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    POLARIZATION INDEPENDENT MULTIPLEXER / DEMULTIPLEXER
    14.
    发明申请
    POLARIZATION INDEPENDENT MULTIPLEXER / DEMULTIPLEXER 审中-公开

    公开(公告)号：US20170168237A1

    公开(公告)日：2017-06-15

    申请号：US15374856

    申请日：2016-12-09

    Applicant: FINISAR CORPORATION

    Inventor： Daniel Mahgerefteh ,  Jared Mikkelsen

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

    CPC classification number: G02B6/12007 ,  G02B6/105 ,  G02B6/107 ,  G02B6/12023 ,  G02B6/124 ,  G02B6/126 ,  G02B6/2931 ,  G02B2006/12097

    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.

    Adiabatic optical coupler for direct SOI to interposer coupling
    15.
    发明授权
    Adiabatic optical coupler for direct SOI to interposer coupling 有权

    公开(公告)号：US10962721B2

    公开(公告)日：2021-03-30

    申请号：US16547252

    申请日：2019-08-21

    Applicant: FINISAR CORPORATION

    Inventor： Shiyun Lin ,  Daniel Mahgerefteh

    IPC: G02B6/30 ,  G02B6/34 ,  G02B6/122

    Abstract: An adiabatic optical coupler can include: a top tapered region that includes a top taper having two top tapered sides that taper from a first end region to a top tip region, the top taper having a first length; and a bottom tapered region under the top tapered region, wherein the bottom tapered region includes a bottom taper having two bottom tapered sides that taper from the first end region to a bottom tip region, the bottom taper having a second length that is longer than the first length. Another adiabatic optical coupler can include: a tapered region that includes a taper having two tapered sides that taper from an end region to a tip region; and a sub-wavelength grating (SWG) optically coupled with the tip region. Another adiabatic optical coupler can include a combination of these two adiabatic optical couplers.

    VERTICAL JUNCTION BASED SILICON MODULATOR
    16.
    发明申请
    VERTICAL JUNCTION BASED SILICON MODULATOR 审中-公开

    公开(公告)号：US20200257180A1

    公开(公告)日：2020-08-13

    申请号：US16271467

    申请日：2019-02-08

    Applicant: Finisar Corporation

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

    IPC: G02F1/225

    Abstract: In one example embodiment, an optical circuit for optical modulation of light may include an input waveguide including a first thickness, an optical modulator including a second thickness, and a tapered transition that optically couples the optical modulator and the input waveguide. The second thickness may be smaller than the first thickness. The tapered transition may adiabatically transform the optical mode of the input waveguide to the optical modulator.

    Adiabatically coupled optical system
    17.
    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
    18.
    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.

    ECHELLE GRATING DEMUX/MUX IN SIN
    19.
    发明申请
    ECHELLE GRATING DEMUX/MUX IN SIN 审中-公开

    公开(公告)号：US20180217330A1

    公开(公告)日：2018-08-02

    申请号：US15885544

    申请日：2018-01-31

    Applicant: Finisar Corporation

    Inventor： Daniel Mahgerefteh

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

    CPC classification number: G02B6/12014 ,  G01J3/0221 ,  G01J3/0259 ,  G01J3/1809 ,  G02B5/1809 ,  G02B5/1814 ,  G02B5/1861 ,  G02B6/12019 ,  G02B6/1203 ,  G02B6/29326

    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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