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1. 发明申请

WO2012054047A1 FIBER WITH ASYMMETRICAL CORE AND METHOD FOR MANUFACTURING SAME 审中-公开
标题翻译：具有非对称芯的纤维及其制造方法
公开(公告)号：WO2012054047A1
公开(公告)日：2012-04-26
申请号：PCT/US2010/053646
申请日：2010-10-22
申请人： IPG PHOTONICS CORPORATION , GAPONTSEV, Valentin , MYASNIKOV, Dan , ZAYTSEV, Llia , SERGUEEV, Vladimir , VYATKIN, Michael
发明人： GAPONTSEV, Valentin , MYASNIKOV, Dan , ZAYTSEV, Llia , SERGUEEV, Vladimir , VYATKIN, Michael
IPC分类号： G02B6/02 , G02B6/26 , H01S3/067
CPC分类号： G02B6/024 , C03B37/01228 , C03B2201/34 , C03B2203/10 , C03B2203/18 , C03B2203/30 , G02B6/02009 , G02B6/02338 , G02B6/0288 , H01S3/06712 , H01S3/06729
摘要： An optical active fiber is configured with an asymmetrically-shaped core having at least one long axis and a shortest axis which extends transversely to the long axis. The outmost cladding of the active fiber is configured with a marking indicating the orientation of the short axis. The marking allows for bending the fiber so that the shortest axis extends along and lies in the plane of the bend thereby minimizing distortion of a mode which is guided by the asymmetrically-shaped core as light propagates along the bend.
摘要翻译：光学有源光纤配置有具有至少一个长轴和横向于长轴延伸的最短轴的非对称形状的芯。有源光纤的最外层包层配置有指示短轴取向的标记。标记允许弯曲纤维，使得最短轴线沿弯曲平面延伸并且位于弯曲平面中，从而最小化由不对称形状的芯体引导的模式的变形，因为光沿弯曲传播。

2. 发明申请

WO2011031704A2 MULTIMODE FIBER 审中-公开
标题翻译：多模光纤
公开(公告)号：WO2011031704A2
公开(公告)日：2011-03-17
申请号：PCT/US2010/048054
申请日：2010-09-08
申请人： IPG PHOTONICS CORPORATION , GAPONTSEV, Valentin , VYATKIN, Michael , FOMIN, Valentin , PLATANOV, Nikolai
发明人： GAPONTSEV, Valentin , VYATKIN, Michael , FOMIN, Valentin , PLATANOV, Nikolai
IPC分类号： G02B6/028 , G02B6/14
CPC分类号： H01S3/06729 , G02B6/03611 , G02B6/14 , H01S3/0672 , H01S3/06737 , H01S3/06745 , H01S3/094007
摘要： A monolithic fiber is configured with a double bottleneck-shaped multimode (MM) core capable of supporting substantially only a fundamental mode at a given wavelength and having opposite end regions, frustoconically shaped transformer regions, which run inwards from the respective end regions, and a central uniformly dimensioned region, which bridges the transformer regions. The MM core has a refractive step-index profile which is configured with a centrally positioned dip having a variable width along the length of the fiber. The width of the dip is relatively small at the end regions of the MM core so as to support only the fundamental mode with a Gaussian profile. As the dip becomes larger along the input transformer region, it gradually shapes the Gaussian profile into the ring profile of the fundamental mode, which is guided along the central region of the MM core. The dip gradually becomes smaller along the output transition region so as to shape the ring profile back into the substantially Gaussian profile of the fundamental mode radiated from the output end region of the MM core. The refractive index profile has a ring area doped with one or more rare-earth elements and configured to amplify substantially only the fundamental mode.
摘要翻译：单芯光纤配置有双瓶颈型多模（MM）芯，其能够基本上仅支持在给定波长处的基模，并且具有从相应端部区域向内延伸的相对端区域，截头圆锥形变压器区域，以及中心均匀尺寸的区域，桥接变压器区域。 MM芯具有折射阶梯折射率分布，该轮廓配置有沿着光纤的长度具有可变宽度的中心定位的倾角。在MM核的端部区域，浸渍的宽度相对较小，以便仅支持具有高斯分布的基模。随着沿着输入变压器区域的倾角变大，它逐渐将高斯分布形状形成为沿着MM芯的中心区域引导的基模的环形轮廓。沿着输出过渡区域的倾斜逐渐变小，以便将环形轮廓形状形成为从MM芯的输出端区域辐射的基本模式的基本高斯分布。折射率分布具有掺杂有一个或多个稀土元素的环形区域并且被配置为仅基本上放大基本模式。

3. 发明申请

WO2011068980A3 SINGLE MODE HIGH POWER FIBER LASER SYSTEM 审中-公开
公开(公告)号：WO2011068980A3
公开(公告)日：2011-06-09
申请号：PCT/US2010/058750
申请日：2010-12-02
申请人： IPG PHOTONICS CORPORATION
发明人： GAPONTSEV, Valentin , FOMIN, Valentin , PLATANOV, Nikolai , VYATKIN, Michael
IPC分类号： H01S3/067 , G02B6/02
摘要： A high power single mode fiber laser system is configured with an active fiber including co extending multimode core (MM) and cladding around the MM core. The MM core is doped with one or more ions selected from rare earth and transitional metals and has a bottleneck cross in accordance with one aspect of the disclosure. The bottleneck cross- section includes a relatively small uniformly dimensioned input end region, a frustoconical region and a relatively large uniformly dimensioned amplifying region. The refractive step index of the MM core is configured with a central dip shaped and dimensioned along the input region so as not to disturb a Gaussian field profile of fundamental mode, gradually transform the Gaussian field profile into the ring profile of the fundamental mode and support the latter along the amplifying region. In accordance with a further aspect, the core is further provided with an output transforming region with the dip which gradually shapes the ring field profile in the Gaussian field profile further distortlessly supported by the output end region. A variety of end and side pumping arrangements are employed with the structures configured in accordance with the first and second aspects.

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