Polarization division multiplexed optical orthogonal frequency division multiplexing transmitter and receiver
    1.
    发明授权
    Polarization division multiplexed optical orthogonal frequency division multiplexing transmitter and receiver 有权
    偏振分复用光正交频分复用发射机和接收机

    公开(公告)号:US08693459B2

    公开(公告)日:2014-04-08

    申请号:US12772350

    申请日:2010-05-03

    Abstract: Provided is a polarization division multiplexed optical OFDM transmitter. The polarization division multiplexed optical OFDM transmitter includes a data demultiplexer, a training symbol generation unit and an optical up-converter and polarization division multiplexing unit. The data demultiplexer divides a transmission signal into a plurality of groups. The training symbol generation unit allocates a plurality of training symbols for each OFDM data which is included in the respective multiplexed groups, and allocates repetitive data in a time domain for the respective training symbols for data of 0 to periodically appear for the respective training symbols in a frequency domain. The optical up-converter and polarization division multiplexing unit performs optical frequency band conversion and polarization division multiplexing on an output of the training symbol generation unit to output a polarization division multiplexed optical OFDM signal corresponding to a plurality of polarization components.

    Abstract translation: 提供了一种偏振分复用光OFDM传输器。 偏振分复用光OFDM传输器包括数据解复用器,训练符号生成单元和光上变频器和偏振分割复用单元。 数据解复用器将发送信号分成多个组。 训练符号生成单元为包含在各个多路复用组中的每个OFDM数据分配多个训练符号,并且在时域中分配针对各个训练符号的各个训练符号的重复数据,以针对各个训练符号周期性出现 频域。 光学上变频器和偏振分光复用单元在训练符号生成单元的输出上执行光频带转换和偏振分割复用,以输出对应于多个偏振分量的偏振复用光OFDM信号。

    METHOD AND APPARATUS FOR TRANSMITTING AND RECEIVING COHERENT OPTICAL OFDM
    7.
    发明申请
    METHOD AND APPARATUS FOR TRANSMITTING AND RECEIVING COHERENT OPTICAL OFDM 有权
    用于发送和接收相关光学OFDM的方法和装置

    公开(公告)号:US20120155887A1

    公开(公告)日:2012-06-21

    申请号:US13301814

    申请日:2011-11-22

    Abstract: Disclosed are a method and an apparatus for transmitting and receiving coherent optical OFDM. The apparatus includes: a transmitted OFDM digital signal processing unit outputting an in-phase (I) component digital signal and a quadrature phase (Q) component digital signal; a digital-analog converter converting the in-phase (I)-component digital signal and the quadrature-phase (Q)-component digital signal into an in-phase (I)-component analog signal and a quadrature-phase (Q)-component analog signal, respectively; an adder adding an additional pilot tone signal to each of the in-phase (I)-component analog signal and the quadrature-phase (Q)-component analog signal outputted from the digital-analog converter; and an optical I/Q modulator up-converting the in-phase (I)-component analog signal added with the additional pilot tone signal and the quadrature-phase (Q)-component analog signal added with the additional pilot tone signal to an optical domain to output a coherent optical OFDM signal including the additional pilot tone signal.

    Abstract translation: 公开了用于发送和接收相干光OFDM的方法和装置。 该装置包括:发送的OFDM数字信号处理单元,输出同相(I)分量数字信号和正交相位(Q)分量数字信号; 将同相(I)分量数字信号和正交相位(Q))数字信号转换为同相(I)分量模拟信号和正交相位(Q)分量数字信号的数模转换器, 分量模拟信号; 对从数模转换器输出的同相(I)分量模拟信号和正交相(Q))模拟信号中的每一个加上附加导频音信号的加法器; 以及光学I / Q调制器,将添加有附加导频音信号的同相(I)分量模拟信号和加上附加导频音信号的正交相位(Q))模拟信号上变频到光 域以输出包括附加导频音信号的相干光OFDM信号。

    ADAPTER ASSEMBLY AND METHOD FOR COMPENSATING OPTICAL FIBERS FOR LENGTH DIFFERENCE
    9.
    发明申请
    ADAPTER ASSEMBLY AND METHOD FOR COMPENSATING OPTICAL FIBERS FOR LENGTH DIFFERENCE 有权
    适配器组件和用于补偿光纤长度差的方法

    公开(公告)号:US20110142398A1

    公开(公告)日:2011-06-16

    申请号:US12788237

    申请日:2010-05-26

    CPC classification number: G02B6/3825 G02B6/3894

    Abstract: Provided are an adapter assembly and method for compensating optical fibers for a length difference. The adapter assembly includes a first adapter, a second adapter, and a member. The first adapter is configured to be connected to at least one optical communication unit. The second adapter is configured to be connected to at least another optical communication unit and be coupled to the first adapter. The member is configured to be interposed between the first and second adapters for providing an optical signal transmission path between the optical communication units. Owing to the member, a length difference between optical fibers can be compensated for.

    Abstract translation: 提供一种用于补偿光纤长度差的适配器组件和方法。 适配器组件包括第一适配器,第二适配器和构件。 第一适配器被配置为连接到至少一个光通信单元。 第二适配器被配置为连接到至少另一个光通信单元并且被耦合到第一适配器。 构件被配置为插入在第一和第二适配器之间,以在光通信单元之间提供光信号传输路径。 由于该构件,可以补偿光纤之间的长度差。

    POLARIZATION SPLITTER, OPTICAL HYBRID AND OPTICAL RECEIVER INCLUDING THE SAME
    10.
    发明申请
    POLARIZATION SPLITTER, OPTICAL HYBRID AND OPTICAL RECEIVER INCLUDING THE SAME 审中-公开
    偏振分离器,光学混合光学接收器,包括它们

    公开(公告)号:US20110064422A1

    公开(公告)日:2011-03-17

    申请号:US12765360

    申请日:2010-04-22

    CPC classification number: H04B10/614 G02B6/12004 H04B10/60

    Abstract: Provided is an optical receiver used for an optical communication system, more particularly, a polarization split-phase shift demodulation coherent optical receiver. An optical hybrid includes a first optical splitter, a phase shift waveguide, a second optical splitter, and an optical coupler. The first optical splitter splits a first input optical signal to output first output optical signals. The phase shift waveguide receives the first output optical signals and controls and outputs the first output optical signals such that the first output optical signals have different phases. The second optical splitter splits a second input optical signal to output a plurality of second output optical signals. The optical coupler couples the first output optical signals one-to-one with the second output optical signals, respectively.

    Abstract translation: 提供了一种用于光通信系统的光接收机,更具体地说,是一种偏振分相相移解调相干光接收机。 光学混合器包括第一分光器,相移波导,第二分光器和光耦合器。 第一光分路器分离第一输入光信号以输出第一输出光信号。 相移波导接收第一输出光信号并控制并输出第一输出光信号,使得第一输出光信号具有不同的相位。 第二光分路器分割第二输入光信号以输出多个第二输出光信号。 光耦合器将第一输出光信号与第二输出光信号分别耦合一对一。

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