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公开(公告)号：US10802209B2
公开(公告)日：2020-10-13
申请号：US15687052
申请日：2017-08-25
Applicant: Lumentum Operations LLC
Inventor： Zong Kwei Wu , Kwang Chong , Martin H. Muendel
Abstract: A cladding light stripper may include a double-clad optical fiber having a core for guiding signal light, an inner cladding surrounding the core, and an outer cladding surrounding the inner cladding. The optical fiber may include a stripped portion forming an exposed section. The exposed section may include a plurality of spirally-arranged transversal notches disposed along the optical fiber to enable light to escape the inner cladding upon impinging on the plurality of notches. A circumferential segment of the optical fiber may include a single notch of the plurality of notches. Each of the plurality of notches may have a depth of only a partial distance to the core.
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公开(公告)号：US10656334B2
公开(公告)日：2020-05-19
申请号：US16457018
申请日：2019-06-28
Applicant: Lumentum Operations LLC
Inventor： Martin H. Muendel , James J. Morehead , Vincent Petit , Richard D. Faulhaber
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 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：US10603744B2
公开(公告)日：2020-03-31
申请号：US16213616
申请日：2018-12-07
Applicant: Lumentum Operations LLC
Inventor： Changgeng Ye , Hongbo Yu , Martin H. Muendel
IPC: G02B6/26 , B23K26/035 , C03C25/105 , G02B6/28 , C03C25/12
Abstract: A method of manufacturing a side-coupling structure, associated with coupling an aiming beam from an aiming beam fiber into a laser beam fiber, may include removing a coating from a section of the laser beam fiber and removing a coating from a section of the aiming beam fiber. The method may further include bringing the section of the aiming beam fiber in physical contact with the section of the laser beam fiber in order to create the side-coupling structure. The method may further include recoating the section of the laser beam fiber and the section of the aiming beam fiber in order to coat the side-coupling structure.
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Patent Agency Ranking
公开(公告)号：US10305252B2
公开(公告)日：2019-05-28
申请号：US15510870
申请日：2015-10-08
Applicant: Lumentum Operations LLC , Amada Holdings Company LTD.
Inventor： Martin H. Muendel , Justin L. Franke , Joseph J. Alonis , Kaori Usuda , Minoru Ogata
IPC: H01S5/40 , H01S5/042 , H01S5/0683 , H01S5/00 , B23K26/70 , H01S3/131 , B23K26/06 , B23K26/08 , B23K26/362 , B23K26/38 , B23K26/064 , H01S5/022 , H01S5/024 , H01S5/06 , H01S5/14
Abstract: A power control method for a laser system comprising laser diodes arranged in diode banks is provided. Each diode bank comprises at least one of the laser diodes and has a maximum power. The method comprises operating a first diode bank of the diode banks to output a first power; and concurrently operating other of the diode banks to output other powers, at least one of the other powers being different than the first power.
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公开(公告)号：US10228607B2
公开(公告)日：2019-03-12
申请号：US15716159
申请日：2017-09-26
Applicant: Lumentum Operations LLC
Inventor： Martin H. Muendel , James J. Morehead
Abstract: A second harmonic generator may include a combiner to combine a fundamental optical beam with a residual fundamental optical beam. The second harmonic generator may include a second harmonic crystal, coupled to the combiner, to generate a second harmonic optical beam from the fundamental optical beam and the residual fundamental optical beam. Upon generation of the second harmonic optical beam, the residual fundamental optical beam may exit the second harmonic crystal.
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公开(公告)号：US20160231564A1
公开(公告)日：2016-08-11
申请号：US15003514
申请日：2016-01-21
Applicant: Lumentum Operations LLC
Inventor： Xiuquan Ma , Dmitriy Panasenko , Martin H. Muendel
CPC classification number: G02B27/0025 , G02B3/0087 , G02B6/25 , G02B6/255 , G02B13/0095 , G02B27/30
Abstract: An aberration corrector and a method to reducing a spherical aberration are disclosed. The aberration corrector has a radial, rotationally symmetric variation of refractive index including a term varying in proportion to a fourth degree of a distance from the optical axis. Since the spherical aberration causes a wavefront deviation proportional to the fourth degree of distance from the optical axis, the spherical aberration can be reduced by the aberration corrector when its thickness causes the exact amount of the phase delay corresponding to the wavefront deviation, but with an opposite sign.
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公开(公告)号：US09397464B2
公开(公告)日：2016-07-19
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：US09391425B2
公开(公告)日：2016-07-12
申请号：US14884440
申请日：2015-10-15
Applicant: Lumentum Operations LLC
Inventor： Martin H. Muendel , Xiuquan Ma
CPC classification number: H01S3/2391 , H01S3/08036 , H01S3/0805 , H01S3/08063 , H01S3/0811 , H01S5/141 , H01S5/4062 , H01S5/4068 , H01S5/4087
Abstract: A beam combiner may include source elements, each configured to output a beam of light locked at a center wavelength different from center wavelengths of other source elements. The beam combiner may include a dispersive element configured to combine the beams of light into a combined beam, and a beam separator configured to separate the combined beam into an output beam and a locking beam. The beam combiner may include a spatial filter configured to prevent crosstalk within the locking beam, and to redirect the locking beam to the source elements. The dispersive element may be configured to disperse the locking beam into constituent wavelength beams. Each constituent wavelength beam may be directed to a respective one of the source elements for locking that source element at its center wavelength, and may correspond in wavelength to the center wavelength of the respective source element.
Abstract translation: 光束组合器可以包括源元件，每个源元件被配置为输出锁定在不同于其它源元件的中心波长的中心波长的光束。 光束组合器可以包括被配置为将光束组合成组合光束的分散元件，以及被配置为将组合光束分离成输出光束和锁定光束的光束分离器。 光束组合器可以包括被配置为防止锁定光束内的串扰并且将锁定光束重定向到源元件的空间滤光器。 分散元件可以被配置为将锁定光束分散成组成的波长束。 每个构成波长光束可以被引导到源元件中的相应一个，用于将该源元件锁定在其中心波长处，并且可以在波长对应于相应源元件的中心波长。
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