公开(公告)号：US20240036255A1

公开(公告)日：2024-02-01

申请号：US17936114

申请日：2022-09-28

Applicant: Lumentum Operations LLC

Inventor： Ning LIU ,  Jeff GREGG ,  Gongwen ZHU ,  Xiang PENG ,  Guan SUN ,  Matthew KUTSURIS

IPC: G02B6/255 ,  H01S3/094 ,  G02B6/04

CPC classification number: G02B6/2552 ,  H01S3/094053 ,  G02B6/04

Abstract: A system may perform an uptapering process to cause a signal fiber to have a fiber core with a first uptapered thickness profile and a fiber cladding with a second uptapered thickness profile. The system may perform, after performing the uptapering process, an uptapering removal process to cause the fiber cladding of the signal fiber to not have the second uptapered thickness profile. The system may perform, after performing the uptapering removal process, a bundling process to bundle the signal fiber and a set of one or more pump fibers in a bundle configuration. The system may perform, after performing the bundling process, a bundle unification process to cause the bundle configuration to form a unified bundle configuration. The system may perform, after performing the bundle unification process, an attachment process to cause an end of the unified bundle configuration to attach to an end of an output fiber.

公开(公告)号：US20230318250A1

公开(公告)日：2023-10-05

申请号：US17809417

申请日：2022-06-28

Applicant: Lumentum Operations LLC

Inventor： Richard D. FAULHABER ,  Martin H. MUENDEL ,  Patrick GREGG ,  Ning LIU

IPC: H01S3/094 ,  H01S3/067 ,  H01S3/10 ,  H01S3/0941

CPC classification number: H01S3/094007 ,  H01S3/0675 ,  H01S3/10023 ,  H01S3/09415 ,  H01S3/06733

Abstract: In some implementations, a master oscillator power amplifier (MOPA) system may include one or more pump laser sources, a power amplifier, and a multicore oscillator that includes an input side coupled to the one or more pump laser sources and an output side coupled to the power amplifier. In some implementations, the multicore oscillator may include an active fiber, including an inner cladding, an outer cladding surrounding the inner cladding, and multiple active fiber cores, embedded in the inner cladding, to convert pump light into signal light. In some implementations, the multicore oscillator may include multiple first reflectors that are each configured to operate as a high reflector on the input side of the oscillator, and multiple second reflectors that are each configured to operate as an output coupler on the output side of the oscillator.

公开(公告)号：US20250123457A1

公开(公告)日：2025-04-17

申请号：US18392426

申请日：2023-12-21

Applicant: Lumentum Operations LLC

Inventor： Gongwen ZHU ,  Guan SUN ,  Ning LIU

IPC: G02B6/42 ,  G02B6/245 ,  H01S3/094 ,  H01S3/23

Abstract: In some implementations, an optical fiber combiner includes a glass tube. A stray light stripper may be defined at a surface of the glass tube. The stray light stripper may be defined by perturbations in the surface of the glass tube or a layer of a material, on the glass tube, having a different refractive index than a refractive index of the glass tube. The perturbations may be grooves, notches, or etches. The optical fiber combiner may include a fiber bundle, disposed within the glass tube, including a plurality of optical fibers.

公开(公告)号：US20240416451A1

公开(公告)日：2024-12-19

申请号：US18463936

申请日：2023-09-08

Applicant: Lumentum Operations LLC

Inventor： Richard D. FAULHABER ,  Ning LIU ,  Jeff GREGG ,  Guan SUN

IPC: B23K26/064 ,  B23K26/06 ,  H01S3/30

Abstract: In some implementations, an optical system comprises a laser engine that comprises multiple laser sources configured to generate multiple lasers associated with different wavelengths and a signal combiner configured to combine the multiple lasers associated with the different wavelengths into broadband laser light. In some implementations, the optical system may further comprise a process cable configured to transmit the broadband laser light and a process head configured to receive the broadband laser light via the process cable such that the process head may focus the broadband laser light onto a workpiece.

公开(公告)号：US20240347997A1

公开(公告)日：2024-10-17

申请号：US18330656

申请日：2023-06-07

Applicant: Lumentum Operations LLC

Inventor： Ning LIU ,  Guan SUN ,  Matthew KUTSURIS ,  Gongwen ZHU

IPC: H01S3/067 ,  H01S3/094 ,  H01S3/16 ,  H01S3/23

CPC classification number: H01S3/06733 ,  H01S3/0675 ,  H01S3/094007 ,  H01S3/1603 ,  H01S3/2308

Abstract: A master oscillator power amplifier system includes a seed laser oscillator and a master laser oscillator. The seed laser oscillator includes a first oscillator fiber with a first laser cavity configured to convert a first pump light into a first seed laser light in a fundamental mode as the first pump light interacts with a fiber core of the first oscillator fiber. The master laser oscillator includes a second oscillator fiber with second laser cavity configured to receive and convert the first seed laser light into a second seed laser light in the fundamental mode as the first seed laser light interacts with a fiber core of the second oscillator fiber, and receive and convert a second pump light into a primary laser light in the fundamental mode as the second pump light interacts with the fiber core of the second oscillator fiber.

公开(公告)号：US20240250493A1

公开(公告)日：2024-07-25

申请号：US18193195

申请日：2023-03-30

Applicant: Lumentum Operations LLC

Inventor： Gongwen ZHU ,  Matthew KUTSURIS ,  Guan SUN ,  Ning LIU

IPC: H01S3/094 ,  G02B6/42 ,  H01S3/0941 ,  H01S3/23

CPC classification number: H01S3/094053 ,  G02B6/4202 ,  G02B6/4262 ,  H01S3/094007 ,  H01S3/094011 ,  H01S3/09415 ,  H01S3/2308 ,  H01S3/067

Abstract: In some implementations, a pump-signal combiner may comprise a plurality of pump fibers configured to receive pump light and to transmit the pump light into a cladding of an output fiber and one or more signal fibers, surrounded by the plurality of pump fibers. In some implementations, the one or more signal fibers may each comprise an input section, coupled to the one or more first laser sources, having an input core diameter; an output section, coupled to the output fiber, having an output core diameter; a first tapered section, adjacent to the input section, in which a core diameter increases from the input core diameter to a maximum value; and a second tapered section, adjacent to the output section, in which a core diameter decreases from the maximum value to the output core diameter.

公开(公告)号：US20230246407A1

公开(公告)日：2023-08-03

申请号：US17657426

申请日：2022-03-31

Applicant: Lumentum Operations LLC

Inventor： Ning LIU ,  Xiang PENG

IPC: H01S3/08 ,  H01S3/067 ,  H01S3/30

CPC classification number: H01S3/08086 ,  H01S3/302 ,  H01S3/0675 ,  H01S3/06754

Abstract: In some implementations, a fiber amplifier system includes a fiber oscillator and a fiber amplifier coupled to an output end of the fiber oscillator. The fiber oscillator may include an active fiber having a first end and a second end, where the active fiber is to receive pump light from one or more optical sources; one or more high-reflectivity mirrors coupled to the first end of the active fiber; and multiple output coupler mirrors coupled to the second end of the active fiber. The one or more high-reflectivity mirrors and the multiple output coupler mirrors may form an optical cavity with the active fiber for generating laser light. The multiple output coupler mirrors may have respective center wavelengths that are different. The multiple output coupler mirrors may have respective reflection spectrums that are different.