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    Split optical front end receivers
    32.
    发明授权
    Split optical front end receivers 有权

    公开(公告)号：US10797801B2

    公开(公告)日：2020-10-06

    申请号：US16157946

    申请日：2018-10-11

    Applicant: Finisar Corporation

    Inventor： Gilles P. Denoyer ,  Dennis Pu ,  Homero Guimaraes ,  Faraz Monifi ,  Bryan Park ,  Daniel Mahgerefteh

    IPC: H04B10/69 ,  H04B10/67

    Abstract: An optical receiver with improved dynamic range may include at least one directional coupler having at least one input configured to couple to an optical fiber. The optical receiver may include a first signal path including a first photodetector coupled to an output of the at least one directional coupler, a first transimpedance amplifier (TIA) including an input coupled to the first photodetector, and an adder coupled to an output of the first TIA. The optical receiver may include a second signal path including a second photodetector coupled to an output of the at least one directional coupler, a second TIA including an input coupled to the second photodetector, and the adder coupled to an output of the second TIA. Further, the optical receiver may include an optical power sensing circuit coupled to at least one of the first TIA, the second TIA, and the adder.

    Surface coupled laser and laser optical interposer
    33.
    发明授权
    Surface coupled laser and laser optical interposer 有权

    公开(公告)号：US10663680B2

    公开(公告)日：2020-05-26

    申请号：US16438414

    申请日：2019-06-11

    Applicant: Finisar Corporation

    Inventor： Daniel Mahgerefteh ,  Jin-Hyoung Lee ,  Shiyun Lin

    IPC: G02B6/42 ,  G02B6/12 ,  G02B6/122 ,  G02B6/34 ,  H01S5/022 ,  G02B6/124 ,  H01S5/00 ,  H01S5/187

    Abstract: An example system includes a grating coupled laser, a laser optical interposer (LOI), an optical isolator, and a light redirector. The grating coupled laser includes a laser cavity and a transmit grating optically coupled to the laser cavity. The transmit grating is configured to diffract light emitted by the laser cavity out of the grating coupled laser. The LOI includes an LOI waveguide with an input end and an output end. The optical isolator is positioned between the surface coupled edge emitting laser and the LOI. The light redirector is positioned to redirect the light, after the light passes through the optical isolator, into the LOI waveguide of the LOI.

    Optically enabled multi-chip modules including optical engine macros
    34.
    发明授权
    Optically enabled multi-chip modules including optical engine macros 有权

    公开(公告)号：US10594402B2

    公开(公告)日：2020-03-17

    申请号：US15369770

    申请日：2016-12-05

    Applicant: FINISAR CORPORATION

    Inventor： Frank J. Flens ,  Daniel Mahgerefteh ,  The' Linh Nguyen ,  Jimmy Alan Tatum

    IPC: H04B10/40 ,  H04B10/80 ,  H04B10/50

    Abstract: An optically enabled multi-chip module has an optical engine transceiver and a host system chip. The optical engine transceiver has an optical engine front-end and an optical engine macro. The optical engine front-end has multiple laser diodes, laser driver circuitry electrically interfaced with each of the laser diodes, multiple photodiodes, amplifier circuitry electrically interfaced with each of the photodiodes, and at least one optical element optically positioned between the laser diodes and at least one optical fiber and between the photodiodes and the at least one optical fiber. The at least one optical element optically interfaces the laser diodes and photodiodes with the optical fiber. The optical engine macro is both electrically interfaced with and physically segregated from the optical engine front-end. The optical engine macro provides a subset of optical transceiver functionality to the optical engine front-end. The host system chip is electrically interfaced with the optical engine transceiver.

    POLARIZATION INDEPENDENT MULTIPLEXER / DEMULTIPLEXER
    35.
    发明申请
    POLARIZATION INDEPENDENT MULTIPLEXER / DEMULTIPLEXER 审中-公开

    公开(公告)号：US20190302364A1

    公开(公告)日：2019-10-03

    申请号：US16379660

    申请日：2019-04-09

    Applicant: FINISAR CORPORATION

    Inventor： Daniel Mahgerefteh ,  Jared Mikkelsen

    IPC: G02B6/12 ,  G02B6/293 ,  G02B6/126 ,  G02B6/124 ,  G02B6/10

    Abstract: An integrated optical component includes at least one input waveguide, at least one output waveguide; a first slab waveguide having a first refractive index, n1. The first slab waveguide may be disposed between at least one of the input waveguides and at least one of the output waveguides. The integrated optical component may further include a second slab waveguide having a second refractive index, n2. The integrated optical component may also include a third cladding slab having a third refractive index, n3. The third cladding slab may be disposed between the first slab and the second slab. The thickness of the second slab waveguide and the thickness of the third slab waveguide are adjustable to reduce a birefringence of the integrated optical component.

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