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公开(公告)号：US20190354507A1
公开(公告)日：2019-11-21
申请号：US16529473
申请日：2019-08-01
Applicant: INPHI CORPORATION
Inventor： Radhakrishnan L. NAGARAJAN , Chao XU
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.
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公开(公告)号：US20190319703A1
公开(公告)日：2019-10-17
申请号：US16449159
申请日：2019-06-21
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：US20190013872A1
公开(公告)日：2019-01-10
申请号：US15644342
申请日：2017-07-07
Applicant: Inphi Corporation
Inventor： Todd ROPE , Hari SHANKAR , Radhakrishnan L. NAGARAJAN
IPC: H04B10/516 , H04B10/40 , H04B10/079 , H04B10/572 , H04L1/00 , H04B10/50
CPC classification number: H04B10/5161 , H04B10/07953 , H04B10/40 , H04B10/5057 , H04B10/572 , H04L1/0026 , H04L1/004 , H04L1/0045 , H04L1/203
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.
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公开(公告)号：US20180337745A1
公开(公告)日：2018-11-22
申请号：US16034668
申请日：2018-07-13
Applicant: INPHI CORPORATION
Inventor： Radhakrishnan L. NAGARAJAN
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.
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公开(公告)号：US20180299620A1
公开(公告)日：2018-10-18
申请号：US16015854
申请日：2018-06-22
Applicant: INPHI CORPORATION
Inventor： Masaki KATO , Radhakrishnan L. NAGARAJAN
CPC classification number: G02B6/274 , G02B6/1228 , G02B6/125 , G02B6/126 , G02B6/2793 , G02B6/29352 , G02B6/29395
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 passpand 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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Patent Agency Ranking
公开(公告)号：US20180217334A1
公开(公告)日：2018-08-02
申请号：US15928732
申请日：2018-03-22
Applicant: INPHI CORPORATION
Inventor： Masaki KATO , Radhakrishnan L. NAGARAJAN
IPC: G02B6/30
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.
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公开(公告)号：US20180191430A1
公开(公告)日：2018-07-05
申请号：US15903910
申请日：2018-02-23
Applicant: INPHI CORPORATION
Inventor： Radhakrishnan L. NAGARAJAN
IPC: H04B10/071 , H04L12/933 , H04B10/40 , H04L12/26 , H04Q11/00
CPC classification number: H04B10/071 , H04B10/40 , H04L43/50 , H04L49/109 , H04Q11/0005 , H04Q2011/0018 , H04Q2011/0035
Abstract: In an example, the present invention includes an integrated system-on-chip device. The device is configured on a single silicon substrate member. The device has a data input/output interface provided on the substrate member. The device has an input/output block provided on the substrate member and coupled to the data input/output interface. The device has a signal processing block provided on the substrate member and coupled to the input/output block. The device has a driver module provided on the substrate member and coupled to the signal processing block. In an example, the device has a driver interface provided on the substrate member and coupled to the driver module and configured to be coupled to a silicon photonics device. In an example, a control block is configured to receive and send instruction(s) in a digital format to the communication block and is configured to receive and send signals in an analog format to communicate with the silicon photonics device.
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公开(公告)号：US20180167146A1
公开(公告)日：2018-06-14
申请号：US15890616
申请日：2018-02-07
Applicant: INPHI CORPORATION
Inventor： Masaki KATO , Radhakrishnan L. NAGARAJAN
CPC classification number: H04B10/677 , G02B6/12007 , G02B6/12028 , G02B6/2813 , G02B6/29344 , G02B6/29352 , H04B10/69 , H04J14/02
Abstract: A silicon photonics based temperature-insensitive delay line interferometer (DLI). The DLI includes a first arm comprising a first length of a first material characterized by a first group index corresponding to a first phase delay to transfer a first light wave with a first peak frequency and a second arm comprising a second length of a second material characterized by a second group index corresponding to a second phase to transfer a second light wave with a second peak frequency with a time-delay difference relative to the first light wave. The first phase delay and the second phase delay are configured to change equally upon a change of temperature. The time-delay difference between the first light wave and the second light wave is set to be inversed value of a free spectral range (FSR) to align at least the first peak frequency to a channel of a designated frequency grid.
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公开(公告)号：US20180136395A1
公开(公告)日：2018-05-17
申请号：US15855655
申请日：2017-12-27
Applicant: INPHI Corporation
Inventor： Liang DING , Radhakrishnan L. NAGARAJAN
CPC classification number: G02B6/132 , G02B6/122 , G02B6/125 , G02B6/136 , G02B2006/12061
Abstract: An silicon photonics device of hybrid waveguides having a coupling interlayer with an accurately controlled thickness and a method of making the same. The device includes a first plurality of Si waveguides formed in a SOI substrate and a first layer of SiO2 overlying the first plurality of Si waveguides and a second plurality of Si3N4 waveguides formed on the first layer of SiO2. At least one Si3N4 waveguide is disposed partially overlapping with at least one of the first plurality Si waveguides in vertical direction separated by the first layer of SiO2 with a thickness controlled no greater than 90 nm. The device includes a second layer of SiO2 overlying the second plurality of Si3N4 waveguides. The method of accurately controlling the coupling interlayer SiO2 thickness includes a multilayer SiO2/Si3N4/SiO2 hard mask process for SiO2 etching and polishing as stopping and buffering layer as well as Si waveguide etching mask.
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公开(公告)号：US20170111110A1
公开(公告)日：2017-04-20
申请号：US15390340
申请日：2016-12-23
Applicant: INPHI CORPORATION
Inventor： Radhakrishnan L. NAGARAJAN
IPC: H04B10/038 , H04B10/80 , H04L1/00 , H04B10/50
CPC classification number: H04B10/038 , H01S5/0085 , H01S5/06825 , H01S5/4025 , H04B10/503 , H04B10/516 , H04B10/801 , H04J14/02 , H04L1/0042 , H04Q11/0003
Abstract: In an example, the present invention includes an integrated system on chip device. At least a pair of laser devices are associated with a channel and coupled to a switch to select one of the pair of laser devices to be coupled to an optical multiplexer to provide for a redundant laser device.
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