公开(公告)号：US20210111833A1

公开(公告)日：2021-04-15

申请号：US17127510

申请日：2020-12-18

Applicant: INPHI CORPORATION

Inventor： Benjamin P. SMITH ,  Arash FARHOODFAR

IPC: H04L1/00 ,  H04B10/50 ,  H04B10/516 ,  H04B10/54 ,  H03M13/29 ,  H04B10/532 ,  H04B10/69

Abstract: An optical module processes first FEC (Forward Error Correction) encoded data produced by a first FEC encoder. The optical module has a second FEC encoder for further coding a subset of the first FEC encoded data to produce second FEC encoded data. The optical module also has an optical modulator for modulating, based on a combination of the second FEC encoded data and a remaining portion of the first FEC encoded data that is not further coded, an optical signal for transmission over an optical channel. The second FEC encoder is an encoder for an FEC code that has a bit-level trellis representation with a number of states in any section of the bit-level trellis representation being less than or equal to 64 states. In this manner, the second FEC encoder has relatively low complexity (e.g. relatively low transistor count) that can reduce power consumption for the optical module.

公开(公告)号：US20210088738A1

公开(公告)日：2021-03-25

申请号：US16578090

申请日：2019-09-20

Applicant: INPHI CORPORATION

Inventor： Chris TOGAMI ,  Radhakrishnan L. NAGARAJAN ,  Gary SASSER ,  Brian TAYLOR

IPC: G02B6/42 ,  H05K7/20 ,  F28F1/14

Abstract: An apparatus for dissipating heat from a photonic transceiver module. The apparatus includes a top-plate member disposed in a length direction of a package for the photonic transceiver module. The apparatus further includes multiple fins formed on the top-plate member along the length direction from a backend position to a frontend position except at least one fin with a shorter length, forming an elongated void from the backend position to one backend of the at least one fin. Additionally, the apparatus includes a cover member disposed over the multiple fins with a horizontal sheet, two vertical side sheets, and a flange bent vertically from a middle portion of backend of the horizontal sheet. Furthermore, the apparatus includes a spring loaded in the elongated void between the flange and the one backend of the at least one fin to minimize an air gap at the backend of the horizontal sheet.

公开(公告)号：US20210083801A1

公开(公告)日：2021-03-18

申请号：US17108386

申请日：2020-12-01

Applicant: INPHI CORPORATION

Inventor： Benjamin P. SMITH ,  Jamal RIANI ,  Arash FARHOODFAR ,  Sudeep BHOJA

IPC: H04L1/00 ,  H03M13/19 ,  H03M13/25 ,  H03M13/29

Abstract: The present invention relates to data communication systems and methods thereof. More specifically, embodiments of the present invention provide a data transmission method. Data are encoded with staircase encoder, and staircase coded blocks are first interleaved then combined into outer code frames. Code frames additionally include sync words and padding bits. A second interleaving is applied to the bits of the code frames, and Hamming encoding is performed on the output of the second interleaver. Hamming codewords are Gray-mapped to dual-polarized quadrature-amplitude-modulation (DP-QAM) symbols, and a third interleaving of the symbols from a set of successive Hamming codewords is performed. Pilot symbols are inserted periodically into the stream of DP-QAM symbols. There are other embodiments as well.

公开(公告)号：US10944485B2

公开(公告)日：2021-03-09

申请号：US16669239

申请日：2019-10-30

Applicant: INPHI CORPORATION

Inventor： Mario R. Hueda ,  José Correa ,  Oscar E. Agazzi

IPC: H04B10/61 ,  H04L25/03 ,  H04L7/00 ,  H04L27/06 ,  H04B10/079 ,  H04L1/00 ,  H04B10/40 ,  H04L27/26

Abstract: A method and structure for tap centering in a coherent optical receiver device. The center of gravity (CG) of the filter coefficients can be used to evaluate a proper convergence of a time-domain adaptive equalizer. However, the computation of CG in a dual-polarization optical coherent receiver is difficult when a frequency domain (FD) adaptive equalizer is adopted. In this case, the implementation of several inverse fast-Fourier transform (IFFT) stages is required to back time domain impulse response. Here, examples of the present invention estimate CG directly from the FD equalizer taps and compensate for an error of convergence based off of the estimated CG. This estimation method and associated device architecture is able to achieve an excellent tradeoff between accuracy and complexity.

公开(公告)号：US10944476B2

公开(公告)日：2021-03-09

申请号：US16508086

申请日：2019-07-10

Applicant: INPHI CORPORATION

Inventor： Jamal Riani ,  Sudeep Bhoja

IPC: H04L27/34 ,  H04B10/61 ,  H04B10/27 ,  H04B10/25 ,  H03K9/02 ,  H04B14/00 ,  H04L27/06 ,  H04L27/02

Abstract: The present invention is directed to data communication system and methods. More specifically, various embodiments of the present invention provide a communication interface that is configured to transfer data at high bandwidth using nDSQ format(s) over optical communication networks. In certain embodiments, the communication interface is used by various devices, such as spine switches and leaf switches, within a spine-leaf network architecture, which allows large amount of data to be shared among servers.

公开(公告)号：US10935723B2

公开(公告)日：2021-03-02

申请号：US16440814

申请日：2019-06-13

Applicant: INPHI CORPORATION

Inventor： Samira Karimelahi ,  Masaki Kato

IPC: G02B6/126 ,  G02B6/124 ,  G02B6/125 ,  G02B6/27 ,  G02B6/122 ,  G02B6/30 ,  G01M11/00 ,  G02B6/12 ,  G02B6/34

Abstract: A surface grating coupler for polarization splitting or diverse includes a planar layer and an array of scattering elements arranged in the planar layer at intersections of a first set of concentric elliptical curves crossing with a second set of concentric elliptical curves rotated proximately 90 or 180 degrees to form a two-dimensional (2D) grating. Additionally, the grating coupler includes a first waveguide in double-taper shape and a second waveguide in double-taper shape respectively for split or diverse an incident light into the 2D grating into two output light to two output ports with a same (either TE or TM) polarization mode or one output port with TE polarization mode and another output port with TM polarization mode. The polarization diverse grating coupler is required to test multiple polarization sensitive photonics components and can be used with other single polarization grating coupler via a fiber array to perform wafer-level testing.

公开(公告)号：US20210049124A1

公开(公告)日：2021-02-18

申请号：US17088197

申请日：2020-11-03

Applicant: Inphi Corporation

Inventor： Radhakrishnan L. NAGARAJAN ,  Chao XU

IPC: G06F15/78 ,  G06F13/42 ,  G02B6/12 ,  H04L27/00 ,  G06F13/364 ,  G06F13/40 ,  H04L1/00 ,  H04L25/03

Abstract: The present invention includes an integrated system-on-chip device configured on a substrate member. The device has a data input/output interface provided on the substrate member and configured for a predefined data rate and protocol. The device has an input/output block provided on the substrate member and coupled to the data input/output interface. The input/output block comprises a SerDes block, a CDR block, a compensation block, and an equalizer block. The SerDes block is configured to convert a first data stream of N having a first predefined data rate at a first clock rate into a second data stream of M having a second predefined data rate at a second clock rate. The device has a driver module provided on the substrate member and coupled to a signal processing block, and a driver interface provided on the substrate member and coupled to the driver module and a silicon photonics device.

公开(公告)号：US10924269B1

公开(公告)日：2021-02-16

申请号：US16053715

申请日：2018-08-02

Applicant: INPHI CORPORATION

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

IPC: H04L9/08 ,  H04B10/70 ,  H05K1/02 ,  G02B6/12 ,  G06Q20/06

Abstract: A compact optical transceiver formed by hybrid multichip integration. The optical transceiver includes a Si-photonics chip attached on a PCB. Additionally, the optical transceiver includes a first TSV interposer and a second TSV interposer separately attached nearby the Si-photonics chip on the PCB. Furthermore, the optical transceiver includes a driver chip flip-bonded partially on the Si-photonics chip through a first sets of bumps and partially on the first TSV interposer through a second sets of bumps. Moreover, the optical transceiver includes a transimpedance amplifier module chip flip-bonded partially on the Si-photonics chip through a third sets of bumps and partially on the second TSV interposer through a fourth set of bumps.

公开(公告)号：US20210028860A1

公开(公告)日：2021-01-28

申请号：US17071701

申请日：2020-10-15

Applicant: INPHI CORPORATION

Inventor： Todd ROPE ,  Radhakrishnan L. NAGARAJAN

IPC: H04B10/079 ,  H04B10/40

Abstract: The present invention is directed to communication systems and methods. According to an embodiment, a receiving optical transceiver determines signal quality for signals received from a transmitting optical transceiver. Information related to the signal quality is embedded into back-channel data and sent to the transmitting optical transceiver. The transmitting optical transceiver detects the presence of the back-channel data and adjusts one or more of its operating parameters based on the back-channel data. There are other embodiments as well.

公开(公告)号：US10862589B2

公开(公告)日：2020-12-08

申请号：US16828820

申请日：2020-03-24

Applicant: INPHI CORPORATION

Inventor： Todd Rope ,  Hari Shankar ,  Radhakrishnan L. Nagarajan

IPC: H04B10/079 ,  H04B10/516 ,  H04B10/40 ,  H04B10/572 ,  H04B10/50 ,  H04L1/20 ,  H04L1/00

Abstract: The present invention is directed to communication systems and methods. In a specific embodiment, the present invention provides an optical receiver that receives a data stream from an optical transmitter. The optical receiver determines a histogram contour parameter using the data stream and inserts the histogram contour parameter into a back-channel data segment, which is then transmitted to the optical transmitter. The optical transmitter changes its data transmission setting based on the histogram contour parameter. There are other embodiments as well.