RADIO FREQUENCY SIGNAL TRANSCEIVER, COHERENT RADAR RECEIVER AND METHOD OF PROCESSING RADIO FREQUENCY SIGNALS
    2.
    发明公开
    RADIO FREQUENCY SIGNAL TRANSCEIVER, COHERENT RADAR RECEIVER AND METHOD OF PROCESSING RADIO FREQUENCY SIGNALS 有权
    射频信号发送方接收方进行处理射频信号的相干雷达接收器和方法

    公开(公告)号:EP2845332A1

    公开(公告)日:2015-03-11

    申请号:EP12718648.4

    申请日:2012-04-30

    IPC分类号: H04B10/90 H03B28/00

    摘要: An RF signal transceiver comprising a mode-locked laser to output an optical signal having a plurality of phase-locked modes, an optical splitter to power split the optical signal into a transmitter optical signal and a receiver optical signal; a transmitter apparatus to receive the transmitter optical signal and comprising an optical filter to select two of the modes, an optical modulator to modulate a part of the transmitter optical signal to form at least one phase modulated optical signal, and a photodetector to heterodyne the phase modulated optical signal with one of the modes without a corresponding phase modulation to form an RF signal for transmission; and a receiver apparatus arranged to receive an RF signal and the receiver optical signal and comprising an optical modulator to modulate the receiver optical signal with the received RF signal; and an optical to electrical signal conversion apparatus to convert the modulated receiver optical signal into a corresponding electrical signal.

    摘要翻译: RF信号收发机,包括一个锁模激光输出具有锁相模式的多个光学信号,光分路器到功率分裂光信号到光发射器信号和接收器的光信号; 一个发送装置,以接收光学滤波器的所述光发射器的信号,并且包括选择两个在光学调制器的模式来调制所述光发射器信号,以形成至少一个相位调制的光信号的一部分,以及光检测器,用于外差相位 调制的光信号与没有对应的相位调制,以形成RF信号的用于传输的模式中的一个; 和接收器装置被布置成接收在RF信号和所述接收器的光信号和光调制器,其包括以调节与所接收的RF信号的光信号接收器; 和光 - 电信号转换装置调制的光信号接收器转换为相应的电信号。

    APPARATUS AND METHOD FOR GENERATING OPTICAL PULSES
    3.
    发明公开
    APPARATUS AND METHOD FOR GENERATING OPTICAL PULSES 审中-公开
    装置及其制造方法的光脉冲

    公开(公告)号:EP2283550A1

    公开(公告)日:2011-02-16

    申请号:EP08760288.4

    申请日:2008-05-30

    摘要: An apparatus and method for generating a train of optical pulses. The apparatus comprises an optical resonant cavity (1) for confining an optical signal in the cavity to a number of modes, a modulator (3), and a control signal generator (101). The modulator comprises an interferometer arranged to cause interference of the optical signal with itself to produce an output and controllable material, such as an electro-optic crystal, arranged in a path of the optical signal, an optical property of the controllable material dependent on a control signal (3b) applied to the controllable material such that changes in the optical property alter optical signals travelling that path to affect the interference of the optical signals, and therefore the output of the modulator. The control signal generator is arranged to generate the control signal, wherein the control magnitude is an oscillating waveform arranged to cause transmission of the optical signal through the modulator to generate pulses having a pulse width shorter than a pulse width of pulses that would be generated using a sinusoidal waveform of the same frequency.

    IMPROVEMENTS IN EXTRACTING OPTICAL LABELS
    4.
    发明公开
    IMPROVEMENTS IN EXTRACTING OPTICAL LABELS 审中-公开
    改进技术光学标签的提取

    公开(公告)号:EP2484034A1

    公开(公告)日:2012-08-08

    申请号:EP09736968.0

    申请日:2009-10-20

    IPC分类号: H04J14/08 H04Q11/00 H04J14/02

    摘要: An optical label extractor (10) comprising a non-linear optical element (12), a pump source (14) and optical filter apparatus (16). Said non-linear optical element (12) is arranged to receive optical data packets (18) at data signal wavelengths. Each said data packet comprises at least one data bit and at least one label bit. Said pump source (14) is arranged to pump said non-linear optical element such that any non-zero label bit experiences a non-linear optical effect on propagation through said non-linear optical element and an output label bit (20) comprising a respective further wavelength is thereby generated. Said optical filter apparatus (16) is arranged to receive any said output label bit from said non-linear optical element and being further arranged to prevent transmission of a part of said output label at said respective data signal wavelength and to transmit a part of said output label bit at said respective further wavelength.