Experimental study about microwave photonic frequency multiplication system based on polarization modulator
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摘要: 为了证明微波光子倍频系统可以构成光载无线通信系统的一部分，采用不受光纤色散影响的基于偏振调制器的倍频系数可调的微波光子系统，理论论证和分析了基于偏振调制器的二倍频、四倍频和六倍频的系统原理和特性。针对于不同的倍频系数，构建了相应的实验方案，进行了实验验证、数据分析和实验结果讨论，在不断进行实验系统优化的基础上实现了良好的倍频输出结果。结果表明，倍频输出的微波/毫米波信号在仪器测量允许的范围内最大可达到42GHz，且此系统具有受光纤色散影响小的优点。Abstract: In order to prove that the microwave photonic frequency multiplication system can be one part of radio over fiber transmission system, the microwave photonic system based on polarization modulator with the adjustable frequency multiplication factors and without the effect of fiber dispersion was demonstrated. The system principles and characteristics of two, four and six frequency multiplication based on the polarization modulator were analyzed theoretically. The responding different schemes were designed for different frequency multiplication factors. The experimental demonstration, data analysis and experimental result discussion were carried out. The good output of frequency multiplication was achieved on the basis of the ongoing optimization of the experimental system. The results show that the frequency multiplication output of the microwave/millimeter wave signals can be up to 42GHz within the scope of the instrument allowed. The system has the advantage of the small effect of fiber dispersion.
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