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利用一个多功能光子波形发生器生成一组5.5GHz超宽带信号。多功能光子波形发生器由一个单级双驱动马赫曾德尔调制器及一段单模光纤组成,通过调节双驱动马赫曾德尔调制器的输入射频信号及直流偏置,以及单模光纤的色散,可以产生单峰脉冲、双峰脉冲和一个具有高功率谱效率的超宽带信号,产生的超宽带信号完全符合美国联邦通信委员会制定的室内通信辐射限制要求,普通的单峰脉冲和双峰脉冲的光功率谱效率分别可以达到0.1%和0.74%,经过变量特殊设置,可以产生一个高效的超宽带信号,其功率谱效率可以高达24.03%。这种超宽带信号发生器可以用于室内定位、室内通讯等领域。
A multi-function photonic waveform generator generates a set of 5.5GHz ultra-wideband signals. The multi-function photonic waveform generator consists of a single-stage dual-drive Mach-Zehnder modulator and a section of single mode fiber. By adjusting the input RF signal and DC bias of the dual-drive Mach-Zehnder modulator and the dispersion of the single-mode fiber, Producing unimodal pulses, bimodal pulses, and an ultra-wideband signal with high power spectral efficiency produce ultra-wideband signals that fully meet the radiation limits imposed by the Federal Communications Commission for indoor communication, common unimodal and bimodal pulsed light The power spectral efficiency can reach 0.1% and 0.74%, respectively. With the special settings of the variables, an efficient ultra-wideband signal can be generated with a power spectral efficiency of up to 24.03%. This ultra-wideband signal generator can be used for indoor positioning, indoor communications and other fields.