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公开(公告)号：US10382125B2
公开(公告)日：2019-08-13
申请号：US15411914
申请日：2017-01-20
Applicant: INPHI CORPORATION
Inventor： Todd Rope , Radhakrishnan L. Nagarajan
IPC: H04B10/079 , H04B10/40 , H04L1/00
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.
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公开(公告)号：US10128955B2
公开(公告)日：2018-11-13
申请号：US15990003
申请日：2018-05-25
Applicant: INPHI CORPORATION
Inventor： Todd Rope , Radhakrishnan L. Nagarajan , Jamal Riani , Pulkit Khandelwal
IPC: H04B10/40 , H04B10/073 , H04B10/524 , H04B10/079
Abstract: A Pulse Amplitude Modulated (PAM) optical device utilizing multiple wavelengths, features a communications interface having enhanced diagnostics capability. New registers are created to house additional diagnostic information, such as error rates. The diagnostic information may be stored in raw form, or as processed on-chip utilizing local resources.
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公开(公告)号：US09876579B2
公开(公告)日：2018-01-23
申请号：US15481920
申请日：2017-04-07
Applicant: INPHI CORPORATION
Inventor： Radhakrishnan L. Nagarajan , Todd Rope
CPC classification number: H04B10/5161 , G02F1/0123 , G02F1/2255 , G02F1/2257 , G02F2001/212 , H03M1/682 , H04B10/524 , H04B10/541
Abstract: A single chip dual-channel driver for two independent traveling wave modulators. The driver includes two differential pairs inputs per channel respectively configured to receive two digital differential pair signals. The driver further includes a two-bit DAC per channel coupled to the two differential pairs inputs to produce a single analog differential pair PAM signal at a differential pair output for driving a traveling wave modulator. Additionally, the driver includes a control block having internal voltage/current signal generators respective coupled to each input and the 2-bit DAC for providing a bias voltage, a tail current, a dither signal to assist modulation control per channel. Furthermore, the driver includes an internal I2C communication block coupled to a high-speed clock generator to generate control signals to the control block and coupled to host via an I2C digital communication interface.
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公开(公告)号：US09654221B1
公开(公告)日：2017-05-16
申请号：US15406273
申请日：2017-01-13
Applicant: INPHI CORPORATION
Inventor： Radhakrishnan L. Nagarajan , Todd Rope
IPC: H04B10/00 , H04B10/524
CPC classification number: H04B10/5161 , G02F1/0123 , G02F1/2255 , G02F1/2257 , G02F2001/212 , H03M1/682 , H04B10/524 , H04B10/541
Abstract: A single chip dual-channel driver for two independent traveling wave modulators. The driver includes two differential pairs inputs per channel respectively configured to receive two digital differential pair signals. The driver further includes a two-bit DAC per channel coupled to the two differential pairs inputs to produce a single analog differential pair PAM signal at a differential pair output for driving a traveling wave modulator. Additionally, the driver includes a control block having internal voltage/current signal generators respective coupled to each input and the 2-bit DAC for providing a bias voltage, a tail current, a dither signal to assist modulation control per channel. Furthermore, the driver includes an internal I2C communication block coupled to a high-speed clock generator to generate control signals to the control block and coupled to host via an I2C digital communication interface.
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