公开(公告)号：US09628180B2

公开(公告)日：2017-04-18

申请号：US14231418

申请日：2014-03-31

Applicant: Infinera Corporation

Inventor： Han H. Sun ,  Kuang-Tsan Wu ,  David J. Krause ,  Yuejian Wu

IPC: H04B10/00 ,  H04B10/2513 ,  H04B10/61

CPC classification number: H04B10/25137 ,  H04B10/6161 ,  H04B10/6162

Abstract: A system may include an optical transmitter and an optical receiver. The optical transmitter may generate optical signals associated with sub-carriers, and may provide the optical signals via an optical link. The optical receiver may receive the optical signals via the optical link, and may generate samples based on the optical signals. The samples may be associated with the sub-carriers. The optical receiver may combine the samples to form a time domain sample vector having a particular size, and may generate a frequency domain sample vector, having the particular size, based on the time domain sample vector. The optical receiver may demultiplex the frequency domain sample vector to generate domain sample vectors corresponding to the sub-carriers. The optical receiver may process the frequency domain sample vectors to generate equalized frequency domain sample vectors, and may output the equalized frequency domain sample vectors.

公开(公告)号：US09537577B2

公开(公告)日：2017-01-03

申请号：US14514840

申请日：2014-10-15

Applicant: Infinera Corporation

Inventor： Jeffrey T. Rahn ,  David J. Krause

IPC: H04B10/572 ,  H04J14/02 ,  G02B6/12 ,  H04B10/00

CPC classification number: H04B10/572 ,  H04J14/02 ,  H04J14/0256

Abstract: A device may insert a set of tones into a transmitter signal at a set of frequency offsets from a set of transmitter channels associated with a set of transmitter channel wavelengths. The set of transmitter channels may include a first channel being associated with a first quantity of bandwidth and a second channel associated with a second quantity of bandwidth. The first quantity of bandwidth may be different from the second quantity of bandwidth. The device may repeatedly adjust the transmitter signal to align the set of transmitter channel wavelengths based on a set of observed responses to the set of tones, generated based on the transmitter signal passing through an optical filter, failing to match a set of expected responses.

Abstract translation: 设备可以以与一组发射机信道波长相关联的一组发射机信道的一组频率偏移将一组音调插入到发射机信号中。 所述发射机信道集合可以包括与第一数量带宽相关联的第一信道和与第二数量带宽相关联的第二信道。 第一数量的带宽可能与第二数量的带宽不同。 基于对基于通过光学滤波器的发射机信号而产生的对一组音调的观察到的响应的集合，设备可以重复地调整发射机信号以对准发射机信道波长的集合，不能匹配一组预期响应。

公开(公告)号：US09312962B2

公开(公告)日：2016-04-12

申请号：US13675246

申请日：2012-11-13

Applicant: Infinera Corporation

Inventor： David J. Krause ,  Damien Lambert ,  Masaki Kato ,  Vikrant Lal ,  Radhakrishnan L. Nagarajan ,  Mehrdad Ziari ,  Fred A. Kish, Jr. ,  John D. McNicol ,  Han Henry Sun ,  Kuang-Tsan Wu

IPC: H04B10/50 ,  H04B10/516 ,  H04B10/54 ,  H04B10/548

CPC classification number: H04B10/5161 ,  H04B10/5051 ,  H04B10/5053 ,  H04B10/54 ,  H04B10/548

Abstract: An optical modulator includes a splitter, phase modulators, amplitude modulators, intensity modulators, and a combiner. The splitter is configured to receive light, and split the light into portions of the light. Each of the phase modulators is configured to receive a corresponding one of the portions of the light, and modulate a phase of the portion of the light to provide a phase-modulated signal. Each of the amplitude modulators is configured to receive a corresponding one of the phase-modulated signals, and modulate an amplitude of the phase-modulated signal to provide an amplitude-modulated signal. Each of the intensity modulators is configured to receive a corresponding one of the amplitude-modulated signals, and modulate an intensity of the amplitude-modulated signals to provide an intensity-modulated signal. The combiner is configured to receive the intensity-modulated signals, combine the intensity-modulated signals into a combined signal, and output the combined signal.

Abstract translation: 光调制器包括分路器，相位调制器，幅度调制器，强度调制器和组合器。 分离器被配置为接收光，并将光分解成光的一部分。 每个相位调制器被配置为接收光的对应的一部分，并调制该部分光的相位以提供相位调制信号。 每个幅度调制器被配置为接收对应的一个相位调制信号，并且调制相位调制信号的幅度以提供幅度调制信号。 每个强度调制器被配置为接收相应的幅度调制信号之一，并且调制幅度调制信号的强度以提供强度调制信号。 组合器被配置为接收强度调制信号，将强度调制信号组合成组合信号，并输出组合信号。

公开(公告)号：US08971719B2

公开(公告)日：2015-03-03

申请号：US13725220

申请日：2012-12-21

Applicant: Infinera Corporation

Inventor： Pierre Herve Mertz ,  David J. Krause ,  Han Henry Sun

IPC: H04B10/00 ,  H04B10/04 ,  H04B10/12 ,  H04B10/556

CPC classification number: H04B10/5561 ,  H04B10/2557 ,  H04B10/548 ,  H04B10/6163

Abstract: An optical system may have an optical transmitter including a digital signal processor to receive a signal channel, add data corresponding to a pilot tone, generate a digital signal associated with the signal channel and including the pilot tone, and output the digital signal. The optical system may further have a digital-to-analog converter to convert the digital signal to an analog signal, a laser to provide an optical signal, and a modulator to receive the optical signal and the analog signal, and modulate the optical signal based on the analog signal to form a modulated optical signal. The modulated optical signal may include the pilot tone. The optical system may also have an optical receiver to receive the modulated optical signal, process the modulated optical signal to determine a phase associated with the pilot tone, and apply the phase to the modulated optical signal to recover the signal channel.

Abstract translation: 光学系统可以具有光发射机，其包括数字信号处理器以接收信号信道，添加与导频音相对应的数据，产生与信号信道相关联的数字信号并包括导频音，并输出数字信号。 光学系统还可以具有数模转换器，以将数字信号转换成模拟信号，激光器提供光信号，调制器接收光信号和模拟信号，并调制基于光信号的 在模拟信号上形成调制光信号。 调制的光信号可以包括导频音。 光学系统还可以具有用于接收经调制的光信号的光接收器，处理经调制的光信号以确定与导频音相关的相位，并将该相位施加到经调制的光信号以恢复信号信道。