基于载波和边带相位控制的微波光子移相器

为了实现一种360°相移新型微波光子移相器,通过使用一个相位调制器、延迟线和光学滤波器来控制载波和边带的相位,最终控制射频信号的相位。相位调制器只需控制一个电压来调节移相角度,减少了使用复杂双平行马赫-曾德尔调制器所导致的漂移带来的影响,具有结构简单、成本较低等优点。结果表明,仿真验证的微波光子移相器可以在0GHz～40GHz频率范围内实现从0°～360°的全相移范围,并且在同一输出相位情况下,频率在0GHz～40GHz范围内,功率基本保持不变。此研究对微波光子移相器技术有一定参考意义。

Microwave photonic phase shifters based on phase control of optical carrier and sidebands

In order to realize a novel microwave photon phase shifter with 360° phase shift, the phase of radio frequency signal was controlled by using a phase modulator, delay line and optical filter to control the phase of carrier and sideband. The phase modulator only needs to control a voltage to adjust the phase shift angle. The effect of drift caused by the use of complex dual-parallel Mach-Zehnder modulator (DPMZM) was reduced. The system had the advantages of simple structure and low cost. The results show that, the microwave photonic phase shifter can achieve full phase shifting from 0°~360° in the frequency range of 0GHz~40GHz. And at the same output phase and under the frequency ranges from 0GHz to 40GHz, the power is basically unchanged. This research has certain reference significance for microwave photonic phase shifter technology.