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    Overlapping spectrum amplification
    1.
    发明授权
    Overlapping spectrum amplification 有权

    公开(公告)号：US09998806B2

    公开(公告)日：2018-06-12

    申请号：US15348430

    申请日：2016-11-10

    Applicant: Google Inc.

    Inventor： Valey Kamalov ,  Vijayanand Vusirikala ,  Vinayak Dangui

    IPC: H04B10/00 ,  H04Q11/00 ,  H04B10/2513 ,  H04B10/2569

    CPC classification number: H04Q11/0062 ,  H04B10/2513 ,  H04B10/2569 ,  H04B10/2912 ,  H04B2210/258 ,  H04Q11/0005 ,  H04Q2011/0088

    Abstract: A method for overlapping spectrum amplification includes receiving an optical signal and splitting the optical signal into a first split signal having a first wavelength band and a second split signal having a second wavelength band. The splitting results in a band gap between the first wavelength band and the second wavelength band. The method further includes delaying the first split signal by a threshold period of time relative to the second split signal and combining the first split signal and the second split signal, resulting in a combined signal having the first wavelength band and the second wavelength band without the band gap therebetween. The path difference between the first split signal along the first signal path and the second split signal along the second signal path is within a threshold multipath interference compensation range.

    Transport of multiple asynchronous data streams using higher order modulation
    2.
    发明授权
    Transport of multiple asynchronous data streams using higher order modulation 有权
    使用更高阶调制传输多个异步数据流

    公开(公告)号：US08909064B2

    公开(公告)日：2014-12-09

    申请号：US14250969

    申请日：2014-04-11

    Applicant: Google Inc.

    Inventor： Bikash Koley ,  Vijayanand Vusirikala ,  Hong Liu

    IPC: H04B10/04 ,  H04J14/06 ,  H04Q11/00

    CPC classification number: H04Q11/0005 ,  H04B10/5051 ,  H04B10/5053 ,  H04B10/5161 ,  H04B10/541 ,  H04B10/5561 ,  H04J3/04 ,  H04J3/0602 ,  H04J3/0685 ,  H04J14/0279 ,  H04J14/0298 ,  H04J14/06 ,  H04L27/34 ,  H04L27/36 ,  H04Q2011/0045 ,  H04Q2213/13361

    Abstract: Aspects of the invention provide transmitters and receivers for managing multiple optical signals. High order modulation, such as phase and/or amplitude modulation, is used to achieve multiple bits per symbol by transporting multiple asynchronous data streams in an optical transport system. One or more supplemental multiplexing techniques such as time division multiplexing, polarization multiplexing and sub-carrier multiplexing may be used in conjunction with the high order modulation processing. This may be done in various combinations to realize a highly spectrally efficient multi-data stream transport mechanism. The system receives a number of asynchronous signals which are unframed and synchronized, and then reframed and tagged prior to the high order modulation. Differential encoding may also be performed. Upon reception of the multiplexed optical signal, the receiver circuitry may employ either direct detection without a local oscillator or coherent detection with a local oscillator.

    Abstract translation: 本发明的各方面提供用于管理多个光信号的发射机和接收机。 高阶调制（例如相位和/或幅度调制）用于通过在光学传输系统中传送多个异步数据流来实现每个符号的多个位。 可以结合高阶调制处理使用一个或多个补充复用技术，例如时分复用，偏振复用和副载波复用。 这可以以各种组合来实现，以实现高频谱效率的多数据流传输机制。 系统接收多个异步信号，这些异步信号是非帧和同步的，然后在高阶调制之前被重构和标记。 还可以执行差分编码。 在接收到复用的光信号时，接收机电路可以采用无本地振荡器的直接检测或与本地振荡器的相干检测。

    Overlapping Spectrum Amplification
    3.
    发明申请
    Overlapping Spectrum Amplification 有权

    公开(公告)号：US20180132016A1

    公开(公告)日：2018-05-10

    申请号：US15348430

    申请日：2016-11-10

    Applicant: Google Inc.

    Inventor： Valey Kamalov ,  Vijayanand Vusirikala ,  Vinayak Dangui

    IPC: H04Q11/00 ,  H04B10/2513 ,  H04B10/2569

    CPC classification number: H04Q11/0062 ,  H04B10/2513 ,  H04B10/2569 ,  H04B10/2912 ,  H04B2210/258 ,  H04Q11/0005 ,  H04Q2011/0088

    Abstract: A method for overlapping spectrum amplification includes receiving an optical signal and splitting the optical signal into a first split signal having a first wavelength band and a second split signal having a second wavelength band. The splitting results in a band gap between the first wavelength band and the second wavelength band. The method further includes delaying the first split signal by a threshold period of time relative to the second split signal and combining the first split signal and the second split signal, resulting in a combined signal having the first wavelength band and the second wavelength band without the band gap therebetween. The path difference between the first split signal along the first signal path and the second split signal along the second signal path is within a threshold multipath interference compensation range.

    Open, modular, and scalable optical line system
    5.
    发明授权
    Open, modular, and scalable optical line system 有权

    公开(公告)号：US10218454B2

    公开(公告)日：2019-02-26

    申请号：US15457520

    申请日：2017-03-13

    Applicant: Google Inc.

    Inventor： Vinayak Dangui ,  Vijayanand Vusirikala ,  Matthew Newland

    IPC: H04B10/00 ,  H04J14/02 ,  H04Q11/00 ,  H04J14/00

    Abstract: A reconfigurable optical add/drop multiplexer (ROADM) includes a plurality of interconnected ROADM blocks. Each ROADM block includes an ingress switchable-gain amplifier, an output power detector coupled to an output of the ingress switchable gain amplifier, and a wavelength-selective switch coupled to the output of the ingress switchable gain amplifier. Each ROADM block includes a plurality of add/drop blocks coupled to the wavelength-selective switches of the plurality of ROADM blocks. The ROADM includes a controller configured to receive an indication of an output signal power from the output power detector and adjust gain and equalization parameters of the ingress switchable-gain amplifier based on the received indication of the output signal power.

    SERVICE AND APPLICATION LAYER OPTIMIZATION USING VARIABLE RATE OPTICAL TRANSMISSION
    6.
    发明申请
    SERVICE AND APPLICATION LAYER OPTIMIZATION USING VARIABLE RATE OPTICAL TRANSMISSION 有权
    使用可变速率光传输的服务和应用层优化

    公开(公告)号：US20160080103A1

    公开(公告)日：2016-03-17

    申请号：US14947116

    申请日：2015-11-20

    Applicant: Google Inc.

    Inventor： Bikash Koley ,  Vijayanand Vusirikala ,  Hong Liu

    IPC: H04J14/02 ,  H04L12/859 ,  H04L12/851 ,  H04Q11/00

    CPC classification number: H04J14/026 ,  H04L5/0008 ,  H04L5/0028 ,  H04L25/0262 ,  H04L27/0008 ,  H04L41/5022 ,  H04L47/2425 ,  H04L47/2475 ,  H04Q11/0003 ,  H04Q11/0066 ,  H04Q2011/0084

    Abstract: Apparatus and methods are provided for application layer optimization in a modem data network. The optimization incorporates variable rate transmission across one or more optical data channels. Data throughput is maximized by enabling quality of service profiles on a per transmission channel basis. According to one aspect, a system is provided in which the application layer is aware of and controls the underlying transmission rate and quality of the transmission. This enables the system to fully utilize the transmission capacity of the channel. The application layer may map different applications to different transmission classes of service. The services can be classified based on data throughput rate, guaranteed error rates, latency and cost, among other criteria. This provides flexibility to the application layer to map some loss tolerant applications to a lower cost (per bit) transmission class.

    Abstract translation: 为调制解调器数据网络中的应用层优化提供了设备和方法。 优化结合了一个或多个光数据通道的可变速率传输。 通过在每个传输通道的基础上实现服务质量的质量来最大化数据吞吐量。 根据一个方面，提供了一种系统，其中应用层知道并控制传输的底层传输速率和质量。 这使得系统能够充分利用信道的传输容量。 应用层可以将不同的应用映射到不同的传输级别的服务。 服务可以根据数据吞吐率，保证的错误率，延迟和成本以及其他标准进行分类。 这为应用层提供了灵活性，将一些容错应用映射到较低成本（每位）传输类。

    TRANSPORT OF MULTIPLE ASYNCHRONOUS DATA STREAMS USING HIGHER ORDER MODULATION
    7.
    发明申请
    TRANSPORT OF MULTIPLE ASYNCHRONOUS DATA STREAMS USING HIGHER ORDER MODULATION 有权
    使用更高阶调制的多个非同步数据流的传输

    公开(公告)号：US20140219655A1

    公开(公告)日：2014-08-07

    申请号：US14250969

    申请日：2014-04-11

    Applicant: Google Inc.

    Inventor： Bikash Koley ,  Vijayanand Vusirikala ,  Hong Liu

    IPC: H04Q11/00 ,  H04J14/06

    CPC classification number: H04Q11/0005 ,  H04B10/5051 ,  H04B10/5053 ,  H04B10/5161 ,  H04B10/541 ,  H04B10/5561 ,  H04J3/04 ,  H04J3/0602 ,  H04J3/0685 ,  H04J14/0279 ,  H04J14/0298 ,  H04J14/06 ,  H04L27/34 ,  H04L27/36 ,  H04Q2011/0045 ,  H04Q2213/13361

    Abstract: Aspects of the invention provide transmitters and receivers for managing multiple optical signals. High order modulation, such as phase and/or amplitude modulation, is used to achieve multiple bits per symbol by transporting multiple asynchronous data streams in an optical transport system. One or more supplemental multiplexing techniques such as time division multiplexing, polarization multiplexing and sub-carrier multiplexing may be used in conjunction with the high order modulation processing. This may be done in various combinations to realize a highly spectrally efficient multi-data stream transport mechanism. The system receives a number of asynchronous signals which are unframed and synchronized, and then reframed and tagged prior to the high order modulation. Differential encoding may also be performed. Upon reception of the multiplexed optical signal, the receiver circuitry may employ either direct detection without a local oscillator or coherent detection with a local oscillator.

    Abstract translation: 本发明的各方面提供用于管理多个光信号的发射机和接收机。 高阶调制（例如相位和/或幅度调制）用于通过在光学传输系统中传送多个异步数据流来实现每个符号的多个位。 可以结合高阶调制处理使用一个或多个补充复用技术，例如时分复用，偏振复用和副载波复用。 这可以以各种组合来实现，以实现高频谱效率的多数据流传输机制。 系统接收多个异步信号，这些异步信号是非帧和同步的，然后在高阶调制之前被重构和标记。 也可以执行差分编码。 在接收到复用的光信号时，接收机电路可以采用无本地振荡器的直接检测或与本地振荡器的相干检测。

    OPEN, MODULAR, AND SCALABLE OPTICAL LINE SYSTEM
    8.
    发明申请
    OPEN, MODULAR, AND SCALABLE OPTICAL LINE SYSTEM 审中-公开

    公开(公告)号：US20180262292A1

    公开(公告)日：2018-09-13

    申请号：US15457520

    申请日：2017-03-13

    Applicant: Google Inc.

    Inventor： Vinayak Dangui ,  Vijayanand Vusirikala ,  Matthew Newland

    IPC: H04J14/02 ,  H04Q11/00

    CPC classification number: H04J14/0212 ,  H04B10/2916 ,  H04B10/2941 ,  H04J14/021 ,  H04J14/0221 ,  H04Q11/0005 ,  H04Q2011/0016

    Abstract: A reconfigurable optical add/drop multiplexer (ROADM) includes a plurality of interconnected ROADM blocks. Each ROADM block includes an ingress switchable-gain amplifier, an output power detector coupled to an output of the ingress switchable gain amplifier, and a wavelength-selective switch coupled to the output of the ingress switchable gain amplifier. Each ROADM block includes a plurality of add/drop blocks coupled to the wavelength-selective switches of the plurality of ROADM blocks. The ROADM includes a controller configured to receive an indication of an output signal power from the output power detector and adjust gain and equalization parameters of the ingress switchable-gain amplifier based on the received indication of the output signal power.

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