基于光纤激光器的微波光子移相器研究进展

微波光子移相器是微波光子学领域中一种重要的信号处理技术，该技术采用电信号或射频信号经调制器控制光信号，再通过光器件调节光信号的相位响应，从而实现光信号在电子学领域中的移相，这种技术具有线性度高、可调谐性好、覆盖率广等优点.本文简要阐述了微波光子移相器产生的机理，总结报道了几种典型的微波光子移相技术及其应用进展，指出微波光子移相器作为一种重要的微波信号光处理方法，有望引发微波光子学领域的一次革新.

Research progress in microwave photonic phase shifter based on optical fiber laser

In the field of microwave photonics,microwave photonic phase shifter plays a key role in signal processing technology.The main component of this technology is the modulator,which can be driven by electrical signal or radio frequency signal to control the optical signal.Then the phase response of the optical signal can be adjusted through optical device.Thus the phase shift of the optical signal can be achieved in the electronic domain.It has the advantages of high linearity,good tenability and wide band,etc.In this paper,the mechanism of microwave photonic phase shifter is introduced briefly,and then several typical schemes and their latest applications are summarized.It is pointed out that microwave photonic phase shifter is expected to lead to an innovation in the field of microwave photonics.