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    METHOD AND SYSTEM FOR INTEGRATED MULTI-PORT WAVEGUIDE PHOTODETECTORS
    3.
    发明公开
    METHOD AND SYSTEM FOR INTEGRATED MULTI-PORT WAVEGUIDE PHOTODETECTORS 审中-公开
    用于集成多端口波导光电探测器的方法和系统

    公开(公告)号：EP3244242A1

    公开(公告)日：2017-11-15

    申请号：EP17170845.6

    申请日：2017-05-12

    Applicant: Luxtera, Inc.

    Inventor： Sahni, Subal ,  Masini, Gianlorenzo ,  Mekis, Attila

    IPC: G02B6/42 ,  G02B6/12

    CPC classification number: G02B6/122 ,  G02B6/12004 ,  G02B6/1228 ,  G02B6/124 ,  G02B6/125 ,  G02B6/126 ,  G02B6/2773 ,  G02B6/4215 ,  G02B6/4286 ,  G02B2006/12123 ,  H04B10/25 ,  H04B10/61 ,  H04B10/691

    Abstract: Methods and systems for integrated multi-port waveguide photodetectors are disclosed and may include an optical receiver on a chip, where the optical receiver comprises a multi-port waveguide photodetector having three or more input ports. The optical receiver may be operable to receive optical signals via one or more grating couplers, couple optical signals to the photodetector via optical waveguides in the chip, and generate an output electrical signal based on the coupled optical signals using the photodetector. The photodetector may include four ports coupled to two PSGCs. The optical signals may be coupled to the photodetector via S-bends and/or tapers at ends of the optical waveguides. A width of the photodetector on sides that are coupled to the optical waveguides may be wider than a width of the optical waveguides coupled to the sides. Optical signals may be mixed with local oscillator signals using the multi-port waveguide photodetector.

    Abstract translation: 公开了用于集成多端口波导光电探测器的方法和系统，并且可以包括芯片上的光学接收器，其中光学接收器包括具有三个或更多个输入端口的多端口波导光电探测器。 光学接收器可以用于经由一个或多个光栅耦合器接收光学信号，经由芯片中的光学波导将光学信号耦合到光电探测器，并且基于使用光电探测器耦合的光学信号来产生输出电信号。 光电探测器可以包括耦合到两个PSGC的四个端口。 光信号可以通过光波导端部的S形弯曲和/或锥形耦合到光电探测器。 耦合到光波导的侧面上的光检测器的宽度可以宽于耦合到侧面的光波导的宽度。 光信号可以使用多端口波导光电探测器与本地振荡器信号混合。

    CHROMATIC DISPERSION MEASUREMENT METHOD AND DEVICE AND DIGITAL COHERENT RECEIVER
    4.
    发明公开
    CHROMATIC DISPERSION MEASUREMENT METHOD AND DEVICE AND DIGITAL COHERENT RECEIVER 有权
    CHROMATISCHES DISPERSIONSMESSVERFAHREN UND VORRICHTUNG SOWIE DIGITALERKOHÄRENZEMPFÄNGER

    公开(公告)号：EP3096469A4

    公开(公告)日：2017-08-30

    申请号：EP14878650

    申请日：2014-04-01

    Applicant: SANECHIPS TECH CO LTD

    Inventor： YAO YANGZHONG ,  LI YUNPENG ,  CAI YI ,  ZHOU WEIQIN ,  JIA ZHENSHENG

    IPC: H04B10/2513

    CPC classification number: H04B10/07951 ,  H04B10/61

    Abstract: A chromatic dispersion measurement method, a chromatic dispersion measurement device and a digital coherent receiver. The chromatic dispersion measurement method comprises: performing chromatic dispersion sequence processing on acquired frequency domain data to obtain chromatic dispersion sequences of the frequency domain data (201); separately performing a correlation operation on the obtained chromatic dispersion sequences at a preset interval, and calculating a sum of obtained correlation values to obtain a first value (202); and determining a chromatic dispersion value according to the first value, a frequency value per unit frequency interval of the frequency domain data and the preset interval (203). In this way, the chromatic dispersion value can be accurately determined, and the processing efficiency is high.

    Abstract translation: 色散测量方法，色散测量装置和数字相干接收机。 该色散测量方法包括：对获取的频域数据进行色散处理，得到频域数据的色散序列（201）; 分别对所获得的色散序列以预设间隔进行相关运算，并计算获得的相关值的总和，得到第一值（202）。 以及根据所述第一值，所述频域数据的每单位频率间隔的频率值和所述预设间隔确定色散值（203）。 这样可以准确地确定色散值，处理效率高。

    FREQUENCY-DIVERSITY MIMO PROCESSING FOR OPTICAL TRANSMISSION
    6.
    发明公开
    FREQUENCY-DIVERSITY MIMO PROCESSING FOR OPTICAL TRANSMISSION 有权
    FREQUENZDIVERSITÄTS-MIMO-VERARBEITUNGFÜROPTISCHEÜBERTRAGUNG

    公开(公告)号：EP3047582A1

    公开(公告)日：2016-07-27

    申请号：EP14776970.7

    申请日：2014-09-16

    Applicant: Alcatel Lucent

    Inventor： KANEDA, Noriaki

    IPC: H04B10/61

    CPC classification number: H04J14/0298 ,  H04B10/506 ,  H04B10/61 ,  H04B10/64 ,  H04J14/06

    Abstract: An optical transport system configured to transmit information using two or more modulated optical carriers spaced at spectral intervals that are smaller than the baud rate. An example optical receiver in the optical transport system includes a signal equalizer configured to implement frequency-diversity multiple-input/multiple-output signal processing directed at canceling the effects of inter-carrier interference caused by the spectral overlap between adjacent modulated optical carriers to enable the optical receiver to recover individual data streams encoded onto the different modulated optical carriers at the corresponding optical transmitter(s). Some embodiments of the optical transport system may advantageously be capable of achieving a higher spectral efficiency than the spectral efficiency supported by the optical orthogonal- frequency-division-multiplexing transmission format.

    Abstract translation: 一种光传送系统，被配置为使用两个或更多个以波分率间隔隔开的调制光载波来传输信息。 光传送系统中的示例性光接收机包括信号均衡器，其被配置为实现频率分集多输入/多输出信号处理，其针对消除由相邻调制光载波之间的频谱重叠引起的载波间干扰的影响，以使得能够 光接收器，用于恢复在相应的光发射机上编码到不同调制光载波上的各个数据流。 光传输系统的一些实施例可以有利地实现比由光学正交频分复用传输格式支持的频谱效率更高的频谱效率。

    ADAPTIVE POST DIGITAL FILTER AND INTER-SYMBOL INTERFERENCE EQUALIZER FOR OPTICAL COMMUNICATION
    8.
    发明公开
    ADAPTIVE POST DIGITAL FILTER AND INTER-SYMBOL INTERFERENCE EQUALIZER FOR OPTICAL COMMUNICATION 审中-公开
    适应器数字数字接收机联合干扰器ZWISCHEN SYMBOLENFÜROPTISCHE KOMMUNIKATION

    公开(公告)号：EP2975787A1

    公开(公告)日：2016-01-20

    申请号：EP15275173.1

    申请日：2015-07-13

    Applicant: ZTE Corporation

    Inventor： Jia, Zhensheng ,  Cai, Yi ,  Yu, Jianjun

    IPC: H04B10/2575 ,  H04B10/61 ,  H04L25/03

    CPC classification number: H04B10/6971 ,  H04B10/2575 ,  H04B10/61 ,  H04B10/616 ,  H04L25/03019 ,  H04L25/03261

    Abstract: Modulated optical signals are received in a coherent optical receiver employing both post digital filter and inter-symbol-interference (ISI) equalizer such as a maximum likelihood sequence estimation (MLSE) or Bahl-Cocke-Jelinek-Raviv (BCJR) algorithms. Some disclosed techniques are directed to adaptively adjusting the impulse response in time domain (or equivalently the frequency response in frequency domain) of the post digital filter and the corresponding structure of ISI equalizer in different spectrum-narrowing operation scenarios.

    Abstract translation: 采用后数字滤波器和符号间干扰（ISI）均衡器（如最大似然序列估计（MLSE）或Bahl-Cocke-Jelinek-Raviv（BCJR）算法）的相干光接收机中接收调制的光信号。 一些公开的技术涉及在不同的频谱变窄操作场景中自适应地调整后数字滤波器的时域（或等效地频域中的频率响应）和ISI均衡器的相应结构的脉冲响应。

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