ZHANG Ming-chen, XU En-ming. Microwave Photonic Link with Non-Chromatic Dispersion and Large Dynamic Range Based on Phase Modulation[J]. 2017,(1):57-60.
ZHANG Ming-chen, XU En-ming. Microwave Photonic Link with Non-Chromatic Dispersion and Large Dynamic Range Based on Phase Modulation[J]. 2017,(1):57-60. DOI: 10.13756/j.gtxyj.2017.01.018.
基于相位调制的无色散大动态范围微波光子链路
摘要
为了抑制微波光子链路的三阶交调失真
提高链路的动态范围
提出了一种基于相位调制的无色散大动态范围的微波光子链路。通过对相位调制器横电模和横磁模的使用
以及将相位相差π的两路信号相加
消除三阶交调失真;另外
由于线性化后双边带信号转变为单边带信号
消除了色散的影响。仿真实验结果显示
与传统相位调制的微波光子链路相比
该方案的无杂散动态范围扩大了约19.5dB。
Abstract
In order to suppress the third-order intermodulation distortion of microwave photonic link and increase its spuriousfree dynamic range
a microwave photonic link based on phase modulation is proposed
which has a large dynamic range without chromatic dispersion.The third-order intermodulation distortion is suppressed by using two axis of phase modulator and addition of two-way signals whose phase difference betweenπ.In addition
due to the single-sideband signal after the linearization
the chromatic dispersion is also suppressed.The simulation results show that the spurious-free dynamic range of the proposed microwave photonic link is increased by 19.5dB
comparing with the conventional one.
关键词
微波光子链路相位调制无杂散动态范围
Keywords
microwave photonic linkphase modulationspurious-free dynamic range