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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：US10761267B2
公开(公告)日：2020-09-01
申请号：US15752546
申请日：2016-08-12
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：US20180233875A1
公开(公告)日：2018-08-16
申请号：US15897900
申请日：2018-02-15
申请人： Nufern
IPC分类号： H01S3/067 , H01S3/0941 , H01S3/16
CPC分类号： H01S3/06754 , H01S3/06733 , H01S3/094007 , H01S3/094011 , H01S3/094053 , H01S3/09408 , H01S3/0941 , H01S3/09415 , H01S3/1616
摘要： The present disclosure relates to systems and methods for reducing thermal effects in double-clad 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, having an input configured to receive 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 substantially 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.
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公开(公告)号：US20190052043A1
公开(公告)日：2019-02-14
申请号：US16075573
申请日：2017-02-06
申请人： NUFERN
发明人： Clemence Jollivet , Kevin Farley , Jaroslaw Abramczyk , Michael Conroy , Kanishka Tankala , Peyman Ahmadi , Eric Lim
IPC分类号： H01S3/067 , G02B6/14 , G02B6/036 , C03B37/027
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 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).
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公开(公告)号：US20190011637A1
公开(公告)日：2019-01-10
申请号：US15752546
申请日：2016-08-12
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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6.发明申请OPTICAL FIBER ARTICLE FOR HANDLING HIGHER POWER AND METHOD OF FABRICATING OR USING 有权用于处理高功率的光纤文章和制作或使用的方法公开(公告)号：US20130291603A1
公开(公告)日：2013-11-07
申请号：US13935077
申请日：2013-07-03
申请人： Nufern
IPC分类号： C03B37/012
CPC分类号： C03B37/01222 , C03B37/01228 , C03B37/01231 , C03B37/02763 , C03B2203/18 , C03B2203/20 , C03B2203/32 , C03B2203/34 , C03B2205/06 , C03B2205/07 , G02B6/02042 , H01S3/06704 , H01S3/06708
摘要： An optical fiber preform, and method for fabricating, having a first core, a second core spaced from the first core and first and second regions, the first region having an outer perimeter having a first substantially straight length and the second region having an outer perimeter having a second substantially straight length facing the first straight length. One of the regions can comprise the first core and the other comprises the second core. The preform can be drawn with rotation to provide a fiber wherein a first core of the fiber is multimode at a selected wavelength of operation and a second core of the fiber is spaced from and winds around the first core and has a selected longitudinal pitch. The second core of the fiber can couple to a higher order mode of the first core and increase the attenuation thereof relative to the fundamental mode of the first core.
摘要翻译： 一种光纤预制件及其制造方法，具有第一芯体，与第一芯体以及第一和第二区域隔开的第二芯体，第一区域具有第一基本上直的长度的外周边，第二区域具有外周边 具有面向第一直线长度的第二基本上直的长度。 其中一个区域可以包括第一核心，另一个包括第二核心。 预成型件可以旋转拉伸以提供纤维，其中纤维的第一纤芯在选定的操作波长处是多模的，并且纤维的第二纤芯与第一纤芯间隔开并缠绕在第一纤芯上并且具有选定的纵向间距。 光纤的第二核心可以耦合到第一核心的更高阶模式并且相对于第一核心的基本模式增加其衰减。
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7.发明授权Optical fiber article for handling higher power and method of fabricating or using 有权用于处理更高功率的光纤制品和制造或使用方法公开(公告)号：US09352996B2
公开(公告)日：2016-05-31
申请号：US13935077
申请日：2013-07-03
申请人： Nufern
IPC分类号： C03B37/012 , C03B37/027 , G02B6/02 , H01S3/067
CPC分类号： C03B37/01222 , C03B37/01228 , C03B37/01231 , C03B37/02763 , C03B2203/18 , C03B2203/20 , C03B2203/32 , C03B2203/34 , C03B2205/06 , C03B2205/07 , G02B6/02042 , H01S3/06704 , H01S3/06708
摘要： An optical fiber preform, and method for fabricating, having a first core, a second core spaced from the first core and first and second regions, the first region having an outer perimeter having a first substantially straight length and the second region having an outer perimeter having a second substantially straight length facing the first straight length. One of the regions can comprise the first core and the other comprises the second core. The preform can be drawn with rotation to provide a fiber wherein a first core of the fiber is multimode at a selected wavelength of operation and a second core of the fiber is spaced from and winds around the first core and has a selected longitudinal pitch. The second core of the fiber can couple to a higher order mode of the first core and increase the attenuation thereof relative to the fundamental mode of the first core.
摘要翻译： 一种光纤预制件及其制造方法，具有第一芯体，与第一芯体以及第一和第二区域隔开的第二芯体，第一区域具有第一基本上直的长度的外周边，第二区域具有外周边 具有面向第一直线长度的第二基本上直的长度。 其中一个区域可以包括第一核心，另一个包括第二核心。 预成型件可以旋转拉伸以提供纤维，其中纤维的第一纤芯在选定的操作波长处是多模的，并且纤维的第二纤芯与第一纤芯间隔开并卷绕第一纤芯并具有选定的纵向间距。 光纤的第二核心可以耦合到第一核心的更高阶模式并且相对于第一核心的基本模式增加其衰减。
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