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1. 发明专利

CA2998515A1 MODE MIXING OPTICAL FIBERS AND METHODS AND SYSTEMS USING THE SAME 未知
公开(公告)号：CA2998515A1
公开(公告)日：2017-02-16
申请号：CA2998515
申请日：2016-08-12
申请人： NUFERN
发明人： JOLLIVET CLEMENCE , FARLEY KEVIN , ABRAMCZYK JAROSLAW , CONROY MICHAEL , TANKALA KANISHKA
IPC分类号： G02B6/036 , G02B6/26 , G02B6/28 , G02B27/09
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.

2. 发明专利

CA3013343A1 MODE MIXING OPTICAL FIBERS AND METHODS AND SYSTEMS USING THE SAME 未知
公开(公告)号：CA3013343A1
公开(公告)日：2017-08-10
申请号：CA3013343
申请日：2017-02-06
申请人： NUFERN
发明人： JOLLIVET CLEMENCE , FARLEY KEVIN , ABRAMCZYK JAROSLAW , CONROY MICHAEL , TANKALA KANISHKA , AHMADI PEYMAN , LIM ERIC
IPC分类号： G02B6/02 , G02B6/14 , G02B27/09 , H01S3/067 , H01S3/08 , H01S3/094
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).

3. 发明申请

WO2005074573A2 METHOD AND APPARATUS FOR PROVIDING LIGHT HAVING A SELECTED POLARIZATION WITH AN OPTICAL FIBER 审中-公开
标题翻译：用于向具有光纤的选择极化的光提供光的方法和装置
公开(公告)号：WO2005074573A2
公开(公告)日：2005-08-18
申请号：PCT/US2005002908
申请日：2005-01-31
申请人： NUFERN , ABRAMCZYK JAROSLAW , MANYAM UPENDRA H , SAMSON BRYCE N , TANKALA KANISHKA
发明人： ABRAMCZYK JAROSLAW , MANYAM UPENDRA H , SAMSON BRYCE N , TANKALA KANISHKA
IPC分类号： H01S3/067
CPC分类号： H01S3/0675 , G02B6/105 , H01S3/06712 , H01S3/06729 , H01S3/08045 , H01S3/09415 , H01S3/1067 , H01S3/1618
摘要： Optical apparatus (110, 500, 600, 800, 1000) for providing light having a selected linear polarization having a polarization ratio, the apparatus (110, 500, 600, 800, 1000) comprising a length of optical fiber (120, 504, 604, 804, 1001) comprising a rare earth for providing light having a first wavelength responsive to receiving pump light having a second wavelength that is different than said first wavelength, wherein if the length of optical fiber (120, 504, 604, 804, 1004) were placed in a first position between the length of fiber (120, 504, 604, 804, 1004) is substantially linearly oriented (20) the fiber (120, 504, 604, 804, 1004) could propagate at the first wavelength a fundamental mode and a plurality of higher order modes and the apparatus (110, 500, 600, 800, 1000) could provide light having a first polarization ratio for the selected linear polarization and an M parameter, and wherein the length of fiber (120, 504, 604, 804, 1004) is positioned in a second position that increases the bend loss of the fiber relative to the first position such that, responsive to the increased bend loss, the apparatus (110, 500, 600, 800, 1000) can provide light having a reduced M parameter as well as a second polarization ratio for the selected polarization that is increased relative to the first polarization ratio, the increase being at least 6 dB greater than the first polarization ratio, and wherein when the length of fiber (120, 504, 604, 804, 1004) is in the second position the apparatus (110, 500, 600, 800, 1000) can provide a slope efficiency that is at least 50 % of the ratio of the second wavelength to the first wavelength.
摘要翻译：用于提供具有偏振比的所选线性偏振光的光学装置（110,500,600,800,1000），所述装置（110,500,600,800,1000）包括一段长度的光纤（120,504，包括稀土，用于提供响应于接收具有不同于所述第一波长的第二波长的泵浦光的具有第一波长的光，其中如果光纤的长度（120,504,604,801， 1004）被放置在光纤（120,504,604,804,1004）的长度之间的第一位置，基本上线性地定向（20），光纤（120,504,604,804,1004）可以在第一波长处传播基本模式和多个高阶模式，并且所述装置（110,500,600,800,1000）可以提供具有所选择的线性偏振的第一偏振比和具有M 2参数的光，并且其中，光纤（120,504,604,804,1004）位于第二位置增加光纤相对于第一位置的弯曲损耗，使得响应于增加的弯曲损耗，设备（110,500,600,800,1000）可以提供具有减小的M 2参数的光以及所选择的偏振的第二偏振比相对于第一偏振比增加，所述增加比第一偏振比大至少6dB，并且其中当光纤（120,504,604,804,1004）的长度为在第二位置，设备（110,500,600,800,1000）可以提供至少50％的第二波长与第一波长的比率的斜率效率。

4. 发明公开

EP1733460A4 METHOD AND APPARATUS FOR PROVIDING LIGHT HAVING A SELECTED POLARIZATION WITH AN OPTICAL FIBER 审中-公开
标题翻译：方法和一种用于提供光选择偏振光纤一
公开(公告)号：EP1733460A4
公开(公告)日：2009-04-15
申请号：EP05712370
申请日：2005-01-31
申请人： NUFERN
发明人： ABRAMCZYK JAROSLAW , MANYAM UPENDRA H , SAMSON BRYCE N , TANKALA KANISHKA
IPC分类号： H01S3/067 , H01S3/08
CPC分类号： H01S3/0675 , G02B6/105 , H01S3/06712 , H01S3/06729 , H01S3/08045 , H01S3/09415 , H01S3/1067 , H01S3/1618
摘要： Optical apparatus (110, 500, 600, 800, 1000) for providing light having a selected linear polarization having a polarization ratio, the apparatus (110, 500, 600, 800, 1000) comprising a length of optical fiber (120, 504, 604, 804, 1001) comprising a rare earth for providing light having a first wavelength responsive to receiving pump light having a second wavelength that is different than said first wavelength, wherein if the length of optical fiber (120, 504, 604, 804, 1004) were placed in a first position between the length of fiber (120, 504, 604, 804, 1004) is substantially linearly oriented (20) the fiber (120, 504, 604, 804, 1004) could propagate at the first wavelength a fundamental mode and a plurality of higher order modes and the apparatus (110, 500, 600, 800, 1000) could provide light having a first polarization ratio for the selected linear polarization and an M2 parameter, and wherein the length of fiber (120, 504, 604, 804, 1004) is positioned in a second position that increases the bend loss of the fiber relative to the first position such that, responsive to the increased bend loss, the apparatus (110, 500, 600, 800, 1000) can provide light having a reduced M2 parameter as well as a second polarization ratio for the selected polarization that is increased relative to the first polarization ratio, the increase being at least 6 dB greater than the first polarization ratio, and wherein when the length of fiber (120, 504, 604, 804, 1004) is in the second position the apparatus (110, 500, 600, 800, 1000) can provide a slope efficiency that is at least 50 % of the ratio of the second wavelength to the first wavelength.

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