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    Wafer level testing of optical components
    1.
    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.

    Adiabatic polarization rotator-splitter
    5.
    发明授权
    Adiabatic polarization rotator-splitter 有权

    公开(公告)号：US11119275B2

    公开(公告)日：2021-09-14

    申请号：US16697037

    申请日：2019-11-26

    Applicant: FINISAR CORPORATION

    Inventor： Bryan Park ,  Zheng Yong ,  Joyce Kai See Poon

    IPC: G02B6/12 ,  G02B6/02 ,  G02B6/126 ,  G02B6/122 ,  G02B6/125 ,  G02B6/27 ,  G02B6/293 ,  G02B6/14

    Abstract: Various polarization rotator splitter (PRS) configurations are disclosed. In an example embodiment, a system includes a PRS that includes a silicon nitride (SiN) rib waveguide core that includes a rib and a ridge that extends vertically above the rib, the SiN rib waveguide core having a total height hSiN from a bottom of the rib to a top of the ridge, a rib height hrib from the bottom of the rib to a top of the rib, a rib width wrib, and a top width wSiN of the ridge. The rib width wrib varies along at least a portion of a length of the SiN rib waveguide core.

    Adiabatically coupled optical system
    6.
    发明授权
    Adiabatically coupled optical system 有权

    公开(公告)号：US10571630B2

    公开(公告)日：2020-02-25

    申请号：US16195804

    申请日：2018-11-19

    Applicant: FINISAR CORPORATION

    Inventor： Daniel Mahgerefteh ,  Bryan Park

    IPC: G02B6/122 ,  G02B6/27 ,  G02B6/125 ,  G02B6/30 ,  G02B6/12

    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.

    Adiabatic polarization rotator combiner
    7.
    发明授权
    Adiabatic polarization rotator combiner 有权

    公开(公告)号：US10401566B2

    公开(公告)日：2019-09-03

    申请号：US15826673

    申请日：2017-11-29

    Applicant: Finisar Corporation

    Inventor： Bryan Park ,  Daniel Mahgerefteh ,  Zheng Yong ,  Joyce Kai See Poon

    IPC: G02B6/14 ,  G02B6/126 ,  G02B6/12 ,  G02B6/122 ,  G02B6/125 ,  G02B6/27 ,  G02B6/293

    Abstract: A system may include a polarization rotator combiner. The polarization rotator combiner may include a first stage, a second stage, and a third stage. The first stage may receive a first component of light with a TE00 polarization and a second component of light with the TE00 polarization. The first stage may draw optical paths of the first and second components together. The second stage may receive the first component and the second component from the first stage. The second stage may convert the polarization of the second component from the TE00 polarization to a TE01 polarization. The third stage may receive the first component and the second component from the second stage. The third stage may convert polarization of the second component from the TE01 polarization to a TM00 polarization. The third stage may output the first component and output the second component.

    ADIABATIC POLARIZATION ROTATOR COMBINER
    9.
    发明申请
    ADIABATIC POLARIZATION ROTATOR COMBINER 审中-公开

    公开(公告)号：US20200003953A1

    公开(公告)日：2020-01-02

    申请号：US16559474

    申请日：2019-09-03

    Applicant: FINISAR CORPORATION

    Inventor： Bryan Park ,  Daniel Mahgerefteh ,  Zheng Yong ,  Joyce Kai See Poon

    IPC: G02B6/126 ,  G02B6/12 ,  G02B6/122 ,  G02B6/125 ,  G02B6/27 ,  G02B6/293

    Abstract: A system may include a polarization rotator combiner. The polarization rotator combiner may include a first stage, a second stage, and a third stage. The first stage may receive a first component of light with a TE00 polarization and a second component of light with the TE00 polarization. The first stage may draw optical paths of the first and second components together. The second stage may receive the first component and the second component from the first stage. The second stage may convert the polarization of the second component from the TE00 polarization to a TE01 polarization. The third stage may receive the first component and the second component from the second stage. The third stage may convert polarization of the second component from the TE01 polarization to a TM00 polarization. The third stage may output the first component and output the second component.

    POLARIZATION INDEPENDENT DIRECTIONAL COUPLER
    10.
    发明申请
    POLARIZATION INDEPENDENT DIRECTIONAL COUPLER 审中-公开

    公开(公告)号：US20190229813A1

    公开(公告)日：2019-07-25

    申请号：US16373847

    申请日：2019-04-03

    Applicant: Finisar Corporation

    Inventor： Faraz Monifi ,  Bryan Park

    IPC: H04B10/67 ,  H04B10/69

    Abstract: A directional coupler may include a first waveguide and a second waveguide. The first waveguide may include an optical input port to receive an optical signal and a first output port. The second waveguide may include a terminated port and a second output port. The first and second optical waveguides may be configured to split the optical signal such that a first portion of the optical signal is directed to the first output port and a second portion of the optical signal is directed to the second output port. The first portion of the optical signal may include first substantially equal portions of a transverse magnetic (TM) polarization mode and a transverse electric (TE) polarization mode of the optical signal. The second portion of the optical signal may include second substantially equal portions of the TM polarization mode and the TE polarization mode of the optical signal.

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