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    • 1. 发明授权
    • Multiple-input method and apparatus of free-space optical communication
    • 自由空间光通信的多输入方法和装置
    • US09048950B2
    • 2015-06-02
    • US12915506
    • 2010-10-29
    • Young-kai ChenNoriaki KanedaAlex Pidwerbetsky
    • Young-kai ChenNoriaki KanedaAlex Pidwerbetsky
    • H04B10/00H04B10/112
    • H04B10/1121H04B10/613
    • An approach is provided that uses diversity to compensate fading of free-space optical (FSO) signals propagating through an environment characterized by atmospheric scintillation. One embodiment involves collecting at least one FSO beam, demultiplexing the beam by wavelength into at least two sub-beams, detecting each sub-beam to produce an electrical output therefrom, and recovering a signal using complementary information from at least two of the electrical outputs. Another embodiment involves collecting the FSO beam onto an array of spatially separated sub-apertures, detecting the light entering each sub-aperture to produce an electrical output therefrom, and recovering a signal using complementary information from at least two of the electrical outputs. This second embodiment enables both electronic adaptive processing to coherently integrate across the sub-apertures and in the case of multiple transmit apertures a free space optical Multiple Input Multiple Output (MIMO) system.
    • 提供了一种使用分集来补偿通过大气闪烁特征的环境传播的自由空间光(FSO)信号的衰落的方法。 一个实施例涉及收集至少一个FSO波束,通过波长将光束解复用为至少两个子波束,检测每个子波束以产生电输出,以及使用来自至少两个电输出的补充信息来恢复信号 。 另一个实施例涉及将FSO光束收集到空间上分离的子孔径阵列上,检测进入每个子孔径的光以产生其电输出,以及使用来自至少两个电输出的补充信息来恢复信号。 该第二实施例使得电子自适应处理能够在子孔径之间相干地集成,并且在多个发射孔径的情况下使得自由空间光学多输入多输出(MIMO)系统。
    • 4. 发明授权
    • Optical beamforming transmitter
    • 光束成形发射机
    • US07929864B2
    • 2011-04-19
    • US11366145
    • 2006-03-02
    • Young-Kai ChenAndreas Leven
    • Young-Kai ChenAndreas Leven
    • H04B10/00H04B10/04
    • H01Q3/2676
    • The present invention provides an optical beamforming RF transmitter. In one embodiment, the optical beamforming RF transmitter includes an optical WDM splitter having an input and a plurality of outputs. The optical beamforming RF transmitter also includes an array of antennas, where each antenna has an optical input configured to drive the corresponding antenna, and an array of optical modulators, such that each modulator has an output connected to a corresponding one of the antennas and an input connected to one of the outputs of the optical WDM splitter. The optical beamforming RF transmitter further includes a mode-locked laser having an output optically coupled to the input of the optical WDM splitter.
    • 本发明提供一种光束成形射频发射机。 在一个实施例中,光束成形RF发射器包括具有输入和多个输出的光学WDM分离器。 光束成形RF发射器还包括天线阵列,其中每个天线具有配置成驱动相应天线的光学输入和光学调制器阵列,使得每个调制器具有连接到相应的一个天线的输出和 输入连接到光学WDM分离器的一个输出。 光束成形RF发射器还包括具有光学耦合到光学WDM分离器的输入的输出的锁模激光器。
    • 8. 发明授权
    • Self-Calibrating integrated photonic circuit and method of control thereof
    • 自校准集成光子电路及其控制方法
    • US07688872B2
    • 2010-03-30
    • US12050225
    • 2008-03-18
    • Young-Kai ChenMahmoud RasrasKun-Yii Tu
    • Young-Kai ChenMahmoud RasrasKun-Yii Tu
    • H01S3/13
    • H01S5/0687
    • A self-calibrating integrated photonic circuit and a method of controlling the same. In one embodiment, the circuit includes: (1) a substrate, (2) a laser located on the substrate and configured to produce source light at an output frequency, (3) a laser alignment sensor located on the substrate and including: (3a) a reference optical resonator configured to receive the source light, have a null proximate a predetermined center frequency and provide output light as a function of a relationship between the output frequency and the center frequency and (3b) a photodetector configured to provide an electrical signal of a magnitude that is based on the output light and (4) a calibration controller located on the substrate, coupled to the photodetector and configured to adjust the output frequency based on the magnitude.
    • 一种自校准集成光子电路及其控制方法。 在一个实施例中,电路包括:(1)衬底,(2)位于衬底上并被配置为以输出频率产生光源的激光器,(3)位于衬底上的激光对准传感器,包括:(3a )配置为接收源光的参考光学谐振器,具有接近预定中心频率的零点,并且作为输出频率和中心频率之间的关系的函数提供输出光,以及(3b)被配置为提供电信号 基于输出光的幅度和(4)位于衬底上的校准控制器,耦合到光电检测器并且被配置为基于大小来调整输出频率。