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    Wavelength division multiplexer
    103.
    发明授权
    Wavelength division multiplexer 有权

    公开(公告)号：US11353666B2

    公开(公告)日：2022-06-07

    申请号：US16441775

    申请日：2019-06-14

    Applicant: Acacia Communications, Inc.

    Inventor： Long Chen ,  Christopher Doerr ,  Li Chen

    IPC: G02B6/293 ,  G02B6/12 ,  G02B6/42

    Abstract: An integrated wavelength division multiplexer is described. The integrated wavelength division multiplexer may include a first waveguide core defining a first propagation axis and configured to guide light of a first wavelength and light of a second wavelength, and a second waveguide core defining a second propagation axis and configured to guide the light of the second wavelength. A first portion of the second propagation axis for which the first waveguide core and second waveguide core may be overlapping is oriented at a non-zero angle relative to the first propagation axis. The first waveguide core and second waveguide core may be configured relative to each other to adiabatically couple the light of the second wavelength between the first and second waveguide cores.

    LiDAR sensor with orthogonal arrays
    104.
    发明授权
    LiDAR sensor with orthogonal arrays 有权

    公开(公告)号：US11294061B1

    公开(公告)日：2022-04-05

    申请号：US16104872

    申请日：2018-08-17

    Applicant: Acacia Communications, Inc.

    Inventor： Christopher Doerr ,  Long Chen

    IPC: G01S17/89 ,  G01S7/481 ,  G01S17/10 ,  G01S17/42 ,  H01S5/00

    Abstract: An apparatus for scanning a scene comprising a light transmitter including a one-dimensional phased array; wherein the light transmitter is fed by a frequency swept scanning laser; and a light receiver including a one-dimensional phased array; the one-dimensional phased array of the light receiver disposed orthogonally to the one-dimensional phased array of the transmitter; wherein light received by the light receiver is enabled to be interfered with light from the frequency swept scanning laser.

    ERBIUM DOPED FIBER ISOLATOR COMPONENTS
    105.
    发明申请
    ERBIUM DOPED FIBER ISOLATOR COMPONENTS 有权

    公开(公告)号：US20220069535A1

    公开(公告)日：2022-03-03

    申请号：US17186638

    申请日：2021-02-26

    Applicant: Acacia Communications, Inc.

    Inventor： Colm V. Cryan

    IPC: H01S3/00 ,  H01S3/067 ,  H01S3/16

    Abstract: A system including an erbium doped fiber amplifier (EDFA), comprising a length of erbium doped fiber having a first end and a second end, an isolator wavelength division multiplexer (IWDM) comprising an output optically connected at an optical connection with the first end of the erbium doped fiber, wherein the optical connection with the first end of the erbium doped fiber is continuous between the IWDM and the first end of the erbium doped fiber, and an isolator comprising an input optically connected at an optical connection with the second end of the erbium doped fiber.

    Flexible baud rate
    106.
    发明授权
    Flexible baud rate 有权

    公开(公告)号：US11265084B2

    公开(公告)日：2022-03-01

    申请号：US16544282

    申请日：2019-08-19

    Applicant: Acacia Communications, Inc.

    Inventor： Jonas Geyer

    IPC: H04B10/61 ,  H04B10/516

    Abstract: A method, system, and apparatus enabled to selectively choose a baud rate for communication of optical data using a modem enabled to operate with an optical signal modulated at plurality of finely tuned baud rates.

    Coherent receiver array
    108.
    发明授权
    Coherent receiver array 有权

    公开(公告)号：US11187517B2

    公开(公告)日：2021-11-30

    申请号：US16441576

    申请日：2019-06-14

    Applicant: Acacia Communications, Inc.

    Inventor： Christopher Doerr

    IPC: G01B9/02 ,  G01S7/4863 ,  G01S17/89 ,  G01S7/481

    Abstract: Optical coherent receiver arrays are described. The optical coherent receiver arrays include an integrated array of photodetectors separated by integrated mirrors which may cause interference of received free space optical and local oscillator signals. The mirrors may serve as splitters, helping to align the received signal and local oscillator to cause interference. The photodetectors of the optical coherent receiver array may be electrically coupled in various manners to read out the signals. The optical coherent receiver array may be implemented in an optical coherence tomography (OCT) imaging system in some embodiments.

    Fault localization and fiber security in optical transponders
    109.
    发明授权
    Fault localization and fiber security in optical transponders 有权

    公开(公告)号：US11171728B2

    公开(公告)日：2021-11-09

    申请号：US15613038

    申请日：2017-06-02

    Applicant: Acacia Communications, Inc.

    Inventor： Eric Swanson ,  Graeme Pendock

    IPC: H04B10/00 ,  H04B10/85 ,  H04L12/26 ,  H04L12/24

    Abstract: Designs, methods, and applications for fault localization and fiber security in optical transponders is described. In one embodiment a two-way time transfer protocol or other suitable method for synchronizing clocks between distant transponders is used. The clock synchronized transponders have digital signal processing to continually detect high precision time-histories of physical layer attributes in the transmission between the two transponders. Physical layer attributes can include: state-of-polarization changes, changes in polarization-mode-dispersion, change in propagation delay, changes or loss-of-light, changes in OSNR, changes in BER between the two nodes. By recording these physical layer changes and time-stamping them information on the magnitude and estimated location of the changes can be inferred by from the time records. In one aspect the method may be used in a distributed optical sensor for monitoring trespassing events that are a risk to fiber security of an optical transmission link.

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