电光相位体调制器驱动电路
Driving circuit of electro-optical phase modulator
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摘要: 根据电光相位体调制器的结构特征，设计了一个驱动电路，该电路主要由OP37和PA84组成,具有结构简单、性能稳定的特点。经实验测定能够在0～280 kHz频率范围内实现峰-峰值200 V的电压输出。设计了对输出信号进行相位补偿的方法，完成了光相位调制实验。利用光电探测器，检测到了由电光相位体调制器驱动电压变化所引起的干涉条纹的变化。Abstract: A driving circuit was designed for the electro-optical phase modulator, according to its structural characteristics. The circuit consists of OP37 and PA84. It is simple, but stable. The peak-to-peak value of the circuit’s output voltage is up to 200 V within the frequency range of 0 to 280 kHz. Phase compensation was designed for the output signals, and then an optical phase modulation experiment was conducted. The shift of interference fringes caused by the change of driving voltage imposed on the electro-optical modulator was observed by a photodetector.
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Key words:
- coherent combination /
- electro-optical modulation /
- driving circuit /
- phase compensation
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