| A novel super-broadband travelling-wave modulator with nonperiodic domain inversions and ridge structure |
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| 作者姓名： | 张阜文 陈福深 邱昆 |
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| 作者单位： | State Key Lab of Broadband Optic Fiber Transmission and Communication Networks，UESTC，Chengdu 610054，State Key Lab of Broadband Optic Fiber Transmission and Communication Networks，UESTC，Chengdu 610054，State Key Lab of Broadband Optic Fiber Transmission and Communication Networks，UESTC，Chengdu 610054 |
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| 基金项目： | This work was supported by the National Natural Science Foundation of China(No.60077030) |
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| 摘 要： | In order to obtain large broadband, a novel travelling-wave modulator with nonperiodic domain inversions and ridge structure is proposed. The composite structure is designed to achieve velocity matching between the optical wave and the microwave, to get a 50Ωcharacteristic impedance and to reduce the loss of the microwave electrodes with finite element method (FEM). The calculation results show that the frequency response of the new device is flat up to 350 GHz with interaction length of 1 cm, characteristic impedance of 49Ω, and microwave refractive index of 2.5.
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A novel super-broadband travelling-wave modulator with nonperiodic domain inversions and ridge structure |
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| Abstract: | In order to obtain large broadband, a novel travelling-wave modulator with nonperiodic domain inversionsand ridge structure is proposed. The composite structure is designed to achieve velocity matching betweenthe optical wave and the microwave, to get a 50 Ω characteristic impedance and to reduce the loss of themicrowave electrodes with finite element method (FEM). The calculation results show that the frequencyresponse of the new device is flat up to 350 GHz with interaction length of 1 cm, characteristic impedanceof 49 Ω, and microwave refractive index of 2.5. |
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