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170 条记录 (耗时 0.043 秒)

    Subcarrier Based Data Center Network Architecture
    71.
    发明公开
    Subcarrier Based Data Center Network Architecture 审中-公开

    公开(公告)号：US20240283558A1

    公开(公告)日：2024-08-22

    申请号：US18516909

    申请日：2023-11-21

    申请人： Stuart Elby ,  David F. Welch

    发明人： Stuart Elby ,  David F. Welch

    IPC分类号： H04J14/02 ,  H04B10/50 ,  H04B10/61

    CPC分类号： H04J14/0298 ,  H04B10/506 ,  H04B10/61

    摘要： Methods, systems, and apparatus, including computer programs encoded on computer storage media, for generating, transmitting, directing, receiving, and processing optical subcarriers. In some implementations, a system includes a Tier 1 switch that supplies a plurality of data channels; a transmitter that receives the plurality of data channels, the transmitter including an optical modulator that supplies a plurality of optical subcarriers based on the plurality of data channels; an optical platform that receives the plurality of optical subcarriers, the optical platform having a plurality of outputs, each of which supplying at least one of the plurality of subcarriers; a plurality of receivers, each receiving one or more of the plurality of optical subcarriers and supplying one or more of the plurality of data channels; and a plurality of servers, each of which receiving one or more of the plurality of data channels.

    Wavelength division multiplexed optical communication system having variable channel spacings
    73.
    发明授权
    Wavelength division multiplexed optical communication system having variable channel spacings 有权
    具有可变通道间隔的波分复用光通信系统

    公开(公告)号：US08768177B2

    公开(公告)日：2014-07-01

    申请号：US12897784

    申请日：2010-10-05

    申请人： Kuang-Tsan Wu ,  John D. McNicol ,  David F. Welch ,  Stephen G. Grubb ,  Pierre Mertz

    发明人： Kuang-Tsan Wu ,  John D. McNicol ,  David F. Welch ,  Stephen G. Grubb ,  Pierre Mertz

    IPC分类号： H04B10/58

    CPC分类号： H04J14/06 ,  H04J14/026 ,  H04L1/007

    摘要： Consistent with the present disclosure, data, in digital form, is received by a transmit nodes of an optical communication, and converted to analog signal by a digital-to-analog converter (DAC) to drive a modulator. The modulator, in turn, modulates light at one of a plurality of wavelengths in accordance with the received data. The modulated light is then transmitted over an optical communication path to a receive node. At the receive node, the modulated optical signal, as well as other modulated optical signals are supplied to a photodetector circuit, which receives additional light at one of the optical signal wavelengths from a local oscillator laser. An analog-to-digital converter (ADC) is provided in the receive node to convert the electrical signals output from the photodetector into digital form. The output from the ADC is then filtered in the electrical domain, such that optical demultiplexing of individual channels is unnecessary.

    摘要翻译： 与本公开一致，数字形式的数据由光通信的发射节点接收，并由数模转换器（DAC）转换为模拟信号以驱动调制器。 调制器又根据接收的数据调制多个波长中的一个波长的光。 然后将调制的光通过光通信路径传输到接收节点。 在接收节点处，调制的光信号以及其它调制的光信号被提供给光电检测器电路，光电检测器电路从本地振荡器激光器接收来自光信号波长之一的附加光。 在接收节点中提供模数转换器（ADC），以将从光电检测器输出的电信号转换为数字形式。 然后在电域中对来自ADC的输出进行滤波，使得各个信道的光解复用是不必要的。

    Multiplexer and Modulation Arrangements for Multi-Carrier Optical Modems
    74.
    发明申请
    Multiplexer and Modulation Arrangements for Multi-Carrier Optical Modems 有权
    多载波调制解调器的多路复用器和调制方案

    公开(公告)号：US20120251119A1

    公开(公告)日：2012-10-04

    申请号：US13078888

    申请日：2011-04-01

    申请人： John D. McNicol ,  Matthew L. Mitchell ,  David F. Welch

    发明人： John D. McNicol ,  Matthew L. Mitchell ,  David F. Welch

    IPC分类号： H04J14/02

    CPC分类号： H04J14/02 ,  H04J14/0256 ,  H04J14/026 ,  H04J14/06

    摘要： Consistent with the present disclosure, data, in digital form, is received by a transmit node of an optical communication, and converted to analog signal by a digital-to-analog converter (DAC) to drive a modulator. The modulator, in turn, modulates light at one of a plurality of wavelengths in accordance with the received data forming a plurality of corresponding carriers. The plurality of carriers are then optically combined with a fixed spacing combiner to form a superchannel of a fixed capacity. Accordingly, the number of carriers are selected according to a modulation format and symbol rate to realize the fixed capacity, for example. The superchannel is then transmitted over an optical communication path to a receive node. At the receive node, the superchannel is optically demultiplexed from a plurality of other superchannels. The plurality of carriers are then supplied to a photodetector circuit, which receives additional light at one of the optical signal carrier wavelengths from a local oscillator laser. An analog-to-digital converter (ADC) is provided in the receive node to convert the electrical signals output from the photodetector into digital form. The output from the ADC is then filtered in the electrical domain, such that optical demultiplexing of the carriers is unnecessary.

    摘要翻译： 根据本公开，数字形式的数据由光通信的发送节点接收，并由数模转换器（DAC）转换成模拟信号以驱动调制器。 调制器又根据形成多个相应载波的接收数据调制多个波长中的一个波长的光。 然后将多个载波与固定间隔组合器光学组合以形成固定容量的超级通道。 因此，例如，根据调制格式和符号率来选择载波的数量以实现固定容量。 然后，超信道通过光通信路径传输到接收节点。 在接收节点处，超级信道从多个其他超级信道被光解复用。 然后将多个载波提供给光电检测器电路，该电路从本地振荡器激光器接收来自光信号载波波长的其中一个附加光。 在接收节点中提供模数转换器（ADC），以将从光电检测器输出的电信号转换为数字形式。 然后在电域中对ADC的输出进行滤波，使得载波的光解复用是不必要的。

    TRANSCEIVER PHTONIC INTEGRATED CIRCUIT
    77.
    发明申请
    TRANSCEIVER PHTONIC INTEGRATED CIRCUIT 有权
    收发器波导集成电路

    公开(公告)号：US20110243556A1

    公开(公告)日：2011-10-06

    申请号：US12753833

    申请日：2010-04-02

    申请人： Radhakrishnan L. Nagarajan ,  Masaki Kato ,  Fred A. Kish, JR. ,  David F. Welch ,  Charles H. Joyner

    发明人： Radhakrishnan L. Nagarajan ,  Masaki Kato ,  Fred A. Kish, JR. ,  David F. Welch ,  Charles H. Joyner

    IPC分类号： H04J14/00

    CPC分类号： H04J14/02 ,  H04B10/40 ,  H04J14/06

    摘要： The present invention provides for a transceiver comprising a transmitter portion and a receiver portion. The transmitter portion includes a laser, the laser providing an optical signal having one of a plurality of wavelengths. The optical signal from the laser is modulated to create a first wavelength-division multiplexed signal at an output of the transceiver. The optical signal from the laser is also used by a demultiplexer to demultiplexer a second wavelength-division multiplexed signal at an input of the transceiver. The use of the optical signal from the laser in both modulation and demodulation of wavelength-division multiplexed signals results in a transceiver having fewer discrete components resulting in a compact design and reduced costs.

    摘要翻译： 本发明提供一种收发器，包括发射机部分和接收机部分。 发射机部分包括激光器，激光器提供具有多个波长中的一个的光信号。 来自激光器的光信号被调制以在收发器的输出处产生第一波分复用信号。 来自激光器的光信号也被解复用器使用，以在收发器的输入端解复用第二波分复用信号。 在波分复用信号的调制和解调中使用来自激光器的光信号导致具有较少分立组件的收发器，导致紧凑的设计并降低了成本。