公开(公告)号：US09998228B1

公开(公告)日：2018-06-12

申请号：US15342855

申请日：2016-11-03

Applicant: INPHI CORPORATION

Inventor： Shih Cheng Wang ,  Jinwoo Cho ,  Shu Hao Fan

IPC: H04B10/50

CPC classification number: H04B10/50575 ,  H04B10/5053

Abstract: Systems and methods described herein include methods and systems for controlling bias voltage provided to an optical modulating device. The optical modulating device is biased at a bias point that is different from a null point of the device such that an offset to the received optical power due to limited extinction ratio is reduced.

公开(公告)号：US10992377B2

公开(公告)日：2021-04-27

申请号：US16843751

申请日：2020-04-08

Applicant: INPHI CORPORATION

Inventor： Shih Cheng Wang ,  Seyedmohammadreza Motaghiannezam ,  Matthew C. Bashaw

IPC: H04B10/079 ,  H04L27/01 ,  H04L5/00 ,  H04B10/2507 ,  H04B10/61 ,  H04L25/03 ,  H04B10/07 ,  H04L7/00 ,  H04N5/21 ,  H04J14/02

Abstract: A receiver applies a calibration method to compensate for skew between input channels. The receiver skew is estimated by observing the coefficients of an adaptive equalizer which adjusts the coefficients based on time-varying properties of the multi-channel input signal. The receiver skew is compensated by programming the phase of the sampling clocks for the different channels. Furthermore, during real-time operation of the receiver, channel diagnostics is performed to automatically estimate differential group delay and/or other channel characteristics based on the equalizer coefficients using a frequency averaging or polarization averaging approach. Framer information can furthermore be utilized to estimate differential group delay that is an integer multiple of the symbol rate. Additionally, a DSP reset may be performed when substantial signal degradation is detected based on the channel diagnostics information.

公开(公告)号：US10305589B2

公开(公告)日：2019-05-28

申请号：US15838079

申请日：2017-12-11

Applicant: INPHI CORPORATION

Inventor： Shih Cheng Wang ,  Seyedmohammadreza Motaghiannezam ,  Matthew C. Bashaw

IPC: H04L5/00 ,  H04B10/079 ,  H04L27/01 ,  H04L25/03 ,  H04B10/07 ,  H04B10/2507 ,  H04B10/61 ,  H04L7/00

Abstract: A receiver applies a calibration method to compensate for skew between input channels. The receiver skew is estimated by observing the coefficients of an adaptive equalizer which adjusts the coefficients based on time-varying properties of the multi-channel input signal. The receiver skew is compensated by programming the phase of the sampling clocks for the different channels. Furthermore, during real-time operation of the receiver, channel diagnostics is performed to automatically estimate differential group delay and/or other channel characteristics based on the equalizer coefficients using a frequency averaging or polarization averaging approach. Framer information can furthermore be utilized to estimate differential group delay that is an integer multiple of the symbol rate. Additionally, a DSP reset may be performed when substantial signal degradation is detected based on the channel diagnostics information.

公开(公告)号：US10038506B2

公开(公告)日：2018-07-31

申请号：US15800745

申请日：2017-11-01

Applicant: INPHI CORPORATION

Inventor： Diego Ernesto Crivelli ,  Mario Rafael Hueda ,  Hugo Santiago Carrer ,  Jeffrey Zachan ,  Vadim Gutnik ,  Martin Ignacio Del Barco ,  Ramiro Rogelio Lopez ,  Shih Cheng Wang ,  Geoffrey O. Hatcher ,  Jorge Manuel Finochietto ,  Michael Yeo ,  Andre Chartrand ,  Norman L. Swenson ,  Paul Voois ,  Oscar Ernesto Agazzi

IPC: H04B10/00 ,  H04B10/61 ,  H04B10/40 ,  H04B10/2569 ,  H04J14/00

CPC classification number: H04B10/6162 ,  H04B10/2569 ,  H04B10/40 ,  H04B10/6161

Abstract: A transceiver for fiber optic communications. The transceiver can include a transmitter module having a transmitter host interface configured to receive an input host signal; a transmitter framer configured to frame the input host signal and to generate a framed host signal; and a transmitter coder configured to encode the framed host signal to generate an encoded host signal for transmission over a communication channel. The transceiver can also include a receiver module having a bulk chromatic dispersion, fiber length estimation, and coarse carrier recovery circuit configured to equalize a digital input ingress signal to generate an equalized ingress signal; a receiver framer configured to frame the equalized ingress signal to generate a framed ingress signal; and a receiver host interface configured to output the framed ingress signal. The receiver host interface is compatible with a framing protocol of the receiver framer.

公开(公告)号：US09838140B1

公开(公告)日：2017-12-05

申请号：US15597120

申请日：2017-05-16

Applicant: Inphi Corporation

Inventor： Diego Ernesto Crivelli ,  Mario Rafael Hueda ,  Hugo Santiago Carrer ,  Jeffrey Zachan ,  Vadim Gutnik ,  Martin Ignacio del Barco ,  Ramiro Rogelio Lopez ,  Shih Cheng Wang ,  Geoffrey O. Hatcher ,  Jorge Manuel Finochietto ,  Michael Yeo ,  Andre Chartrand ,  Norman L. Swenson ,  Paul Voois ,  Oscar Ernesto Agazzi

IPC: H04B10/00 ,  H04B10/61 ,  H04B10/2569 ,  H04B10/40 ,  H04J14/00

CPC classification number: H04B10/6162 ,  H04B10/2569 ,  H04B10/40 ,  H04B10/6161

Abstract: A transceiver for fiber optic communications.

公开(公告)号：US10243663B2

公开(公告)日：2019-03-26

申请号：US15980448

申请日：2018-05-15

Applicant: INPHI CORPORATION

Inventor： Shih Cheng Wang ,  Jinwoo Cho ,  Shu Hao Fan

IPC: H04B10/50

Abstract: Systems and methods described herein include methods and systems for controlling bias voltage provided to an optical modulating device. The optical modulating device is biased at a bias point that is different from a null point of the device such that an offset to the received optical power due to limited extinction ratio is reduced.

公开(公告)号：US09871583B1

公开(公告)日：2018-01-16

申请号：US15449884

申请日：2017-03-03

Applicant: INPHI Corporation

Inventor： Shih Cheng Wang ,  Seyedmohammadreza Motaghiannezam ,  Matthew C. Bashaw

IPC: H04B10/079 ,  H04L25/03 ,  H04B10/2507 ,  H04B10/61

CPC classification number: H04B10/0795 ,  H04B10/07 ,  H04B10/25073 ,  H04B10/614 ,  H04B10/616 ,  H04L7/0058 ,  H04L25/03 ,  H04L25/03019 ,  H04L25/03292 ,  H04L25/03878 ,  H04L27/01

Abstract: A receiver applies a calibration method to compensate for skew between input channels. The receiver skew is estimated by observing the coefficients of an adaptive equalizer which adjusts the coefficients based on time-varying properties of the multi-channel input signal. The receiver skew is compensated by programming the phase of the sampling clocks for the different channels. Furthermore, during real-time operation of the receiver, channel diagnostics is performed to automatically estimate differential group delay and/or other channel characteristics based on the equalizer coefficients using a frequency averaging or polarization averaging approach. Framer information can furthermore be utilized to estimate differential group delay that is an integer multiple of the symbol rate. Additionally, a DSP reset may be performed when substantial signal degradation is detected based on the channel diagnostics information.

公开(公告)号：US10651930B2

公开(公告)日：2020-05-12

申请号：US16387209

申请日：2019-04-17

Applicant: INPHI CORPORATION

Inventor： Shih Cheng Wang ,  Seyedmohammadreza Motaghiannezam ,  Matthew C. Bashaw

IPC: H04J14/02 ,  H04B10/079 ,  H04L27/01 ,  H04L5/00 ,  H04B10/2507 ,  H04B10/61 ,  H04L25/03 ,  H04B10/07 ,  H04L7/00 ,  H04N5/21

Abstract: A receiver applies a calibration method to compensate for skew between input channels. The receiver skew is estimated by observing the coefficients of an adaptive equalizer which adjusts the coefficients based on time-varying properties of the multi-channel input signal. The receiver skew is compensated by programming the phase of the sampling clocks for the different channels. Furthermore, during real-time operation of the receiver, channel diagnostics is performed to automatically estimate differential group delay and/or other channel characteristics based on the equalizer coefficients using a frequency averaging or polarization averaging approach. Framer information can furthermore be utilized to estimate differential group delay that is an integer multiple of the symbol rate. Additionally, a DSP reset may be performed when substantial signal degradation is detected based on the channel diagnostics information.

公开(公告)号：US10530483B2

公开(公告)日：2020-01-07

申请号：US16268702

申请日：2019-02-06

Applicant: INPHI CORPORATION

Inventor： Shih Cheng Wang ,  Jinwoo Cho ,  Shu Hao Fan

IPC: H04B10/50

Abstract: Systems and methods described herein include methods and systems for controlling bias voltage provided to an optical modulating device. The optical modulating device is biased at a bias point that is different from a null point of the device such that an offset to the received optical power due to limited extinction ratio is reduced.