公开(公告)号：WO2018089123A1

公开(公告)日：2018-05-17

申请号：PCT/US2017/053700

申请日：2017-09-27

Applicant: GOOGLE INC.

Inventor： KAMALOV, Valey ,  VUSIRIKALA, Vijayanand ,  DANGUI, Vinayak

IPC: H04B10/291

Abstract: A method (400) for overlapping spectrum amplification includes receiving an optical signal (102) and splitting the optical signal into a first split signal (102a) having a first wavelength band (λ a ) and a second split signal (102b) having a second wavelength band (λ b ). The splitting results in a band gap (G) 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 (104) 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 (P1) and the second split signal along the second signal path (P2) is within a threshold multipath interference compensation range.

Abstract translation: 一种用于重叠频谱放大的方法（400）包括：接收光信号（102）;以及将光信号分离成具有第一波长带（λsub <λ<1）的第一分裂信号（102a） 和具有第二波段（λb）的第二分裂信号（102b）。 分裂导致第一波长带和第二波长带之间的带隙（G）。 该方法进一步包括相对于第二分离信号将第一分离信号延迟阈值时间段并且组合第一分离信号和第二分离信号，产生具有第一波长带和第二波长的组合信号（104） 其间没有带隙。 沿着第一信号路径（P1）的第一分离信号和沿着第二信号路径（P2）的第二分离信号之间的路径差在阈值多径干扰补偿范围内。

公开(公告)号：WO2013074349A1

公开(公告)日：2013-05-23

申请号：PCT/US2012/063860

申请日：2012-11-07

Applicant: GOOGLE INC.

Inventor： KOLEY, Bikash ,  VUSIRIKALA, Vijayanand ,  LIU, Hong

IPC: H04L29/08 ,  H04L12/56 ,  H04J14/02

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 modern 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 (200) is provided in which the application layer is aware of and controls the underlying transmission rate (212) and quality (214) 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: 为现代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（200），其中应用层知道并控制传输的底层传输速率（212）和质量（214）。 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。

公开(公告)号：WO2012145165A2

公开(公告)日：2012-10-26

申请号：PCT/US2012/032055

申请日：2012-04-04

Applicant: GOOGLE INC. ,  KOLEY, Bikash ,  VUSIRIKALA, Vijayanand ,  LIU, Hong

Inventor： KOLEY, Bikash ,  VUSIRIKALA, Vijayanand ,  LIU, Hong

IPC: H04J14/06 ,  H04J14/08 ,  H04J14/02

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 (1102) and receivers (1104) 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 (100). 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 (102) and synchronized (104), and then reframed (106) and tagged (108) prior to the high order modulation (112). Differential encoding (110) may also be performed. Upon reception of the multiplexed optical signal, the receiver circuitry (116) 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了用于管理多个光信号的发射机（1102）和接收机（1104）。 使用诸如相位和/或幅度调制的高阶调制来通过在光学传输系统（100）中传送多个异步数据流来实现每个符号的多个比特。 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（102）同步（104），然后在高阶调制之前被重构（106）和标记（108）（112）。 还可以执行差分编码（110）。 在接收到复用的光信号之后，接收机电路（116）可以采用无本地振荡器的直接检测或本地振荡器的相干检测。