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22 条记录 (耗时 0.015 秒)

    PHOTONIC INTEGRATED CIRCUIT-BASED COHERENTLY PHASED ARRAY LASER TRANSMITTER
    1.
    发明申请
    PHOTONIC INTEGRATED CIRCUIT-BASED COHERENTLY PHASED ARRAY LASER TRANSMITTER 有权

    公开(公告)号：US20220244578A1

    公开(公告)日：2022-08-04

    申请号：US17162860

    申请日：2021-01-29

    申请人： Raytheon Company ,  Raytheon Company

    发明人： Stephen P. Palese ,  Avram Bar-Cohen

    IPC分类号： G02F1/01 ,  H01S5/40 ,  H01S5/024 ,  G01J1/42 ,  H01S5/04

    摘要： An apparatus includes a photonic integrated circuit, which includes at least one splitter configured to split at least one input beam into multiple input beamlets and multiple phase modulators configured to phase-shift at least some of the input beamlets. The apparatus also includes an array of optical amplifiers configured to amplify the phase-shifted input beamlets and generate amplified beamlets. The apparatus further incudes a beam combiner configured to combine the amplified beamlets and generate an output beam. In addition, the apparatus includes a controller configured to control the phase modulators in order to adjust phasing of the phase-shifted input beamlets.

    PHOTONIC INTEGRATED CIRCUIT-BASED OPTICAL PHASED ARRAY CALIBRATION TECHNIQUE
    3.
    发明申请
    PHOTONIC INTEGRATED CIRCUIT-BASED OPTICAL PHASED ARRAY CALIBRATION TECHNIQUE 有权

    公开(公告)号：US20220252908A1

    公开(公告)日：2022-08-11

    申请号：US17174197

    申请日：2021-02-11

    申请人： Raytheon Company

    发明人： Niraj K. Inamdar ,  Stephen P. Palese ,  Aaron B. Potter ,  Thomas R. Yengst

    IPC分类号： G02F1/01 ,  G01N21/88

    摘要： A method includes generating a mixed optical beam using an optical phased array that includes multiple array elements, where each array element includes an antenna element and a phase modulator. The mixed optical beam includes a combination of (i) an output optical beam produced by the optical phased array and (ii) a reference optical beam. The method also includes capturing near-field measurements of the mixed optical beam, where the near-field measurements are captured while scanning phase angles of the phase modulators. The method further includes generating calibration data based on the near-field measurements, where the calibration data identifies phase and amplitude responses of the array elements. In addition, the method includes storing the calibration data.

    Photonic integrated circuit with inverted H-tree unit cell design
    5.
    发明授权
    Photonic integrated circuit with inverted H-tree unit cell design 有权

    公开(公告)号：US11894873B2

    公开(公告)日：2024-02-06

    申请号：US17809608

    申请日：2022-06-29

    申请人： Raytheon Company

    发明人： Stephen P. Palese ,  Richard L. Kendrick ,  Moe D. Soltani

    IPC分类号： H04B10/11 ,  H04B10/43

    CPC分类号： H04B10/11 ,  H04B10/43

    摘要： An apparatus includes a photonic integrated circuit having an optical phased array, where the optical phased array includes multiple unit cells. Each unit cell includes multiple antenna elements configured to transmit or receive optical signals, where a first subset of the antenna elements is oriented in a first direction and a second subset of the antenna elements is oriented in a second direction opposite the first direction. Each unit cell also includes multiple signal pathways configured to transport the optical signals to or from the antenna elements, where at least some of the signal pathways have an “H” configuration. Each unit cell further includes multiple phase modulators configured to modify phases of the optical signals being transported through the signal pathways.

    PHOTONIC INTEGRATED CIRCUIT MULTI-WAVELENGTH PHASE MODULATOR NETWORKS
    6.
    发明公开
    PHOTONIC INTEGRATED CIRCUIT MULTI-WAVELENGTH PHASE MODULATOR NETWORKS 审中-公开

    公开(公告)号：US20230400628A1

    公开(公告)日：2023-12-14

    申请号：US17806873

    申请日：2022-06-14

    申请人： Raytheon Company

    发明人： Stephen P. Palese

    IPC分类号： G02B6/12

    CPC分类号： G02B6/12004 ,  G02B6/12014 ,  G02B2006/12035

    摘要： An apparatus includes a photonic integrated circuit having an optical phased array, where the optical phased array includes multiple unit cells. Each unit cell includes at least one antenna element configured to transmit or receive multiple optical signals having spectrally-distinct wavelengths or wavelength ranges. Each unit cell also includes at least one signal pathway configured to transport the optical signals to or from the at least one antenna element. Each unit cell further includes a phase modulator configured to modify phases of the optical signals being transported through the at least one signal pathway. Each unit cell is configured to provide correlated phase shifts to the optical signals having the spectrally-distinct wavelengths or wavelength ranges.

    PHOTONIC INTEGRATED CIRCUIT-BASED TRANSMISSIVE/REFLECTIVE WAVEFRONT OPTICAL PHASE CONTROL
    7.
    发明公开
    PHOTONIC INTEGRATED CIRCUIT-BASED TRANSMISSIVE/REFLECTIVE WAVEFRONT OPTICAL PHASE CONTROL 审中-公开

    公开(公告)号：US20230367063A1

    公开(公告)日：2023-11-16

    申请号：US17662797

    申请日：2022-05-10

    申请人： Raytheon Company

    发明人： Stephen P. Palese

    IPC分类号： G02B6/12

    CPC分类号： G02B6/12004 ,  G02B2006/12142

    摘要： An apparatus includes a photonic integrated circuit having multiple cells. Each cell includes first and second antenna elements, where the first antenna element is configured to receive a portion of optical energy and the second antenna element is configured to transmit the portion of the optical energy. Each cell also includes a signal pathway configured to transport the portion of the optical energy between the first and second antenna elements. Each cell further includes a phase modulator configured to adjust a phase of the portion of the optical energy transported over the signal pathway. The apparatus also includes multiple wavefront sensors configured to measure wavefront errors in the portions of the optical energy. The apparatus further includes multiple phase controllers configured to adjust operation of the phase modulators in order to at least partially reduce the wavefront errors.