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公开(公告)号：US20200081187A1
公开(公告)日：2020-03-12
申请号：US16573814
申请日：2019-09-17
Applicant: Lumentum Operations LLC
Inventor： Patrick GREGG , Richard D. FAULHABER , James J. MOREHEAD , Vincent PETIT , Martin H. MUENDEL
Abstract: A device may splice, at a target splice point, a first end of a twisted fiber having a non-concentric core to an input end of a target fiber having a concentric core to form a spliced fiber wherein the concentric core of the target fiber and the non-concentric core of the twisted fiber have a particular offset at the target splice point. The device may taper at least a portion of the twisted fiber to form a tapered region of the spliced fiber and such that the particular offset at the target splice point corresponds to a pre-configured core offset wherein the target splice point is within the tapered region of the spliced fiber.
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公开(公告)号：US20200018901A1
公开(公告)日：2020-01-16
申请号：US16582487
申请日：2019-09-25
Applicant: Lumentum Operations LLC
Inventor： Martin H. MUENDEL , James J. MOREHEAD
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：US20170219912A1
公开(公告)日：2017-08-03
申请号：US15429804
申请日：2017-02-10
Applicant: Lumentum Operations LLC
Inventor： James J. MOREHEAD , Loren A. EYRES , Bertram C. JOHNSON , Martin H. MUENDEL , Derek A. TUCKER
CPC classification number: G02F1/3501 , G02F1/353 , G02F1/3551 , G02F1/37 , G02F2001/3503 , G02F2001/3505 , G02F2001/3507 , G02F2001/3509 , G02F2001/354 , G02F2201/20 , G02F2203/055 , H01S3/0092
Abstract: A cascaded harmonic generator, for cascaded optical harmonic generation from an optical beam provided by a laser source, may include a second harmonic generator to generate a second harmonic optical beam based on a residual beam associated with the optical beam. The cascaded harmonic generator may include a third harmonic generator to generate a third harmonic optical beam based on the second harmonic optical beam and the optical beam. The third harmonic generator may be positioned in an optical path upstream from the second harmonic generator. A harmonic generator delay time, associated with the optical path, may be approximately equal to, or may be an approximate integer multiple of, a laser source round-trip time.
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公开(公告)号：US20160181756A1
公开(公告)日：2016-06-23
申请号：US14576335
申请日：2014-12-19
Applicant: Lumentum Operations LLC
Inventor： Martin H. MUENDEL , Xiuquan MA , Kai-Hsiu LIAO , Matthew KUTSURIS
CPC classification number: H01S3/06708 , H01S3/0675 , H01S3/06754 , H01S3/08018 , H01S3/08022 , H01S3/0804 , H01S3/091 , H01S3/094007 , H01S3/094061 , H01S3/09415 , H01S3/10 , H01S3/10023 , H01S3/1618
Abstract: A modal instability of a fiber amplifier may be reduced by coupling, e.g. splicing, a length of passive multimode optical fiber to an active multimode optical fiber of the fiber amplifier. Upon launching light into the passive optical fiber, some higher order transversal modes may be excited in the passive optical fiber. The higher-order modes may interfere with the fundamental mode in the passive multimode optical fiber. However, the intermodal interference of the launched modes does not cause thermal gradients in the passive optical fiber. Upon propagation in the passive multimode optical fiber, the excited optical modes may lose mutual coherence, causing a reduction of contrast of the intermodal interference pattern along the doped core of the active optical fiber, effectively reducing modal instability in the active optical fiber.
Abstract translation: 光纤放大器的模态不稳定性可以通过耦合，例如， 将一段长度的无源多模光纤连接到光纤放大器的有源多模光纤。 在将光发射到无源光纤中时，可以在无源光纤中激发一些较高阶的横向模式。 高阶模式可能会干扰无源多模光纤中的基本模式。 然而，发射模式的联合干扰不会导致无源光纤中的热梯度。 在无源多模光纤中传播时，激发的光学模式可能失去相互相干性，导致沿着有源光纤的掺杂核心的多模式干涉图案的对比度降低，有效地降低了有源光纤中的模态不稳定性。
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公开(公告)号：US20250155641A1
公开(公告)日：2025-05-15
申请号：US19027002
申请日：2025-01-17
Applicant: Lumentum Operations LLC
Inventor： Richard D. FAULHABER , Martin H. MUENDEL , Patrick GREGG , James J. MOREHEAD
Abstract: In some implementations, an optical fiber may include a core and a cladding surrounding the core. The core and the cladding may provide light guidance along the optical fiber in a light propagation direction. The core may have a taper in the light propagation direction in a section of the optical fiber. A diameter of the core may decrease independently of a diameter of the cladding in the section of the optical fiber.
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Patent Agency Ranking
公开(公告)号：US20250007233A1
公开(公告)日：2025-01-02
申请号：US18474664
申请日：2023-09-26
Applicant: Lumentum Operations LLC
Inventor： Richard D. FAULHABER , Martin H. MUENDEL , Gongwen ZHU
IPC: H01S3/094 , G02B6/02 , G02B6/04 , H01S3/0941
Abstract: In some implementations, an optical system may comprise a plurality of pump sources, an output fiber, and a combiner that comprises an input end coupled to the plurality of pump sources and an output end coupled to the output fiber. In some implementations, the combiner comprises a plurality of pump fibers coupled to the plurality of pump sources, and one or more filler fibers that are made from a cladding material. In some implementations, a quantity of the plurality of pump fibers is associated with an asymmetric packing geometry, and the plurality of pump fibers and the one or more filler fibers have a symmetric packing geometry at the input end of the combiner and a circular cross-section at the output end of the combiner. In some implementations, the plurality of pump fibers and the one or more filler fibers each have a substantially circular cross-section.
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公开(公告)号：US20220342154A1
公开(公告)日：2022-10-27
申请号：US17362300
申请日：2021-06-29
Applicant: Lumentum Operations LLC
Inventor： Martin H. MUENDEL , Richard D. FAULHABER
Abstract: A laser beam delivery system includes an optical beam launcher device and a waveguide assembly. The optical beam launcher device includes an optical relay system that includes a beam splitting optic that is configured to cause a laser beam that is input into the optical beam launcher device to be split into a first laser sub-beam and a second laser sub-beam, cause the first laser sub-beam to transmit to a first region of an input lens of the waveguide assembly, and cause the second laser sub-beam to transmit to a second region of the input lens. The waveguide assembly is configured to transmit the first laser sub-beam and the second laser sub-beam from the input lens to an output lens of the waveguide assembly, wherein the first laser sub-beam and the second laser sub-beam transmit from the waveguide assembly and form an output laser beam.
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公开(公告)号：US20220334327A1
公开(公告)日：2022-10-20
申请号：US17304999
申请日：2021-06-29
Applicant: Lumentum Operations LLC
Inventor： Martin H. MUENDEL , Patrick GREGG , Richard D. FAULHABER , Jeff GREGG , James J. MOREHEAD
Abstract: In some implementations, a fiber optic combiner may comprise an enclosing tube having a geometric shape and multiple optical fibers bundled within the enclosing tube. In some implementations, the multiple fibers comprise at least one optical fiber having a core and a non-circular cladding surrounding the core. The non-circular cladding may cause the multiple optical fibers to have a larger tube fill factor and a lower expected beam parameter product increase factor relative to the multiple optical fibers all having circular claddings.
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公开(公告)号：US20220077643A1
公开(公告)日：2022-03-10
申请号：US17454709
申请日：2021-11-12
Applicant: Lumentum Operations LLC
Inventor： Vincent PETIT , Martin H. MUENDEL
IPC: H01S3/067 , C03B37/027 , C03B37/012
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. The core 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：US20210373261A1
公开(公告)日：2021-12-02
申请号：US16947465
申请日：2020-08-03
Applicant: Lumentum Operations LLC
Inventor： Martin H. MUENDEL , Patrick GREGG , Richard D. FAULHABER , James J. MOREHEAD , Alex HATCHER
Abstract: A graded index fiber having a refractive index profile that causes a beam to be re-imaged in the graded index fiber with a regular period may include a set of bends that have a bend period matched to or nearly matched to a pitch of the graded index fiber. For example, the set of bends may be formed in the graded index fiber using one or more bending devices that include one or more protrusions that have a periodicity matched to or nearly matched to a pitch of the graded index fiber. A first section of the one or more bending devices may be actuated to move towards a second section of the one or more bending devices such that the one or more protrusions cause the bends to be formed in the graded index fiber.
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