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    Method and apparatus for transmitting and receiving coherent optical OFDM
    1.
    发明授权
    Method and apparatus for transmitting and receiving coherent optical OFDM 有权
    用于发送和接收相干光OFDM的方法和装置

    公开(公告)号：US09270381B2

    公开(公告)日：2016-02-23

    申请号：US13301814

    申请日：2011-11-22

    申请人： Chun Ju Youn ,  Yong-Hwan Kwon ,  Duk Jun Kim ,  Jong-Hoi Kim ,  Joong-Seon Choe ,  Kwang-Seong Choi ,  Eun Soo Nam

    发明人： Chun Ju Youn ,  Yong-Hwan Kwon ,  Duk Jun Kim ,  Jong-Hoi Kim ,  Joong-Seon Choe ,  Kwang-Seong Choi ,  Eun Soo Nam

    IPC分类号： H04B10/06 ,  H04B10/04 ,  H04B10/548 ,  H04B10/077 ,  H04B10/588 ,  H04B10/61 ,  H04L27/20 ,  H04L27/26

    CPC分类号： H04B10/548 ,  H04B10/0775 ,  H04B10/588 ,  H04B10/613 ,  H04B10/6165 ,  H04L27/2096 ,  H04L27/2613 ,  H04L27/2657 ,  H04L27/2675 ,  H04L27/2692 ,  H04L27/2697

    摘要： 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.

    摘要翻译： 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。

    CORE AND OPTICAL WAVEGUIDE
    2.
    发明申请
    CORE AND OPTICAL WAVEGUIDE 审中-公开
    核心和光波导

    公开(公告)号：US20130156362A1

    公开(公告)日：2013-06-20

    申请号：US13611085

    申请日：2012-09-12

    申请人： Duk Jun KIM ,  Jong-Hoi Kim ,  Joong-Seon Choe ,  Chun Ju Youn ,  Kwang-Seong Choi ,  Yong-Hwan Kwon ,  Eun Soo Nam

    发明人： Duk Jun KIM ,  Jong-Hoi Kim ,  Joong-Seon Choe ,  Chun Ju Youn ,  Kwang-Seong Choi ,  Yong-Hwan Kwon ,  Eun Soo Nam

    IPC分类号： G02B6/26 ,  G02B6/00

    CPC分类号： G02B6/1228 ,  G02B6/126

    摘要： Provided is a core which reduces optic splice loss between discontinuous optical waveguides. The core includes a first waveguide propagation portion having first light-receiving width, a first lightwave discontinuous portion having second light-receiving width, a first taper structure portion having both ends connected to the first lightwave propagation portion and to the first lightwave discontinuous portion, respectively and decreasing in light-receiving width as it goes from the first lightwave propagation portion to the first lightwave discontinuous portion, a second lightwave propagation portion having third light-receiving width, a second lightwave discontinuous portion having fourth light-receiving width, and a second taper structure portion having both ends connected to the second lightwave propagation portion and to the second lightwave discontinuous portion, respectively and decreasing in light-receiving width as it goes from the second lightwave propagation portion to the second lightwave discontinuous portion.

    摘要翻译： 提供了减少不连续光波导之间的光接头损耗的核心。 该芯包括具有第一光接收宽度的第一波导传播部分，具有第二光接收宽度的第一光波不连续部分，具有连接到第一光波传播部分的两端和第一光波不连续部分的第一锥形结构部分， 分别从第一光波传播部分到第一光波不连续部分的光接收宽度减小，具有第三受光宽度的第二光波传播部分，具有第四光接收宽度的第二光波不连续部分和 第二锥形结构部分，其两端分别连接到第二光波传播部分和第二光波不连续部分，并且随着从第二光波传播部分到第二光波不连续部分的光接收宽度的减小，第二锥形结构部分。

    Adapter assembly and method for compensating optical fibers for length difference
    3.
    发明授权
    Adapter assembly and method for compensating optical fibers for length difference 有权
    用于补偿光纤长度差的适配器组件和方法

    公开(公告)号：US08272789B2

    公开(公告)日：2012-09-25

    申请号：US12788237

    申请日：2010-05-26

    申请人： Joong-Seon Choe ,  Yong-Hwan Kwon ,  Chun Ju Youn ,  Jong-Hoi Kim ,  Kwang-Seong Choi ,  Eun Soo Nam

    发明人： Joong-Seon Choe ,  Yong-Hwan Kwon ,  Chun Ju Youn ,  Jong-Hoi Kim ,  Kwang-Seong Choi ,  Eun Soo Nam

    IPC分类号： G02B6/38

    CPC分类号： G02B6/3825 ,  G02B6/3894

    摘要： 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.

    摘要翻译： 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。

    OPTICAL WAVEGUIDE STRUCTURE HAVING ANGLED MIRROR AND LENS
    5.
    发明申请
    OPTICAL WAVEGUIDE STRUCTURE HAVING ANGLED MIRROR AND LENS 审中-公开
    具有光学镜片和镜片的光学波形结构

    公开(公告)号：US20120114293A1

    公开(公告)日：2012-05-10

    申请号：US13250019

    申请日：2011-09-30

    申请人： Joong-Seon Choe ,  Duk Jun Kim ,  Chun Ju Youn ,  Jong-Hoi Kim ,  Kwang-Seong Choi ,  Yong-Hwan Kwon ,  Eun Soo Nam

    发明人： Joong-Seon Choe ,  Duk Jun Kim ,  Chun Ju Youn ,  Jong-Hoi Kim ,  Kwang-Seong Choi ,  Yong-Hwan Kwon ,  Eun Soo Nam

    IPC分类号： G02B6/036 ,  B05D5/06

    CPC分类号： G02B6/32 ,  G02B6/12 ,  G02B6/4214

    摘要： The present disclosure relates to a planar optical waveguide element, and more particularly, to an optical waveguide end structure for effective optical signal connection with a light source, a light receiving element, or a different type of optical waveguide element.According to an exemplary embodiment of the present disclosure, there is disclosed an optical waveguide structure, including: a planar optical waveguide including a lower clad, a waveguide core formed on the lower clad, and a clad layer formed on the waveguide core; and an optical lens formed on a surface of the clad layer.One end of the optical waveguide forms an inclined surface having a predetermined inclination angle.

    摘要翻译： 本发明涉及一种平面光波导元件，更具体地，涉及一种用于与光源，光接收元件或不同类型的光波导元件的有效光信号连接的光波导端结构。 根据本公开的示例性实施例，公开了一种光波导结构，包括：平面光波导，包括下包层，形成在下包层上的波导芯和形成在波导芯上的覆层; 以及形成在包层的表面上的光学透镜。 光波导的一端形成具有预定倾斜角的倾斜面。

    POLARIZATION DIVISION MULTIPLEXED OPTICAL ORTHOGONAL FREQUENCY DIVISION MULTIPLEXING TRANSMITTER AND RECEIVER
    7.
    发明申请
    POLARIZATION DIVISION MULTIPLEXED OPTICAL ORTHOGONAL FREQUENCY DIVISION MULTIPLEXING TRANSMITTER AND RECEIVER 有权
    极化多路复用光学正交频分复用发射机和接收机

    公开(公告)号：US20110096855A1

    公开(公告)日：2011-04-28

    申请号：US12772350

    申请日：2010-05-03

    申请人： Chun Ju YOUN ,  Yong-Hwan Kwon ,  Jong-Hoi Kim ,  Joong-Seon Choe ,  Kwang-Seong Choi ,  Kyoungwoo Heo ,  Eun Soo Nam

    发明人： Chun Ju YOUN ,  Yong-Hwan Kwon ,  Jong-Hoi Kim ,  Joong-Seon Choe ,  Kwang-Seong Choi ,  Kyoungwoo Heo ,  Eun Soo Nam

    IPC分类号： H04L27/28 ,  H04L1/02 ,  H04L27/00

    CPC分类号： H04L25/0226 ,  H04B10/532 ,  H04B10/548 ,  H04J14/06 ,  H04L27/2613

    摘要： 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.

    摘要翻译： 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。

    Polarization division multiplexed optical orthogonal frequency division multiplexing transmitter and receiver
    9.
    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

    申请人： Chun Ju Youn ,  Yong-Hwan Kwon ,  Jong-Hoi Kim ,  Joong-Seon Choe ,  Kwang-Seong Choi ,  Kyoungwoo Heo ,  Eun Soo Nam

    发明人： Chun Ju Youn ,  Yong-Hwan Kwon ,  Jong-Hoi Kim ,  Joong-Seon Choe ,  Kwang-Seong Choi ,  Kyoungwoo Heo ,  Eun Soo Nam

    IPC分类号： H04J3/06

    CPC分类号： H04L25/0226 ,  H04B10/532 ,  H04B10/548 ,  H04J14/06 ,  H04L27/2613

    摘要： 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.

    摘要翻译： 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。