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    Driver module for mach zehnder modulator
    62.
    发明授权
    Driver module for mach zehnder modulator 有权

    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

    IPC: H04B10/00 ,  H04B10/524 ,  H03M1/68 ,  G02F1/225 ,  G02F1/01 ,  G02F1/21

    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.

    Package structure for photonic transceiving device
    63.
    发明授权
    Package structure for photonic transceiving device 有权

    公开(公告)号：US09759877B2

    公开(公告)日：2017-09-12

    申请号：US15375042

    申请日：2016-12-09

    Applicant: INPHI CORPORATION

    Inventor： Radhakrishnan L. Nagarajan ,  Peng-Chih Li ,  Masaki Kato

    IPC: H04B10/00 ,  G02B6/42 ,  H04B10/40

    CPC classification number: G02B6/4246 ,  G02B6/421 ,  G02B6/4215 ,  G02B6/4249 ,  G02B6/4256 ,  G02B6/4278 ,  G02B6/428 ,  G02B6/4292 ,  H04B10/40 ,  H04B10/516

    Abstract: A photonic transceiver apparatus in Quad Small Form-factor Pluggable (QSFP) package. The apparatus includes a case having a base member, two partial side members, and a lid member to provide a spatial volume with an opening at a back end of the base member. Additionally, the apparatus includes a printed circuit board (PCB), installed inside the spatial volume over the base member having a pluggable electrical connector at the back end. Further, the apparatus includes multiple optical transmitting devices in mini-transmit-optical-sub-assembly package, each being mounted on a common support structure and having a laser output port in reversed orientation toward the back end. Furthermore, the apparatus includes a silicon photonics chip, including a fiber-to-silicon attachment module, mounted on the PCB and coupled to a modulation driver module and a trans-impedance amplifier module. Moreover, the apparatus includes a pair of optical input/output ports being back connected to the fiber-to-silicon attachment module.

    56 Gbps PAM4 driver module for Mach Zehnder modulator
    64.
    发明授权
    56 Gbps PAM4 driver module for Mach Zehnder modulator 有权

    公开(公告)号：US09742498B1

    公开(公告)日：2017-08-22

    申请号：US15061918

    申请日：2016-03-04

    Applicant: INPHI CORPORATION

    Inventor： Radhakrishnan L. Nagarajan

    IPC: H04B10/25 ,  H04B10/516

    CPC classification number: H04B10/5161 ,  G02F1/0123 ,  G02F1/2255 ,  G02F1/2257 ,  G02F2001/212 ,  H03M1/682 ,  H04B10/524 ,  H04B10/541

    Abstract: A PAM4 driver with at least 56 Gbps speed for driving a Mach-Zehnder modulator. The PAM4 driver is configured as 2-bit CMOS digital-to-analog convertor including a drive control module for receiving a pair of incoming differential digital data and generating a first processed reference signal and a second processed reference signal. The PAM4 driver further includes a mirrored buffer circuit to produce two sets of four voltage levels. Furthermore, the PAM4 driver includes a decoder module controlled by a switch bias control module configured to decode each of the two sets of four voltage levels for generating a first output signal and a complementary second out signal with 4 independently adjustable analog levels for driving the Mach-Zehnder modulator with close ended termination resistor.

    Driver module for Mach Zehnder modulator
    65.
    发明授权
    Driver module for Mach Zehnder modulator 有权

    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.

    Photonic transceiving device package structure
    67.
    发明授权
    Photonic transceiving device package structure 有权
    光子收发器封装结构

    公开(公告)号：US09496959B1

    公开(公告)日：2016-11-15

    申请号：US14789290

    申请日：2015-07-01

    Applicant: Inphi Corporation

    Inventor： Radhakrishnan L. Nagarajan ,  Peng-Chih Li ,  Masaki Kato

    IPC: H04B10/00 ,  G02B6/12 ,  H04B10/40 ,  H04J14/02 ,  H04B10/516

    CPC classification number: G02B6/4257 ,  G02B6/30 ,  G02B6/421 ,  G02B6/4243 ,  G02B6/4246 ,  G02B6/4251 ,  G02B6/4271 ,  G02B6/428 ,  G02B6/4284 ,  G02B6/4286 ,  G02B6/4292 ,  G02F1/2255 ,  G02F2001/212 ,  H04B10/40 ,  H04B10/516 ,  H04J14/02

    Abstract: The apparatus includes a case having a base member, two partial side members, and a lid member to provide a spatial volume with an opening at a back end of the base member. Additionally, the apparatus includes a PCB installed inside the spatial volume over the base member with a pluggable connector at the back end. The apparatus includes one or more optical transmitting devices in transmit-optical-sub-assembly package, each being mounted upside-down on the PCB and including a built-in TEC module in contact with the lid member and a laser output port aiming toward the back end. Furthermore, the apparatus includes a silicon photonics chip including a fiber-to-silicon attachment module, mounted on the PCB and coupled to a modulation driver module and a trans-impedance-amplifier module. Moreover, the apparatus includes an optical input port and output port being back connected to the fiber-to-silicon attachment module.

    Abstract translation: 该装置包括具有底座构件，两个部分侧构件和盖构件的壳体，以在基座构件的后端提供具有开口的空间体积。 此外，该设备包括安装在基座部件上方的空间体积内的PCB，后端具有可插拔连接器。 该装置包括一个或多个透射 - 光学 - 组件封装中的光学传输装置，它们分别安装在PCB上，并且包括与盖构件接触的内置TEC模块和朝向 后端 此外，该装置包括硅光子芯片，其包括安装在PCB上的光纤至硅附着模块，并耦合到调制驱动器模块和跨阻抗放大器模块。 此外，该装置包括光输入端口和输出端口，其被连接到光纤到硅附接模块。

    Built-in redundancy scheme for communication system on chip
    69.
    发明授权
    Built-in redundancy scheme for communication system on chip 有权
    内置冗余方案，用于片上通信系统

    公开(公告)号：US09425903B1

    公开(公告)日：2016-08-23

    申请号：US14316551

    申请日：2014-06-26

    Applicant: INPHI CORPORATION

    Inventor： Radhakrishnan L. Nagarajan

    IPC: H04B10/80 ,  H04B10/40 ,  H04B10/556 ,  H04B10/54 ,  H04B10/516 ,  H04B10/69 ,  H04J14/02

    CPC classification number: H04B10/801 ,  G02B6/00 ,  H04B10/40 ,  H04B10/5161 ,  H04B10/541 ,  H04B10/5561 ,  H04B10/69 ,  H04J14/02 ,  H04L69/324

    Abstract: In an example, the present invention includes an integrated system on chip device. The device has a redundancy block is configured to add at least redundancy bit as a function of one or more data bits associated with data for data error detection and correction data. In an example, the driver module is coupled to the signal processing blocking using a uni-directional multi-lane bus configured with N lanes, whereupon N is greater than M such that a difference between N and M represents a redundant lane or lanes. The device also has a mapping block configured to associate the M lanes to a plurality of selected laser devices for a silicon photonics device.

    Abstract translation: 在一个示例中，本发明包括集成片上系统设备。 该设备具有冗余块，被配置为至少将冗余位添加为与用于数据错误检测和校正数据的数据相关联的一个或多个数据位的函数。 在一个示例中，使用配置有N个通道的单向多通道总线将驱动器模块耦合到信号处理阻塞，因此N大于M，使得N和M之间的差异表示冗余车道或车道。 该装置还具有配置成将M通道与硅光子器件的多个选定的激光装置相关联的映射块。

    Off quadrature biasing of mach zehnder modulator for improved OSNR performance
    70.
    发明授权
    Off quadrature biasing of mach zehnder modulator for improved OSNR performance 有权
    马赫兹恩调制器的正交偏置关闭，以提高OSNR性能

    公开(公告)号：US09323128B1

    公开(公告)日：2016-04-26

    申请号：US14706908

    申请日：2015-05-07

    Applicant: Inphi Corporation

    Inventor： Radhakrishnan L. Nagarajan ,  Hari Shankar ,  Masaki Kato ,  Yang Fu

    IPC: G02F1/01 ,  G02B6/12 ,  G02F1/225 ,  H01S3/067 ,  G02F1/21 ,  H04B10/50 ,  G02F1/025

    CPC classification number: G02F1/0123 ,  G02B6/12007 ,  G02F1/0147 ,  G02F1/025 ,  G02F1/225 ,  G02F1/2255 ,  G02F2001/212 ,  G02F2202/105 ,  H01S3/06754 ,  H01S3/1608 ,  H01S5/0085 ,  H01S5/0687 ,  H01S5/4012 ,  H01S5/4087 ,  H04B10/505 ,  H04B10/50575

    Abstract: An integrated optical modulator device. The device can include a driver module coupled to an optical modulator. The optical modulator is characterized by a raised cosine transfer function. This optical modulator can be coupled to a light source and a bias control module, which is configured to apply an off-quadrature bias to the optical modulator. This bias can be accomplished by applying an inverse of the modulator transfer function to the optical modulator in order to minimize a noise variance. This compression function can result in an optimized increased top eye opening for a signal associated with the optical modulator. Furthermore, the optical modulator can be coupled to an EDFA (Erbium Doped Fiber Amplifier) that is coupled to a filter coupled an O/E (Optical-to-Electrical) receiver.

    Abstract translation: 集成光调制器装置。 该装置可以包括耦合到光调制器的驱动器模块。 光调制器的特征在于升高的余弦传递函数。 该光调制器可以耦合到光源和偏置控制模块，该偏置控制模块被配置为向光调制器施加非正交偏置。 可以通过将调制器传递函数的反相应用于光调制器来实现该偏置，以便最小化噪声方差。 该压缩功能可以导致用于与光学调制器相关联的信号的优化的增加的顶部眼睛开度。 此外，光调制器可以耦合到耦合到耦合到O / E（光 - 电）接收器的滤波器的EDFA（掺铒光纤放大器）。

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