[Objective]In order to solve the technical problems of large volume,low integration and small bandwidth of electro-optic modulator,a design method of parallel multi-channel thin film Lithium niobate electro-optic modulator is proposed.The design principle of thin film Lithium niobate electro-optic modulator is presented,and the gain and noise figure of microwave optical transmission link are analyzed.[Methods]A simulation model of microwave optical transmission links is established u-sing Lumerical Interconnect optical simulation software.The effects of modulator half wave voltage on link gain and noise fig-ure are then compared and analyzed.Finally,the key parameters of the 40 GHz four channel integrated thin film Lithium nio-bate electro-optic modulator are tested.[Results]The test results show that the insertion loss,half wave voltage,3 dB band-width and size of the designed four-channel integrated film Lithium niobate electro-optic modulator are 4.5 dB,3.5 V,40 GHz and 30 mm×20 mm×10 mm,respectively.The noise figure of microwave optical transmission link using thin-film Lithium niobate modulator is about 30 dB.[Conclusion]The designed four channel integrated film Lithium niobate electro-optic modula-tor in this paper is superior to the traditional Lithium niobate electro-optic modulator.
关键词
薄膜铌酸锂/电光调制器/并行多路/微波光传输/微波光子
Key words
thin film Lithium niobate/electro-optic modulator/parallel multi-channel/microwave optical transmission/micro-wave photon
维普
万方数据