基于微波光子学的倍频三角波生成方法

为了克服传统任意波形生成方法中电子瓶颈问题, 分析了基于微波光子学的射频任意波形的技术类型、特点和应用背景, 采用一种基于并联马赫-曾德尔调制器的倍频三角波生成方法, 引入均方根误差对输出信号和理想波形来评价, 并进行了理论分析和仿真验证。结果表明, 通过10GHz驱动信号生成了20GHz的三角波信号, 均方根误差为0.038, 即输出信号与理想信号吻合度较高;与其它方法相比, 该方法可生成倍频三角波, 信号波形与理论波形吻合度良好。该研究对未来基于微波光子学的射频任意波生成有指导意义。

Abstract

In order to overcome the problem of the electronic bottleneck in the traditional arbitrary waveform generation method, the technology type, characteristics and application background of the radio frequency arbitrary waveform based on microwave photonics were analyzed. A triangular waveform generation with frequency doubling based on parallel Mach-Zehnder modulator was adopted, and the theoretical analysis and simulation verification were carried out. The root mean square error was introduced to evaluate the output signal and the ideal waveform. The results show that, the triangle wave signal of 20GHz can be generated by 10GHz driving signal. The root mean square error is 0.038, which means the output signal is in good agreement with the ideal signal. Compared with other methods, the method can generate frequency doubling triangle wave, and the signal waveform agrees well with the theoretical waveform. It has guiding significance for the future generation of radio frequency arbitrary waves based on microwave photonics.

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王天亮, 袁牧野, 刘波, 徐志康. 基于微波光子学的倍频三角波生成方法[J]. 激光技术, 2019, 43(1): 79. WANG Tianliang, YUAN Muye, LIU Bo, XU Zhikang. Triangular waveform generation with frequency doubling based on microwave photonics[J]. Laser Technology, 2019, 43(1): 79.

基于微波光子学的倍频三角波生成方法

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