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    Testing of Transmitters for Communication Links by Software Simulation of Reference Channel and/or Reference Receiver
    2.
    发明申请
    Testing of Transmitters for Communication Links by Software Simulation of Reference Channel and/or Reference Receiver 审中-公开
    通过参考信道和/或参考接收机的软件仿真测试通信链路的发射机

    公开(公告)号：US20140186027A1

    公开(公告)日：2014-07-03

    申请号：US14134997

    申请日：2013-12-19

    Applicant: CLARIPHY COMMUNICATIONS, INC.

    Inventor： Thomas A. Lindsay

    IPC: H04B10/073

    CPC classification number: H04B10/0731 ,  H04B10/0799

    Abstract: A transmitter for a communications link is tested by using a (software) simulation of a reference channel and/or a reference receiver to test the transmitter. In one embodiment for optical fiber communications links, a data test pattern is applied to the transmitter under test and the resulting optical output is captured, for example by a sampling oscilloscope. The captured waveform is subsequently processed by the software simulation, in order to simulate propagation of the optical signal through the reference channel and/or reference receiver. A performance metric for the transmitter is calculated based on the processed waveform.

    Abstract translation: 用于通信链路的发射机通过使用参考信道和/或参考接收机的（软件）模拟来测试发射机。 在光纤通信链路的一个实施例中，将数据测试模式应用于被测发射机，并且例如通过采样示波器捕获所得光输出。 捕获的波形随后通过软件仿真处理，以便模拟通过参考信道和/或参考接收机的光信号的传播。 基于已处理的波形计算发射机的性能指标。

    Apparatus and methods for active termination of digital-to-analog converters
    3.
    发明授权
    Apparatus and methods for active termination of digital-to-analog converters 有权
    用于数模转换器的主动终端的装置和方法

    公开(公告)号：US09319061B1

    公开(公告)日：2016-04-19

    申请号：US14575864

    申请日：2014-12-18

    Applicant: ClariPhy Communications, Inc.

    Inventor： Morteza Azarmnia ,  Vadim Gutnik ,  William Vanscheik

    IPC: H03M1/66 ,  H03M1/00 ,  H03K19/00

    CPC classification number: H03M1/66 ,  H03M1/0609

    Abstract: Apparatus and methods for digital-to-analog conversion are disclosed. In one embodiment, an electronic system includes a bias circuit and a digital-to-analog converter (DAC) including an input that receives a digital input signal and an output that drives a transmission line. The digital input signal can be used to control a magnitude and polarity of an output current of the DAC. The DAC further includes one or more p-type metal oxide semiconductor (PMOS) termination transistors that receive a first bias voltage from the bias circuit and one or more n-type metal oxide semiconductor (NMOS) termination transistors that receive a second bias voltage from the bias circuit. The bias circuit controls the voltage levels of the first and second bias voltages to control the termination transistors' small signal resistance to actively terminate the DAC's output.

    Abstract translation: 公开了用于数模转换的装置和方法。 在一个实施例中，电子系统包括偏置电路和数模转换器（DAC），数字 - 模拟转换器（DAC）包括接收数字输入信号的输入和驱动传输线的输出。 数字输入信号可用于控制DAC的输出电流的幅度和极性。 DAC还包括从偏置电路接收第一偏置电压的一个或多个p型金属氧化物半导体（PMOS）终端晶体管，以及一个或多个从第二偏置电压接收第二偏置电压的n型金属氧化物半导体（NMOS） 偏置电路。 偏置电路控制第一和第二偏置电压的电压电平以控制端接晶体管的小信号电阻以主动地终止DAC的输出。

    Coherent optical transceiver with programmable application modes
    4.
    发明授权
    Coherent optical transceiver with programmable application modes 有权
    具有可编程应用模式的相干光收发器

    公开(公告)号：US09071364B1

    公开(公告)日：2015-06-30

    申请号：US13655302

    申请日：2012-10-18

    Applicant: ClariPhy Communications, Inc.

    Inventor： Paul Voois ,  Diego Ernesto Crivelli ,  Ramiro Rogelio Lopez ,  Jorge Manuel Finochietto ,  Oscar Ernesto Agazzi

    IPC: H04B10/04 ,  H04B10/00 ,  H04B10/12 ,  H04B10/58 ,  H04B10/2507 ,  H04B10/40

    CPC classification number: H04B10/40 ,  H04B10/2507 ,  H04B10/58

    Abstract: An optical communication system provides coherent optical transmission for metro applications. Relative to conventional solutions, the optical communication system can be implemented with reduced cost and can operate with reduced power consumption, while maintaining high data rate performance (e.g., 100 G). Furthermore, a programmable transceiver enables compatibility with a range of different types of optical networks having varying performance and power tradeoffs. In one embodiment, the optical communication system uses 100 Gb/s dual-polarization 16-point quadrature amplitude modulation (DP-16QAM) with non-linear pre-compensation of Indium Phosphide (InP) optics for low power consumption.

    Abstract translation: 光通信系统为城域应用提供相干光传输。 相对于传统解决方案，光通信系统可以以降低的成本实现，并且可以在降低功耗的情况下工作，同时保持高数据速率性能（例如，100G）。 此外，可编程收发器能够与具有不同性能和功率权衡的不同类型的光网络兼容。 在一个实施例中，光通信系统使用具有用于低功耗的铟磷化物（InP）光学器件的非线性预补偿的100Gb / s双极化16点正交幅度调制（DP-16QAM）。

    Skew compensation based on equalizer coefficients
    5.
    发明授权
    Skew compensation based on equalizer coefficients 有权
    基于均衡器系数的偏移补偿

    公开(公告)号：US09036751B1

    公开(公告)日：2015-05-19

    申请号：US13744205

    申请日：2013-01-17

    Applicant: ClariPhy Communications, Inc.

    Inventor： Shih Cheng Wang ,  Martin Serra ,  Cesar Sanchez Peñak ,  Mario Rafael Hueda ,  Alfredo Taddei ,  Diego Ernesto Crivelli ,  Hugo Santiago Carrer ,  Oscar Ernesto Agazzi

    IPC: H04B1/10 ,  H04L27/01

    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.

    Abstract translation: 接收机应用校准方法来补偿输入通道之间的偏斜。 通过观察基于多通道输入信号的时变特性来调整系数的自适应均衡器的系数来估计接收器偏移。 通过对不同通道的采样时钟的相位进行编程来补偿接收器偏移。 此外，在接收机的实时操作期间，执行信道诊断以使用频率平均或极化平均方法基于均衡器系数自动估计差分组延迟和/或其他信道特性。 还可以使用成帧器信息来估计作为符号率的整数倍的差分组延迟。 另外，当基于信道诊断信息检测到实质的信号劣化时，可以执行DSP复位。

    Systems and methods for biasing optical modulating devices
    9.
    发明授权
    Systems and methods for biasing optical modulating devices 有权
    用于偏置光调制装置的系统和方法

    公开(公告)号：US09496962B1

    公开(公告)日：2016-11-15

    申请号：US14316566

    申请日：2014-06-26

    Applicant: ClariPhy Communications, Inc.

    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.

    Abstract translation: 本文描述的系统和方法包括用于控制提供给光调制装置的偏置电压的方法和系统。 光调制装置被偏置在与装置的零点不同的偏置点处，使得由于有限消光比而导致的对接收光功率的偏移减小。

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