随着5G技术的飞速发展，高速光通信网络的建设迫在眉睫，而铌酸锂电光调制器是高速光通信中信号调制系统的重要组成部分，提高铌酸锂电光调制器的性能是高速信号调制技术进一步发展的基础。从铌酸锂电光调制器市场情况出发，总结了近年来铌酸锂电光调制器在各方面可行的改进和研究，比较了各种研究成果，探讨了几种改进方法的优缺点，并进行了相应的实验研究，指出了硅基集成铌酸锂电光调制器在未来通信系统中的远大应用前景。

With the rapid development of 5G, the construction of high-speed optical communication network is extremely urgent. Lithium niobate modulator is an important part of signal modulation system in high-speed optical communication. Improving the performance of lithium niobate modulator is the basis of the further development of high-speed signal modulation technology. This paper embarks from the present situation of the application of lithium niobate electrooptic modulator, summarizes the various research institutions in recent years for lithium niobate modulator in all aspects of the improvement and research, compared the various improvement direction of the known research achievements, the advantages and disadvantages of several improving methods are discussed, and the corresponding experimental research is carried out, points out the new silicon-based integrated lithium niobate modulator is the prospect of further development.