公开(公告)号：WO2017027862A1

公开(公告)日：2017-02-16

申请号：PCT/US2016/046931

申请日：2016-08-12

Applicant: NUFERN

Inventor： JOLLIVET, Clemence ,  FARLEY, Kevin ,  ABRAMCZYK, Jaroslaw ,  CONROY, Michael ,  TANKALA, Kanishka

IPC: G02B6/036 ,  G02B6/26 ,  G02B6/28 ,  G02B27/09

CPC classification number: G02B6/14 ,  G02B6/03605 ,  G02B6/264 ,  G02B6/421 ,  G02B27/0927 ,  H01S3/067 ,  H01S3/06729 ,  H01S3/06737 ,  H01S3/0804

Abstract: 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.

Abstract translation: 本公开更多涉及有用的模式混合光纤，例如在提供具有期望的光束产品参数和光束轮廓的光纤激光输出。 一方面，本公开提供了一种用于传送具有波长的光辐射的模式混合光纤，具有输入端的模式混合光纤，输出端，中心线和折射率分布，模式混合光纤包括： 最内芯，最内芯具有折射率分布; 以及围绕最内芯设置的包层，其中所述模式混合光纤在所述波长处具有至少五个模式，并且其中所述模式混合光纤被配置为将其输入端的光输入的一部分从其低阶 模式到其高阶模式。

公开(公告)号：WO2017136831A1

公开(公告)日：2017-08-10

申请号：PCT/US2017/016718

申请日：2017-02-06

Applicant: NUFERN

Inventor： JOLLIVET, Clemence ,  FARLEY, Kevin ,  ABRAMCZYK, Jaroslaw ,  CONROY, Michael ,  TANKALA, Kanishka ,  AHMADI, Peyman ,  LIM, Eric

IPC: G02B6/02 ,  G02B6/14 ,  H01S3/067 ,  H01S3/08 ,  H01S3/094 ,  G02B27/09

CPC classification number: G02B6/02023 ,  G02B6/02042 ,  G02B6/14 ,  G02B27/0927 ,  H01S3/06729 ,  H01S3/06733 ,  H01S3/06737 ,  H01S3/0804 ,  H01S3/094007

Abstract: 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 that includes a core having a refractive index profile; and a cladding disposed about the core. The core of the mode mixing optical fiber supports at least two (e.g., at least five) guided modes at the wavelength. The mode mixing optical fiber is configured to substantially distribute optical radiation having the wavelength propagating therein (e.g., input at its input end or generated or amplified within the core) among a plurality of the guided modes (e.g., to distribute a substantial fraction of the optical radiation having the wavelength propagating therein from its lower-order guided modes to its higher-order guided modes).

Abstract translation: 本公开更多地涉及可用于例如提供具有期望的光束产品参数和光束轮廓的光纤激光器输出的模式混合光纤。 在一个方面，本公开提供了一种模式混合光纤，其包括具有折射率分布的芯; 以及围绕芯设置的包层。 模混光纤的纤芯在波长处支持至少两个（例如至少五个）导模。 模式混合光纤被配置成在多个导模之中基本上分布具有在其中传播的波长的光辐射（例如，在其输入端处的输入或者在芯内产生或放大）（例如，以分配大部分 具有从其较低阶引导模式向其较高阶引导模式传播的波长的光辐射）。

公开(公告)号：WO2018152338A1

公开(公告)日：2018-08-23

申请号：PCT/US2018/018387

申请日：2018-02-15

Applicant: NUFERN

Inventor： JOLLIVET, Clemence ,  FARLEY, Kevin ,  TANKALA, Kanishka ,  EDGECUMBE, John

IPC: H01S3/094 ,  H01S3/16 ,  H01S3/0941 ,  H01S3/067

Abstract: The present disclosure relates to systems and methods for reducing thermal effects in double- clad optical fiber amplifying systems via control of the pump absorption. One optical fiber amplifying system for reducing thermal effects includes one or more first optical pump sources, each configured to output radiation of a pump wavelength, a bridge optical fiber, hav ing an input configured to recei v e the radiation of the pump wavelength output by the one or more first optical pump sources and an output, and an active optical fiber that has a first end subsianiially directly coupled to the output of the bridge optical fiber and a second end. The active optical fiber is configured to amplify radiation of the first active wavelength when pumped with radiation of the pump wavelength.

公开(公告)号：WO2010085605A1

公开(公告)日：2010-07-29

申请号：PCT/US2010/021738

申请日：2010-01-22

Applicant: NUFERN ,  TANKALA, Kanishka ,  FARLEY, Kevin

Inventor： TANKALA, Kanishka ,  FARLEY, Kevin

IPC: G02B6/02

CPC classification number: G02B6/03694 ,  C03C13/045 ,  G02B6/03633 ,  G02B6/03638 ,  G02B6/03661

Abstract: 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.

Abstract translation: 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。