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公开(公告)号：US09547121B2
公开(公告)日：2017-01-17
申请号：US14166600
申请日：2014-01-28
Applicant: Lumentum Operations LLC
Inventor： Kai-Chung Hou , Dahv Kliner , Martin H. Muendel , Jeremy Weston
CPC classification number: H01S3/06729 , B23K26/0622 , B23K26/0626 , B23K26/36 , B29D11/00663 , G02B6/02066 , G02B6/14 , G02B6/264 , G02B6/2852 , H01S3/06733 , H01S3/094007 , H01S3/0941
Abstract: A cladding stripper includes a plurality of transversal notches or grooves in the outer surface of an exposed inner cladding of a double clad optical fiber. Position and orientation of the notches can be selected to even out cladding light release along the cladding light stripper, enabling more even temperature distributions due to released cladding light. The notches on the optical fiber can be made with a laser ablation system.
Abstract translation: 包层剥离器在双包层光纤的暴露的内包层的外表面中包括多个横向凹口或沟槽。 可以选择凹口的位置和取向以均匀地包覆沿着包层光剥离器的光释放，由于释放的包层光而能够实现更均匀的温度分布。 光纤上的凹口可以用激光烧蚀系统制成。
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12.发明授权公开(公告)号：US09377593B2
公开(公告)日：2016-06-28
申请号：US14547183
申请日：2014-11-19
Applicant: Lumentum Operations LLC
Inventor： Xiuquan Ma , Hongbo Yu , Martin H. Muendel
CPC classification number: G02B6/4221 , G01M11/33 , G02B6/2555 , G02B6/3656 , G02B6/3801 , H04B10/2581
Abstract: Alignment of a multimode waveguide to a source of light or another waveguide is evaluated using a multi-wavelength light source and a modal decomposition processing of an intensity profile of a waveguide output beam, wherein inter-modal interference is averaged out over wavelength. Fitting a superposition of mode intensity profiles to a wavelength-averaged intensity profile of the output beam provides information about the modal composition of the output beam, which may be used to assess the alignment of the multimode waveguide with respect to the input light beam, and to provide a feedback for guiding a waveguide alignment process.
Abstract translation: 使用多波长光源和波导输出光束的强度分布的模态分解处理来评估多模波导到光源或另一波导的对准，其中在波长上平均化了模式间干扰。 将模式强度分布的叠加装配到输出光束的波长平均强度分布中提供关于输出光束的模态组成的信息，其可以用于评估多模波导相对于输入光束的对准，以及 以提供用于引导波导对准过程的反馈。
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公开(公告)号：US11789335B2
公开(公告)日：2023-10-17
申请号：US17453441
申请日：2021-11-03
Applicant: Lumentum Operations LLC
Inventor： Richard D. Faulhaber , Martin H. Muendel , Patrick Gregg
CPC classification number: G02F1/365 , G02F1/3536
Abstract: In some implementations, a monolithic optical fiber may comprise a tapered core having a first diameter at an input end and a second diameter at an output end. The tapered core may comprise a first tapered region at the input end, a second tapered region at the output end, and a central region having a constant diameter that is larger than the first diameter and the second diameter. The first tapered region expands monotonically from the first diameter to the constant diameter of the central region along a length of the first tapered region, and the second tapered region contracts monotonically from the constant diameter of the central region to the second diameter along a length of the second tapered region. The monolithic optical fiber may be used as a delivery fiber to deliver a laser beam from a fiber laser engine to a process head.
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公开(公告)号：US11624932B2
公开(公告)日：2023-04-11
申请号：US16592488
申请日：2019-10-03
Applicant: Lumentum Operations LLC
Inventor： Martin H. Muendel , Patrick Gregg
IPC: G02B27/28 , B23K26/064 , B23K26/073 , B23K26/08 , B23K26/38
Abstract: An optical device may include a polarization splitter to split a unidirectional rotary optical beam into a first rotary optical beam having a first polarization state and a second rotary optical beam having a second polarization state. The unidirectional rotary optical beam and the second rotary optical beam may have optical power with a first direction of spatial rotation. The optical device may include a reflective element to reverse a parity of the first rotary optical beam in association with causing optical power of the first rotary optical beam to have a second direction of spatial rotation. The optical device may include a polarization combiner to, after reversal of the parity of the first rotary optical beam, combine the first rotary optical beam and the second rotary optical beam to create a bi-directional rotary optical beam having the first polarization state and the second polarization state.
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公开(公告)号：US11340467B2
公开(公告)日：2022-05-24
申请号：US16860476
申请日：2020-04-28
Applicant: Lumentum Operations LLC
Inventor： Patrick Gregg , Richard D. Faulhaber , Martin H. Muendel , Vincent Petit , James J. Morehead
Abstract: An optical fiber may include a first core, a second core, and a cladding surrounding the first core and the second core. The second core may be at an off-center location with respect to a center of the optical fiber, or the second core may include an azimuthally nonuniform section at the off-center location. The second core may twist about an axis of the optical fiber along a length of the optical fiber, and the second core being twisted about the axis may cause an optical beam, launched into the second core at a first end of the optical fiber, to be at least partially converted to a rotary optical beam at a second end of the optical fiber.
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Patent Agency Ranking
公开(公告)号：US11209595B2
公开(公告)日：2021-12-28
申请号：US16839911
申请日：2020-04-03
Applicant: Lumentum Operations LLC
Inventor： Martin H. Muendel , Richard D. Faulhaber , Michael Lovelady
IPC: G02B6/26
Abstract: An optical fiber endcap device may include an input facet spliced onto an input fiber and an output end through which counterpropagating light enters the optical fiber endcap device. The optical fiber endcap device further includes a plurality of angled facets that are arranged at respective angles relative to an axis of the optical fiber endcap device to reflect at least a portion of the counterpropagating light back through the output end of the optical fiber endcap device.
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公开(公告)号：US11175449B2
公开(公告)日：2021-11-16
申请号：US16657070
申请日：2019-10-18
Applicant: Lumentum Operations LLC
Inventor： Vincent Petit , Martin H. Muendel
Abstract: An optical fiber may comprise a core doped with one or more active ions to guide signal light from an input end of the optical fiber to an output end of the optical fiber, a cladding surrounding the core to guide pump light from the input end of the optical fiber to the output end of the optical fiber, and one or more inserts formed in the cladding surrounding the core. Each of the one or more inserts may have a geometry (e.g., a cross-sectional size, a helical pitch, and/or the like) that varies along a longitudinal length of the optical fiber, which may cause an absorption of the pump light to be modulated along the longitudinal length of the optical fiber.
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公开(公告)号：US10429584B2
公开(公告)日：2019-10-01
申请号：US15802897
申请日：2017-11-03
Applicant: Lumentum Operations LLC
Inventor： Martin H. Muendel , James J. Morehead
IPC: G02B6/44 , G02B6/14 , G02B6/024 , G02B6/26 , G02B6/27 , C03B37/027 , C03B37/15 , G02B6/10 , G02B6/02 , G02B6/036
Abstract: An optical fiber device may include a unitary core including a primary section and a secondary section, wherein at least a portion of the secondary section is offset from a center of the unitary core, wherein the unitary core twists about an optical axis of the optical fiber device along a length of the optical fiber device, and wherein a refractive index of the primary section is greater than a refractive index of the secondary section; and a cladding surrounding the unitary core.
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公开(公告)号：US09823422B2
公开(公告)日：2017-11-21
申请号：US14984483
申请日：2015-12-30
Applicant: Lumentum Operations LLC , Amada Holdings Co., Ltd.
Inventor： Martin H. Muendel , Dahv Kliner
IPC: G02B6/26 , G02B6/32 , G02B6/42 , B23K26/06 , B23K26/073
CPC classification number: G02B6/32 , B23K26/0626 , B23K26/0648 , B23K26/073 , B23K26/0734 , G02B6/262 , G02B6/4206 , G02B6/4216 , G02B6/4226 , G02B6/4296
Abstract: An optical delivery waveguide for a material laser processing system includes a small lens at an output end of the delivery waveguide, transforming laser beam divergence inside the waveguide into a spot size after the lens. By varying the input convergence angle and/or launch angle of the laser beam launched into the waveguide, the output spot size can be continuously varied, thus enabling a continuous and real-time laser spot size adjustment on the workpiece, without having to replace the delivery waveguide or a process head. A divergence of the laser beam can also be adjusted dynamically and in concert with the spot size.
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公开(公告)号：US09377667B2
公开(公告)日：2016-06-28
申请号：US14719617
申请日：2015-05-22
Applicant: Lumentum Operations LLC
Inventor： Martin H. Muendel , James J. Morehead
CPC classification number: G02F1/353 , G02F1/3551 , G02F1/37 , G02F2001/354 , G02F2203/055 , H01S3/0092 , H01S3/109
Abstract: Cascaded optical harmonic generators and methods for cascaded optical harmonic generation are disclosed. Relative disposition of individual harmonic generators of a cascaded harmonic generator in an optical path of the fundamental optical beam may be reversed. In a third harmonic generator, the fundamental optical beam may enter the third harmonic crystal first, and the second harmonic crystal second. When the fundamental optical beam enters the third harmonic crystal first, the fundamental light may remain non-depleted by second harmonic generation process.
Abstract translation: 公开了级联光谐波发生器和用于级联光谐波发生的方法。 级联谐波发生器的单个谐波发生器在基本光束的光路中的相对配置可以相反。 在三次谐波发生器中，基本光束可以先进入三次谐波晶体，二次谐波晶体进入第二谐波晶体。 当基本光束首先进入三次谐波晶体时，基波光可以通过二次谐波产生过程保持不耗尽。
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