会员体验
专利管家(专利管理)
工作空间(专利管理)
风险监控(情报监控)
数据分析(专利分析)
侵权分析(诉讼无效)
联系我们
交流群
官方交流:
QQ群: 891211   
微信请扫码    >>>
现在联系顾问~
热词
    • 127. 发明申请
    • SYSTEM AND METHOD FOR PHOTONICALLY ASSISTED ANALOG TO DIGITAL SIGNAL CONVERSION
    • 用于光电辅助模拟到数字信号转换的系统和方法
    • WO2012073243A1
    • 2012-06-07
    • PCT/IL2011/050035
    • 2011-11-29
    • YISSUM RESEARCH DEVELOPMENT COMPANY OF THE HEBREW UNIVERSITY OF JERUSALEM LTD.MAROM, Dan
    • MAROM, Dan
    • H03M1/12
    • H03M1/1205G02F7/00H03M1/124H03M1/1245
    • A photonically assisted analog to digital conversion (ADC) system is presented. The system comprises: an optical sampling signal generator configured and operable for generating an optical sampling signal comprising a predetermined sampling pulse sequence in the form of a time separated pulse train of spectral components dispersed in a periodic fashion, where each pulse is distinguishable by a central wavelength thereof different from its neighboring pulses. The generation of the pulse sampling sequence is achieved by combining broadband dispersion and compensation with a periodic dispersion compensator having a free spectral range smaller than the broad bandwidth of the ultrashort pulse. The second innovative element is the introduction of coherent detection with oversampling of the interference terms of the phase modulated pulse sampling sequence and a reference pulse. The oversampling provides additional measurements of the beat term and by way of error minimization a more reliable phase estimation is provided, translated into a more accurate conversion to digital representation. The system further comprises an electro-optical modulator for interacting an input electric analog signal and an optical sampling signal and generating a modulated optical signal indicative of said input signal; and a detection system configured and operable for receiving said modulated optical signal and generating an output digital signal corresponding to said input electric analog signal.
    • 提出了一种光子辅助模数转换(ADC)系统。 该系统包括:光采样信号发生器,其被配置和可操作用于产生光采样信号,该采样信号包括以周期性方式分散的频谱分量的时间分离脉冲串形式的预定采样脉冲序列,其中每个脉冲可由中央 其波长与其相邻脉冲不同。 通过将宽带色散和补偿与具有小于超短脉冲的宽带宽的自由光谱范围的周期色散补偿器组合来实现脉冲采样序列的产生。 第二个创新因素是引入相干检测,对相位调制脉冲采样序列和参考脉冲的干涉项进行过采样。 过采样提供了节拍项的附加测量,并且通过误差最小化提供了更可靠的相位估计,被转换成更准确的数字表示转换。 该系统还包括电光调制器,用于与输入电模拟信号和光采样信号相互作用并产生指示所述输入信号的调制光信号; 以及检测系统,其配置和操作用于接收所述调制光信号并产生对应于所述输入电模拟信号的输出数字信号。