With the development of microwave photonics technology

great achievements have been achieved in solving the function that cannot be directly realized in the traditional RF field

and the development of optoelectronic communication technology is greatly promoted.However

microwave photon technology is still facing new challenges:the existing optical communication system consists of discrete optical/electrical

electrical/optical components

smaller size of devices and systems in the constant pursuit of higher speed

higher bandwidth

higher processing power of communication systems

lower power consumption and stronger anti-interference ability.Therefore

by silicon integrated technology and microwave photonic technology combined with microwave photonics system chip integration

thus reducing the cost

smaller size

lower power consumption of the whole system

is the inevitable developing trend of microwave photonics.This paper summarizes the development of microwave photonic integrated technology and silicon-based photonic devices.It is pointed out that tunable and programmable silicon-based microwave photonic chips will become the key technology to limit the development of military and civilian fields.