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    Optical dispersion compensator on silicon
    101.
    发明授权
    Optical dispersion compensator on silicon 有权

    公开(公告)号：US11002913B2

    公开(公告)日：2021-05-11

    申请号：US16835093

    申请日：2020-03-30

    Applicant: INPHI CORPORATION

    Inventor： Xiaoguang Tu ,  Radhakrishnan L. Nagarajan ,  Masaki Kato

    IPC: G02B6/293 ,  G02B6/122 ,  G02B6/30 ,  G02B6/02 ,  H04B10/2513 ,  G02B6/12

    Abstract: An optical dispersion compensator integrated with a silicon photonics system including a first phase-shifter coupled to a second phase-shifter in parallel on the silicon substrate characterized in an athermal condition. The dispersion compensator further includes a third phase-shifter on the silicon substrate to the first phase-shifter and the second phase-shifter through two 2×2 splitters to form an optical loop. A second entry port of a first 2×2 splitter is for coupling with an input fiber and a second exit port of a second 2×2 splitter is for coupling with an output fiber. The optical loop is characterized by a total phase delay tunable via each of the first phase-shifter, the second phase-shifter, and the third phase-shifter such that a normal dispersion (>0) at a certain wavelength in the input fiber is substantially compensated and independent of temperature.

    Optical module
    102.
    发明授权
    Optical module 有权

    公开(公告)号：US10951343B2

    公开(公告)日：2021-03-16

    申请号：US16926344

    申请日：2020-07-10

    Applicant: INPHI CORPORATION

    Inventor： Radhakrishnan L. Nagarajan

    IPC: H04J14/02 ,  H04B10/40

    Abstract: An integrated apparatus with optical/electrical interfaces and protocol converter on a single silicon substrate. The apparatus includes an optical module comprising one or more modulators respectively coupled with one or more laser devices for producing a first optical signal to an optical interface and one or more photodetectors for detecting a second optical signal from the optical interface to generate a current signal. Additionally, the apparatus includes a transmit lane module coupled between the optical module and an electrical interface to receive a first electric signal from the electrical interface and provide a framing protocol for driving the one or more modulators. Furthermore, the apparatus includes a receive lane module coupled between the optical module and the electrical interface to process the current signal to send a second electric signal to the electrical interface.

    Integrated compact in-package light engine
    103.
    发明授权
    Integrated compact in-package light engine 有权

    公开(公告)号：US10892830B1

    公开(公告)日：2021-01-12

    申请号：US17033194

    申请日：2020-09-25

    Applicant: INPHI CORPORATION

    Inventor： Ding Liang ,  Mark Patterson ,  Roberto Coccioli ,  Radhakrishnan L. Nagarajan

    IPC: H04B10/40 ,  G02B6/42 ,  H01S5/02 ,  H01S5/022 ,  H01S5/12 ,  H04J14/02 ,  G02F1/313

    Abstract: An integrated compact light engine configured in a on-board in-package optics assembly. The compact light engine includes a single substrate to integrate multiple optical-electrical modules. Each optical-electrical module includes an integrated optical transceiver based on silicon-photonics platform, in which a transmit path configured to output four light signals centered at four CWDM wavelengths and from four laser devices and to modulate the four light signals respectively by four modulators driven by a driver chip and to deliver a multiplexed transmission light. A receive path includes a photodetector to detect four input signals demultiplexed from an incoming light and a trans-impedance amplifier chip to process electrical signals converted from the four input signals detected. A multi-channel light engine is formed by co-integrating or co-mounting a switch device with multiple compact light engines on a common substrate member to provide up to 51.2 Tbit/s total capacity of data communication with median-or-short-reach electrical interconnect.

    Small form factor transmitting device
    104.
    发明授权
    Small form factor transmitting device 有权

    公开(公告)号：US10892598B2

    公开(公告)日：2021-01-12

    申请号：US16679014

    申请日：2019-11-08

    Applicant: INPHI CORPORATION ,  Luxnet Corporation

    Inventor： Radhakrishnan L. Nagarajan ,  Peng-Chih Li ,  Pi-Cheng Law

    IPC: H01S5/06 ,  H04B10/50 ,  H01S5/024 ,  H01S5/00 ,  H01S5/022 ,  G02B6/42 ,  H01S5/068 ,  H01S5/125

    Abstract: A packaged transmitter device includes a base member comprising a planar part mounted with a thermoelectric cooler, a transmitter, and a coupling lens assembly, and an assembling part connected to one side of the planar part. The device further includes a circuit board bended to have a first end region and a second end region being raised to a higher level. The first end region disposed on a top surface of the planar part includes multiple electrical connection patches respectively connected to the thermoelectric and the transmitter. The second end region includes an electrical port for external connection. Additionally, the device includes a cover member disposed over the planar part. Furthermore, the device includes a cylindrical member installed to the assembling part for enclosing an isolator aligned to the coupling lens assembly along its axis and connected to a fiber to couple optical signal from the transmitter to the fiber.

    Small form factor transmitting device
    105.
    发明授权
    Small form factor transmitting device 有权

    公开(公告)号：US10559941B2

    公开(公告)日：2020-02-11

    申请号：US16160817

    申请日：2018-10-15

    Applicant: INPHI CORPORATION ,  LUXNET CORPORATION

    Inventor： Radhakrishnan L. Nagarajan ,  Peng-Chih Li ,  Pi-Cheng Law

    IPC: H01S5/06 ,  G02B6/42 ,  H01S5/00 ,  H01S5/022 ,  H01S5/125 ,  H04B10/50 ,  H01S5/024 ,  H01S5/068

    Abstract: A packaged transmitter device includes a base member comprising a planar part mounted with a thermoelectric cooler, a transmitter, and a coupling lens assembly, and an assembling part connected to one side of the planar part. The device further includes a circuit board bended to have a first end region and a second end region being raised to a higher level. The first end region disposed on a top surface of the planar part includes multiple electrical connection patches respectively connected to the thermoelectric and the transmitter. The second end region includes an electrical port for external connection. Additionally, the device includes a cover member disposed over the planar part. Furthermore, the device includes a cylindrical member installed to the assembling part for enclosing an isolator aligned to the coupling lens assembly along its axis and connected to a fiber to couple optical signal from the transmitter to the fiber.

    Optical dispersion compensator on silicon
    106.
    发明授权
    Optical dispersion compensator on silicon 有权

    公开(公告)号：US10527795B2

    公开(公告)日：2020-01-07

    申请号：US16157409

    申请日：2018-10-11

    Applicant: INPHI CORPORATION

    Inventor： Xiaoguang Tu ,  Radhakrishnan L. Nagarajan ,  Masaki Kato

    IPC: G02B6/293 ,  G02B6/122 ,  G02B6/30 ,  G02B6/02 ,  H04B10/2513 ,  G02B6/12

    Abstract: An optical dispersion compensator integrated with a silicon photonics system including a first phase-shifter coupled to a second phase-shifter in parallel on the silicon substrate characterized in an athermal condition. The dispersion compensator further includes a third phase-shifter on the silicon substrate to the first phase-shifter and the second phase-shifter through two 2×2 splitters to form an optical loop. A second entry port of a first 2×2 splitter is for coupling with an input fiber and a second exit port of a second 2×2 splitter is for coupling with an output fiber. The optical loop is characterized by a total phase delay tunable via each of the first phase-shifter, the second phase-shifter, and the third phase-shifter such that a normal dispersion (>0) at a certain wavelength in the input fiber is substantially compensated and independent of temperature.

    Delay line interferometer with polarization compensation at selective frequency
    110.
    发明授权
    Delay line interferometer with polarization compensation at selective frequency 有权

    公开(公告)号：US10274680B2

    公开(公告)日：2019-04-30

    申请号：US16015854

    申请日：2018-06-22

    Applicant: INPHI CORPORATION

    Inventor： Masaki Kato ,  Radhakrishnan L. Nagarajan

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

    Abstract: An apparatus of polarization self-compensated delay line interferometer. The apparatus includes a first waveguide arm of a first material of a first length disposed between an input coupler and an output coupler and a second waveguide arm of the first material of a second length different from the first length disposed between the same input coupler and the same output coupler. The apparatus produces an interference spectrum with multiple periodic passband peaks where certain TE (transverse electric) and TM (transverse magnetic) polarization mode passband peaks are lined up. The apparatus further includes a section of waveguide of a birefringence material of a third length added to the second waveguide arm to induce a phase shift of the lined-up TE/TM passband peaks to a designated grid as corresponding polarization compensated channels of a wide optical band.

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