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    OPTICAL AMPLIFIER SYSTEMS AND METHODS
    5.
    发明公开
    OPTICAL AMPLIFIER SYSTEMS AND METHODS 审中-公开

    公开(公告)号：US20240255830A1

    公开(公告)日：2024-08-01

    申请号：US18411183

    申请日：2024-01-12

    Applicant: University of Central Florida Research Foundation, Inc.

    Inventor： Konstantin Vodopyanov

    IPC: G02F1/39

    CPC classification number: G02F1/392

    Abstract: A system can include a beamsplitter configured to be in optical communication with an optical input source configured to generate one or more input optical signals. The beamsplitter can be configured to split the one or more input optical signals into one or more seed optical signals configured to propagate along a first optical path, and one or more pump optical signals configured to propagate along a second optical path. The system can include a frequency divider in optical communication with the beamsplitter to receive the one or more seed optical signals. The frequency divider can be configured to divide optical frequencies of the one or more seed optical signals in half to provide one or more subharmonic seed optical signals. The system can include a beam combiner in optical communication with the frequency divider to receive the one or more subharmonic seed optical signals, and with the beamsplitter to receive the one or more pump optical signals. The beam combiner can be configured to combine at least one of the one or more pump optical signals and at least one of the one or more subharmonic seed optical signals to provide a combined optical signal. The system can include a nonlinear material in optical communication with the beam combiner to receive the combined optical signal. The nonlinear material can be configured to provide optical parametric amplification of the at least one of the one or more subharmonic seed optical signals of the combined optical signal.

    Optical Parametric Oscillator System
    7.
    发明公开
    Optical Parametric Oscillator System 审中-公开

    公开(公告)号：US20240036435A1

    公开(公告)日：2024-02-01

    申请号：US18038668

    申请日：2021-11-26

    Applicant: Heriot-Watt University

    Inventor： John C. Travers ,  Federico Belli

    IPC: G02F1/39 ,  G02F1/35 ,  G02B6/02 ,  H01S3/094

    CPC classification number: G02F1/397 ,  G02F1/354 ,  G02F1/3538 ,  G02F1/392 ,  G02F1/395 ,  G02F1/3528 ,  G02B6/02328 ,  H01S3/094015 ,  H01S3/1083

    Abstract: An optical parametric oscillator (OPO) system comprises an optical waveguide including a hollow core containing a fluid, wherein the optical waveguide is configured to receive pump light and to convert the pump light into signal light and idler light via a third order non-linear optical effect. The OPO system further comprises an optical feedback arrangement for recycling at least a portion of the signal light and/or for recycling at least a portion of the idler light in an optical cavity that includes the optical waveguide. The OPO system may be used, in particular though not exclusively, in metrology, gas and solid-state spectroscopy, laser-assisted manufacturing, semiconductor technology, biomedicine, healthcare, and scientific laboratory use.

    Optical Amplifier
    8.
    发明公开
    Optical Amplifier 审中-公开

    公开(公告)号：US20230236473A1

    公开(公告)日：2023-07-27

    申请号：US18010899

    申请日：2020-07-29

    Applicant: Nippon Telegraph and Telephone Corporation

    Inventor： Takushi Kazama ,  Takeshi Umeki ,  Takahiro Kashiwazaki ,  Osamu Tadanaga ,  Koji Embutsu ,  Nobutatsu Koshobu ,  Asuka Inoue ,  Ryoichi Kasahara

    IPC: G02F1/39 ,  G02F1/35 ,  H01S3/108

    CPC classification number: G02F1/392 ,  G02F1/3501 ,  H01S3/1086

    Abstract: An optical amplifier of the present disclosure includes a Raman amplification unit and a parametric amplification unit that is configured of a second-order nonlinear element including a PPLN waveguide. In the optical amplifier, second harmonic lights are generated from a fundamental wave light having a wavelength that is slightly detuned to a shorter wavelength side with respect to a phase matching wavelength of the second-order nonlinear element, and is utilized as excitation light for the parametric amplification unit. By utilizing the excitation light based on the fundamental wave light of the wavelength detuned from the phase matching wavelength, a phase matching curve can be obtained in a wide band in a difference frequency generation (DFG) process of the second-order nonlinear element. The reduction in conversion efficiency of the wavelength near the excitation light in the parametric amplification unit is compensated by the Raman amplification unit.

    Wavelength Converter
    10.
    发明公开
    Wavelength Converter 审中-公开

    公开(公告)号：US20240241310A1

    公开(公告)日：2024-07-18

    申请号：US18558584

    申请日：2021-06-02

    Applicant: Nippon Telegraph and Telephone Corporation

    Inventor： Nobutatsu Koshobu ,  Koji Embutsu ,  Takeshi Umeki ,  Osamu Tadanaga ,  Takushi Kazama ,  Takahiro Kashiwazaki ,  Asuka Inoue ,  Kei Watanabe

    IPC: G02B6/122 ,  G02F1/39

    CPC classification number: G02B6/1223 ,  G02F1/392

    Abstract: A module structure that makes it easy to mount pigtail optical fibers by mounting a wavelength conversion apparatus, to enable adjustment of the path distance of optical signals, or to control the path distance of each individual polarization for polarization diversity control with high precision. The wavelength conversion apparatus is characterized in that when mounting a module having two or more input and output ports of a wavelength conversion apparatus, the module is configured to take out the input and output ports from two corresponding walls of the mounting housing, and also has a mechanism to control the path distance of at least one of the signal light and the excitation light input from each input and output port, and has a mechanism to separate the polarization of at least one of the signal light and the excitation light input from the ports and to control the path distance.

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