摘要
【目的】为了解决现有电光调制器体积大、集成度低和带宽小等技术问题,文章提出了一种并行多路薄膜铌酸锂电光调制器的设计方法,给出了薄膜铌酸锂电光调制器设计原理并分析了微波光传输链路增益和噪声系数指标。【方法】文章通过Lumerical Interconnect光学仿真软件,给出了微波光传输链路的仿真模型,分析研究了调制器半波电压对链路增益和噪声系数指标的影响,并对40 GHz 4路集成薄膜铌酸锂电光调制器的核心指标进行了测试。【结果】文章设计的4路集成薄膜铌酸锂电光调制器的插入损耗、半波电压、3 dB带宽和产品尺寸分别为4.5 dB、3.5 V、40 GHz和30 mm×20 mm×10 mm。使用薄膜铌酸锂电光调制器的微波光传输链路噪声系数约为30 dB。【结论】文章所提4路集成薄膜铌酸锂电光调制器比传统铌酸锂电光调制器性能更为优越。
【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 using Lumerical Interconnect optical simulation software.The effects of modulator half wave voltage on link gain and noise figure are then compared and analyzed.Finally,the key parameters of the 40 GHz four channel integrated thin film Lithium niobate electro-optic modulator are tested.【Results】The test results show that the insertion loss,half wave voltage,3 dB bandwidth 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 modulator in this paper is superior to the traditional Lithium niobate electro-optic modulator.
作者
杨鹏毅
YANG Pengyi(Anhui Province Key Laboratory of Microsystem,the 43rd Research Institute of CETC,Hefei 230088,China)
出处
《光通信研究》
北大核心
2024年第6期85-89,共5页
Study on Optical Communications
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
thin film Lithium niobate
electro-optic modulator
parallel multi-channel
microwave optical transmission
microwave photon
