiber comprising a core having a geometrical center and an outer perimeter; and a cladding surrounding the core; wherein the core is rare earth doped and substantially free of germanium, the optical fiber has a refractive index profile such that the core is guiding for optical radiation having the optical wavelength, and the optical fiber has an acoustic index profile such that the core is antiguiding for an acoustic wave having the SBS acoustic wavelength.
摘要翻译： 本发明涉及用于在受激布里渊散射（SBS）可能是重要的如此高的功率级传输电磁能量的光纤。 本发明的一个方面是用于传播具有光波长的光辐射的光纤，所述光纤和光波长具有与之相关联的SBS声波长，所述光纤包括具有几何中心和外周的芯; 和围绕芯的包层; 其中所述芯是稀土掺杂并且基本上不含锗，所述光纤具有折射率分布，使得所述芯被引导用于具有所述光学波长的光辐射，并且所述光纤具有声学指数分布，使得所述芯是抗磁化的 对于具有SBS声波长的声波。
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10.发明申请公开(公告)号：US20110075252A1
公开(公告)日：2011-03-31
申请号：US12890249
申请日：2010-09-24
申请人： Gavin P. Frith
发明人： Gavin P. Frith
CPC分类号： H01S3/0675 , H01S3/06716 , H01S3/06729 , H01S3/08059 , H01S3/094003 , H01S3/094007 , H01S3/094061
摘要： The present invention relates generally to devices for the generation and amplification of electromagnetic energy. The present invention relates more particularly to optical fiber devices, such as lasers and amplifiers, useful for generating and amplifying optical energy. Accordingly, one aspect of the present invention is an optical fiber device for providing optical gain at a selected wavelength, the optical fiber device comprising: one or more sources of optical pump energy; a first length of optical fiber having a core comprising a first cross-sectional region within which the concentration of a rare earth does not fall below 50% of its highest concentration; and a second length of optical fiber comprising a core comprising a first cross-sectional region within which the concentration of the rare earth does not fall below 50% of its highest concentration, wherein the intensity of optical pump energy is higher in the first length of optical fiber than in the second, and the first cross-sectional region of the core of the second length of optical fiber is larger in area than the first cross-sectional region of the core of the first length of optical fiber.
摘要翻译： 本发明一般涉及用于产生和放大电磁能的装置。 本发明更具体地涉及可用于产生和放大光能的光纤器件，例如激光器和放大器。 因此，本发明的一个方面是用于在所选波长处提供光增益的光纤装置，所述光纤装置包括：一个或多个光泵浦能源; 第一长度的光纤具有芯，所述芯包括稀土浓度不低于其最高浓度的50％的第一横截面区域; 以及第二长度的光纤，其包括芯，所述芯包括第一横截面区域，稀土的浓度不低于其最高浓度的50％以下，其中光泵浦能量的强度在第一长度的 第二光纤的纤芯的第一横截面积比第一长度的光纤的芯的第一横截面积大。
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