公开(公告)号：US20250062586A1

公开(公告)日：2025-02-20

申请号：US18721332

申请日：2022-03-15

Applicant: NEC Corporation

Inventor： Takeshi TAKEUCHI ,  Satoshi Mikami

IPC: H01S3/10 ,  H01S3/067 ,  H01S3/094 ,  H04J14/02

Abstract: An optical amplification system includes: an optical mixer which combined first light, second light, third light, and fourth light, then branches the combined lights, and outputs first combined light, second combined light, third combined light, and fourth combined light; a first brancher that branches the first combined light and outputs first excitation light and second excitation light; a second brancher that branches the second combined light and outputs third excitation light and fourth excitation light; a third brancher that branches the third combined light and outputs fifth excitation light and sixth excitation light; and a fourth brancher that branches the fourth combined light and outputs seventh excitation light and eighth excitation light.

公开(公告)号：US20250020861A1

公开(公告)日：2025-01-16

申请号：US18499062

申请日：2023-10-31

Applicant: Lumentum Operations LLC

Inventor： Richard D. FAULHABER ,  Patrick GREGG ,  Jeff GREGG

IPC: G02B6/04 ,  G02B6/02 ,  H01S3/094

Abstract: An optical pump-signal combiner includes a first end and a second end. The optical pump-signal combiner is tapered down from the first end to the second end. At a first cross-section of the optical pump-signal combiner associated with the first end, the optical pump-signal combiner includes a capillary, a plurality of signal fibers that are disposed within the capillary, and a plurality of pump fibers that surround the capillary. Each signal fiber, of the plurality of signal fibers, includes a signal core and a signal cladding, and each pump fiber, of the plurality of pump fibers, includes a pump core and a pump cladding. At a second cross-section of the optical pump-signal combiner associated with the second end, the optical pump-signal combiner includes a unified fiber that includes an outer combined-cladding, a combined-pump core, an inner combined-cladding, and a combined-signal core.

公开(公告)号：US12199400B2

公开(公告)日：2025-01-14

申请号：US17194852

申请日：2021-03-08

Applicant: Raytheon Company

Inventor： Fabio Di Teodoro ,  David A. Rockwell

IPC: H01S3/23 ,  H01S3/067 ,  H01S3/094 ,  H01S3/16 ,  H01S3/30

Abstract: A system includes a signal seeder configured to generate a pulsed seed signal, where the signal seeder includes a master oscillator configured to generate an optical signal at a first wavelength. The system also includes a series of optical preamplifiers collectively configured to amplify the pulsed seed signal and generate an amplified signal. The system further includes a Raman fiber amplifier configured to amplify the amplified signal and generate a Raman-shifted amplified signal. The Raman fiber amplifier is configured to shift a wavelength of the amplified signal to a second wavelength different than the first wavelength during generation of the Raman-shifted amplified signal.

公开(公告)号：US12197104B2

公开(公告)日：2025-01-14

申请号：US18062883

申请日：2022-12-07

Applicant: International Business Machines Corporation

Inventor： Abram L Falk ,  Chi Xiong ,  Ryan Daniel Schilling ,  Jason S. Orcutt

IPC: G02F1/365 ,  G02F1/35 ,  G02F1/355 ,  H01S3/094 ,  H04B10/70 ,  G06N10/00

Abstract: Devices and/or methods provided herein relate to providing conversion of photons between an optical domain and a microwave domain. An electronic structure can comprise a resonator assembly comprising a microwave resonator and an optical resonator, an optical pump waveguide that transmits an optical pump input to the resonator assembly, and an optical signal waveguide, separate from the optical pump waveguide, that transmits an optical signal relative to the resonator assembly. The electronic structure further can comprise a microwave signal waveguide that transmits a microwave signal relative to the resonator assembly. The optical pump waveguide can comprise a delay portion that delays receipt of the optical pump input to the resonator assembly through the optical pump waveguide to a time after reduction of a majority of decoherence of the resonator assembly caused by scattering of a portion of the optical pump input, which portion does not enter the optical pump waveguide.

公开(公告)号：US20250007232A1

公开(公告)日：2025-01-02

申请号：US18291637

申请日：2022-03-18

Applicant: HAMAMATSU PHOTONICS K.K.

Inventor： Masaru SHIMOMAKI ,  Shin KATO ,  Shinichi OHBA ,  Keita UMENO

IPC: H01S3/067 ,  H01S3/094 ,  H01S3/1118

Abstract: A fiber laser device includes: a housing; a first optical element configured to include a first fiber and a first fiber connector; a second optical element configured to include a second fiber and a second fiber connector; and a movable holder configured to hold the second fiber connector and be movable so that an orientation of the second fiber connector changes between a first orientation and a second orientation. The first optical element and the second optical element are optically connectable via the first fiber connector and the second fiber connector, a first opening is formed in a wall portion of the housing, the first orientation is an orientation when the first optical element and the second optical element are optically connected, and the second orientation is an orientation in which an end surface of the second fiber is exposed through the first opening.

公开(公告)号：US12176200B2

公开(公告)日：2024-12-24

申请号：US18663177

申请日：2024-05-14

Applicant: Hamamatsu Photonics K.K. ,  Energetiq Technology, Inc.

Inventor： Matthew Partlow ,  Donald K. Smith ,  Matthew Besen ,  Akinori Asai

IPC: H01J65/00 ,  H01J61/16 ,  H01J61/54 ,  H01J65/04 ,  H01S3/06 ,  H01S3/091 ,  H01S3/094 ,  H01S3/1115 ,  H01S3/16 ,  H01S3/13

Abstract: An electrodeless laser-driven light source includes a laser that generates a CW sustaining light. A pump laser generates pump light. A Q-switched laser crystal receives the pump light generated by the pump laser and generates pulsed laser light at an output in response to the generated pump light. A first optical element projects the pulsed laser light along a first axis to a breakdown region in a gas-filled bulb comprising an ionizing gas. A second optical element projects the CW sustaining light along a second axis to a CW plasma region in the gas-filled bulb comprising the ionizing gas. A detector detects plasma light generated by a CW plasma and generates a detection signal at an output. A controller generates control signals that control the pump light to the Q-switched laser crystal so as to extinguish the pulsed laser light within a time delay after the detection signal exceeds a threshold level.

公开(公告)号：US20240413609A1

公开(公告)日：2024-12-12

申请号：US18697112

申请日：2022-09-28

Applicant: University of Southampton

Inventor： Peter George Robin SMITH ,  Rex Hugh Seton BANNERMAN ,  Devin Hugh SMITH

IPC: H01S5/14 ,  H01S3/067 ,  H01S3/094 ,  H01S3/0941 ,  H01S3/102 ,  H01S3/137 ,  H01S3/30

Abstract: An optical source comprises: a pump source operable to generate laser light at a first wavelength; a single mode optical fibre arranged to receive laser light at the first wavelength from the pump source, the optical fibre being fabricated from material having a Raman gain profile for stimulated Raman scattering of light at the first wavelength, and a Brillouin gain profile for stimulated Brillouin scattering of light at the second wavelength to a third wavelength longer than the second wavelength; and a superstructured fibre Bragg grating formed in the optical fibre, the grating comprising: a periodic refractive index profile along a core of the optical fibre, giving transmission of the first wavelength to allow received laser light at the first wavelength to enter the superstructured fibre Bragg grating, reflection of the second wavelength at a first level, and reflection of the third wavelength at a second level lower than the first level; and a phase shift at an intermediate location along a length of the grating; wherein the series of pulses at the third wavelength comprise a pulsed output of the optical source.

公开(公告)号：US12149039B2

公开(公告)日：2024-11-19

申请号：US17264824

申请日：2019-08-29

Applicant: OFS Fitel, LLC

Inventor： Benyuan Zhu

IPC: H01S3/067 ,  H01S3/094 ,  H01S3/16 ,  H01S3/30

Abstract: A fiber amplifier that is particularly configured to provide gain across a large extent of the C-band spectral range (i.e., a gain bandwidth of at least 42 nm, preferably within the range of 46-48 nm) utilizes a specially-designed discrete Raman amplifier in combination with a high inversion level EDFA to extend the gain bandwidth of a conventional EDFA C-band optical amplifier, while maintaining the gain ripple below an acceptable value. The EDFA provides operation at a highly-inverted level and the specialized discrete Raman amplifier (sDRA) element has particular parameters (dispersion, length, effective area) selected to maintain operation within a “small gain” regime while also extending the long wavelength edge of the gain bandwidth and reducing the gain ripple attributed to the EDFA component.

公开(公告)号：US12142889B2

公开(公告)日：2024-11-12

申请号：US17419510

申请日：2019-12-31

Applicant: nLIGHT, Inc.

Inventor： C. Geoffrey Fanning ,  Jay Small ,  Dahv A. V. Kliner ,  Chris A. Rivera

IPC: H01S3/30 ,  H01S3/067 ,  H01S3/08 ,  H01S3/094

Abstract: Apparatus include a first optical fiber including a core situated to propagate a signal beam at a signal wavelength and an unwanted stimulated Raman scattering (SRS) beam at an SRS wavelength associated with the signal wavelength, and a fiber Bragg grating (FBG) situated in a core of a second optical fiber optically coupled to the core of the first optical fiber, the FBG having a selected grating reflectivity associated with the SRS wavelength and being situated to reflect the SRS beam back along the core of the second optical fiber and to reduce a damage associated with propagation of the SRS beam to power sensitive laser system components optically coupled to the second optical fiber. Methods are also disclosed.

公开(公告)号：US20240356298A1

公开(公告)日：2024-10-24

申请号：US18235543

申请日：2023-08-18

Applicant: ANHUI GUOSHENG QUANTUM TECHNOLOGY CO., LTD.

Inventor： Bowen ZHAO ,  Shaochun ZHANG ,  Long ZHAO ,  Rujia QIU ,  Xin WANG ,  Yu WANG ,  Haitao YANG ,  Hui LIU ,  Jiaqi GENG

IPC: H01S3/094 ,  B82Y20/00 ,  G02B6/42

CPC classification number: H01S3/094011 ,  H01S3/094038 ,  H01S3/094057 ,  B82Y20/00 ,  G02B6/4296

Abstract: Provided is a quantum current transformer based on a bidirectional light compensation technology, including an annular cavity, a plurality of quantum probes, a front-end laser source, a back-end laser source, and a quantum processing system. The plurality of quantum probes are installed in the annular cavity and distributed in a circumference, the plurality of quantum probes are sequentially connected in series through an excitation optical fiber, and two quantum probes at both ends of a series light path are respectively connected to the front-end laser source and the back-end laser source outside the annular cavity through excitation optical fibers. The quantum processing system is connected to the plurality of quantum probes through a plurality of collection optical fibers.