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    Fiber coupler for silicon photonics
    42.
    发明授权
    Fiber coupler for silicon photonics 有权
    硅光子学光纤耦合器

    公开(公告)号：US09547129B1

    公开(公告)日：2017-01-17

    申请号：US14602164

    申请日：2015-01-21

    Applicant: INPHI CORPORATION

    Inventor： Masaki Kato ,  Radhakrishnan L. Nagarajan

    IPC: G02B6/00 ,  G02B6/26 ,  G02B6/245 ,  G02B6/30 ,  G02B6/122

    CPC classification number: G02B6/305 ,  G02B6/1228 ,  G02B6/136 ,  G02B6/26 ,  G02B2006/12061

    Abstract: An apparatus for converting fiber mode to waveguide mode. The apparatus includes a silicon substrate member and a dielectric member having an elongated body. Part of the elongated body from a back end overlies the silicon substrate member and remaining part of the elongated body up to a front end is separated from the silicon substrate member by a second dielectric material at an under region. The apparatus also includes a waveguide including a segment from the back end to a tail end formed on the dielectric member at least partially overlying the remaining part of the elongated body. The segment is buried in a cladding overlying entirely the dielectric member. The cladding has a refractive index that is less than the waveguide but includes an index-graded section with decreasing index that is formed at least over the segment from the tail end toward the back end.

    Abstract translation: 一种用于将光纤模式转换为波导模式的装置。 该装置包括硅衬底构件和具有细长主体的电介质构件。 来自后端的细长体的一部分覆盖硅衬底构件，并且细长体的剩余部分直到前端，通过第二电介质材料在下部区域与硅衬底构件分离。 该装置还包括波导，其包括从后端到形成在电介质构件上的尾端的段，至少部分地覆盖在细长体的剩余部分上。 该段被埋在覆盖整个电介质构件的覆层中。 包层具有小于波导的折射率，但是包括具有从尾端到后端至少在该段上形成的具有降低的折射率的折射率梯度部分。

    Broadband silicon nitride polarization beam splitter
    43.
    发明授权
    Broadband silicon nitride polarization beam splitter 有权
    宽带氮化硅偏振光束分离器

    公开(公告)号：US09547127B1

    公开(公告)日：2017-01-17

    申请号：US15153658

    申请日：2016-05-12

    Applicant: INPHI CORPORATION

    Inventor： Jie Lin ,  Masaki Kato

    IPC: G02B6/126 ,  G02B6/27 ,  G02B6/28 ,  G02B6/12

    CPC classification number: G02B6/126 ,  G02B6/2773 ,  G02B6/2804 ,  G02B2006/12035 ,  G02B2006/12116 ,  G02B2006/12147 ,  G02B2006/1215 ,  G02B2006/12164

    Abstract: A compact polarization beam splitter is formed by cascading two stages of directional couplers each containing two waveguides laid in parallel with a coupling gap. Each waveguide is made by silicon nitride material having a minimum length configured to be comparable with a coupling length for a TE polarization mode being set as twice of a coupling length for a TM polarization mode. A first-stage direction coupler is optimized by making the coupling gap smaller/greater than a nominal value to maximize TE/TM extinction ratio at least for a shorter/longer wavelength window of a designated wavelength band and each of two second-stage directional couplers is optimized by making the coupling gap greater/smaller than the nominal value to maximize TE/TM extinction ratio at least for a complementary longer/shorter wavelength window of the same designated wavelength band.

    Abstract translation: 紧凑的偏振分束器通过级联两级定向耦合器形成，每个定向耦合器包含与耦合间隙平行放置的两个波导。 每个波导由氮化硅材料制成，其最小长度被配置为与用于TM偏振模式的TE偏振模式的耦合长度的两倍的耦合长度相当。 通过使耦合间隙小于/大于标称值来优化第一级方向耦合器，以使至少对于指定波长带的较短/较长波长窗口以及两个第二级定向耦合器中的每一个的TE / TM消光比最大化 通过使耦合间隙大于/小于标称值来优化，以使至少对于相同指定波长带的互补较长/较短波长窗口最大化TE / TM消光比。

    Method of attaching fiber block to silicon photonics
    45.
    发明授权
    Method of attaching fiber block to silicon photonics 有权
    将光纤块连接到硅光子学的方法

    公开(公告)号：US09423561B1

    公开(公告)日：2016-08-23

    申请号：US14745211

    申请日：2015-06-19

    Applicant: INPHI CORPORATION

    Inventor： Hsu-Feng Chou ,  Masaki Kato ,  Radhakrishnan L. Nagarajan

    IPC: G02B6/26 ,  G02B6/12

    CPC classification number: G02B6/30 ,  G02B6/3652

    Abstract: An apparatus to attach a fiber block to a silicon waveguide. The apparatus includes a holder base holding a portion of an array of optical fibers aligned optically in multiple slots in parallel. The apparatus further includes a holder cap combined with the holder base for fixing the portion of the fibers and leaving the fibers free with arbitrary length beyond a first edge of the holder base but keeping only additional second length of the fibers beyond a second edge of the holder base with fiber ending facets at the second length. Additionally, the apparatus includes a silicon photonics waveguide chip including an attachment section connected to a waveguide section. The attachment section includes multiple grooves laid in parallel for respectively attaching with the second length of the fibers so that the fiber ending facets are coupled to multiple waveguides formed in parallel in the waveguide section.

    Abstract translation: 一种将光纤块连接到硅波导的装置。 该装置包括保持基座，其保持光学阵列的一部分光学地并列在多个槽中。 该装置还包括与保持器基座组合的保持器盖，用于固定纤维的该部分并使纤维以任意长度自由地延伸超过保持器基座的第一边缘，但是仅保留另外的第二长度的纤维超过第二边缘 在第二长度上具有光纤端面的支架基座。 另外，该装置包括硅光子学波导芯片，其包括连接到波导部分的附接部分。 附接部分包括平行放置的多个沟槽，用于分别与第二长度的纤维连接，使得光纤端面与波导部分中平行形成的多个波导耦合。

    TE polarizer based on SOI platform
    47.
    发明授权
    TE polarizer based on SOI platform 有权

    公开(公告)号：US11099327B2

    公开(公告)日：2021-08-24

    申请号：US16814825

    申请日：2020-03-10

    Applicant: INPHI CORPORATION

    Inventor： Jie Lin ,  Masaki Kato

    IPC: G02B6/27 ,  G02B6/126 ,  G02B6/12

    Abstract: The present application discloses a Transverse Electric (TE) polarizer. The TE polarizer includes a semiconductor substrate having an oxide layer. The TE polarizer further includes a waveguide embedded in the oxide layer. Additionally, the TE polarizer includes a plate structure embedded in the oxide layer substantially in parallel to the waveguide with a gap distance. In an embodiment, the plate structure induces an extra transmission loss to a Transverse Magnetic (TM) mode in a light wave traveling through the waveguide.

    Package structure for photonic transceiving device
    48.
    发明授权
    Package structure for photonic transceiving device 有权

    公开(公告)号：US10908370B2

    公开(公告)日：2021-02-02

    申请号：US16793550

    申请日：2020-02-18

    Applicant: INPHI CORPORATION

    Inventor： Radhakrishnan L. Nagarajan ,  Peng-Chih Li ,  Masaki Kato

    IPC: G02B6/42 ,  H04B10/40 ,  H04B10/516

    Abstract: A photonic transceiver apparatus in QSFP package. The apparatus includes a case having a base member, two partial side members, and a lid member to provide a spatial volume with an opening at a back end of the base member. Additionally, the apparatus includes a PCB, installed inside the spatial volume over the base member having a pluggable electrical connector at the back end. Further, the apparatus includes multiple optical transmitting devices in mini-transmit-optical-sub-assembly package, each being mounted on a common support structure and having a laser output port in reversed orientation toward the back end. Furthermore, the apparatus includes a silicon photonics chip, including a fiber-to-silicon attachment module, mounted on the PCB and coupled to a modulation driver module and a trans-impedance amplifier module. Moreover, the apparatus includes a pair of optical input/output ports being back connected to the fiber-to-silicon attachment module.

    Dual-slab-layer low-loss silicon optical modulator
    49.
    发明授权
    Dual-slab-layer low-loss silicon optical modulator 有权

    公开(公告)号：US10852570B1

    公开(公告)日：2020-12-01

    申请号：US16655090

    申请日：2019-10-16

    Applicant: INPHI CORPORATION

    Inventor： Xiaoguang Tu ,  Masaki Kato

    IPC: G02F1/025 ,  G02F1/225 ,  G02F1/015 ,  G02F1/21

    Abstract: A silicon optical modulator is fabricated to have a multi-slab structure between the contacts and the waveguide, imparting desirable performance attributes. A first slab comprises dopant of a first level. A second slab adjacent to (e.g., on top of) the first slab, comprises a doped region proximate to a contact, and an intrinsic region proximate to the waveguide. The parallel resistance properties and low overlap between the highly doped silicon and optical mode pigtail afforded by the multi-slab configuration, allow the modulator to operate with reduced optical losses and at a high speed. Embodiments may be implemented in a Mach-Zehnder interferometer or in micro-ring resonator modulator configuration.

    Optical equalizer for photonics system
    50.
    发明授权
    Optical equalizer for photonics system 有权

    公开(公告)号：US10274681B1

    公开(公告)日：2019-04-30

    申请号：US15853422

    申请日：2017-12-22

    Applicant: INPHI CORPORATION

    Inventor： Samira Karimelahi ,  Masaki Kato

    IPC: G02B6/293 ,  H04B10/25 ,  G02B6/28 ,  H04L25/03

    Abstract: The present disclosure provides an optical equalizer for photonics system in an electric-optical communication network. The optical equalizer includes an input port and an output port. Additionally, the optical equalizer includes a filter having a number of stages coupled to each other in a multi-stage series with an output terminal of any stage being coupled to an input terminal of an adjacent next stage while the input terminal of a first stage of the multi-stage series being coupled from the input port. Each stage includes a tap terminal configured to pass an optical power factored by a coefficient of multiplication from the corresponding input terminal of the stage to a tap-output path characterized by a corresponding phase delay. Furthermore, the optical equalizer includes a combiner configured to sum up the optical powers respectively from the number of tap-output paths of the multi-stage series to the output port.

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