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    ADIABATICALLY COUPLED OPTICAL SYSTEM
    41.
    发明申请
    ADIABATICALLY COUPLED OPTICAL SYSTEM 审中-公开

    公开(公告)号：US20170329081A1

    公开(公告)日：2017-11-16

    申请号：US15596958

    申请日：2017-05-16

    Applicant: Finisar Corporation

    Inventor： Daniel Mahgerefteh ,  Bryan Park

    IPC: G02B6/125 ,  G02B6/122 ,  G02B6/12

    CPC classification number: G02B6/125 ,  G02B6/1228 ,  G02B6/305 ,  G02B2006/12061 ,  G02B2006/1209

    Abstract: An optical system includes a silicon (Si) substrate, a buried oxide (BOX) layer formed on the substrate, a silicon nitride (SiN) layer formed above the BOX layer, and a SiN waveguide formed in the SiN layer. In some embodiments, the optical system may additionally include an interposer waveguide adiabatically coupled to the SiN waveguide to form a SiN-interposer adiabatic coupler that includes at least the tapered section of the SiN waveguide, the optical system further including at least one of: a cavity formed in the Si substrate at least beneath the SiN-interposer adiabatic coupler or an oxide overlay formed between a top of a SiN core of the SiN waveguide and a bottom of the interposer waveguide. Alternatively or additionally, the optical system may additionally include a multimode Si—SiN adiabatic coupler that includes a SiN taper of a SiN waveguide and a Si taper of a Si waveguide.

    OPTICALLY ENABLED MULTI-CHIP MODULES
    42.
    发明申请
    OPTICALLY ENABLED MULTI-CHIP MODULES 审中-公开

    公开(公告)号：US20170237496A1

    公开(公告)日：2017-08-17

    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 ,  H04B10/50 ,  H04B10/80

    CPC classification number: H04B10/40 ,  H04B10/502 ,  H04B10/801

    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.

    BANDWIDTH EFFICIENT DUAL CARRIER
    46.
    发明申请
    BANDWIDTH EFFICIENT DUAL CARRIER 有权
    带宽效率双载波

    公开(公告)号：US20150215047A1

    公开(公告)日：2015-07-30

    申请号：US14617782

    申请日：2015-02-09

    Applicant: FINISAR CORPORATION

    Inventor： Ilya Lyubomirsky ,  Yasuhiro Matsui ,  Daniel Mahgerefteh

    IPC: H04B10/532

    CPC classification number: H04B10/532 ,  H04J14/06

    Abstract: In some examples, a transmit assembly is described that may include a first optical transmitter, a second optical transmitter, and a polarizing beam combiner. The first optical transmitter may be configured to emit a first optical data signal centered at a first frequency. The second optical transmitter may be configured to emit a second optical data signal centered at a second frequency offset from the first frequency by a nominal offset n. The polarizing beam combiner may be configured to generate a dual carrier optical data signal by polarization interleaving the first optical data signal with the second optical data signal. An output of the polarizing beam combiner may be configured to be communicatively coupled via an optical transmission medium to a polarization-insensitive receive assembly.

    Abstract translation: 在一些示例中，描述了可以包括第一光发射器，第二光发射器和偏振光束组合器的发射组件。 第一光发射器可以被配置为发射以第一频率为中心的第一光学数据信号。 第二光发射机可以被配置为以第一频率偏移标称偏移n发射以第二频率偏移为中心的第二光数据信号。 偏振光束组合器可以被配置为通过利用第二光学数据信号对第一光学数据信号进行极化交织来产生双载波光学数据信号。 偏振光束组合器的输出可以被配置为经由光传输介质通信耦合到偏振不敏感的接收组件。

    Wafer level testing of optical components
    47.
    发明授权
    Wafer level testing of optical components 有权

    公开(公告)号：US11295994B2

    公开(公告)日：2022-04-05

    申请号：US16517404

    申请日：2019-07-19

    Applicant: FINISAR CORPORATION

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

    IPC: H01L21/66 ,  G02B6/42 ,  G01R31/28 ,  G02B6/13 ,  G01R31/311 ,  G02B1/11

    Abstract: A system may include a wafer that includes ICs and defines cavities. Each cavity may be formed in a BEOL layer of the wafer and proximate a different IC. The system may also include an interposer that includes a transparent layer configured to permit optical signals to pass through. The interposer may also include at least one waveguide located proximate the transparent layer. The at least one waveguide may be configured to adiabatically couple at least one optical signal out of the multiple ICs. Further, the interposer may include a redirecting element optically coupled to the at least one the waveguide. The redirecting element may be located proximate the transparent layer and may be configured to receive the at least one optical signal from the at least one waveguide. The redirecting element may also be configured to vertically redirect the at least one optical signal towards the transparent layer.

    Polarization independent multiplexer / demultiplexer
    48.
    发明授权
    Polarization independent multiplexer / demultiplexer 有权

    公开(公告)号：US10996394B2

    公开(公告)日：2021-05-04

    申请号：US16379660

    申请日：2019-04-09

    Applicant: FINISAR CORPORATION

    Inventor： Daniel Mahgerefteh ,  Jared Mikkelsen

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

    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.

    Echelle grating demux/mux in SiN
    49.
    发明授权
    Echelle grating demux/mux in SiN 有权

    公开(公告)号：US10663659B2

    公开(公告)日：2020-05-26

    申请号：US16438425

    申请日：2019-06-11

    Applicant: Finisar Corporation

    Inventor： Daniel Mahgerefteh

    IPC: G02B6/12 ,  G02B6/293 ,  G02B5/18 ,  G01J3/18 ,  G01J3/02 ,  G02B6/124

    Abstract: In an example, an Echelle grating wavelength division multiplexing (WDM) device includes a first waveguide, a slab waveguide, multiple second waveguides, an Echelle grating, and a metal-filled trench. The first waveguide includes either an input waveguide or an output waveguide. The multiple second waveguides are optically coupled to the first waveguide through the slab waveguide. The multiple second waveguides include multiple output waveguides if the first waveguide includes the input waveguide or multiple input waveguides if the first waveguide includes the output waveguide. The Echelle grating includes multiple grating teeth formed in the slab waveguide. The metal-filled trench forms a mirror at the grating teeth to reflect incident light from the first waveguide toward the multiple second waveguides or from the multiple second waveguides toward the first waveguide.

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