晶体电光调制及通信观测分析

晶体电光调制实验通常在测量半波电压的基础上,进而观测线性区音频信号传输特性。尽管线性区是实际应用的选择区域,但是非线性区的实验现象却丰富了实验教学内容及有助于进一步理解实验物理原理。通过对传统教学设备技术改造并配合利用计算机标配资源实现了全区域的实验现象观测和实验结果深入分析,也体现了实践层次化物理实验教学改革的可行途径。

Observations on Electro-optic Effect and Audio Communication

Experiments on electro-optic modulation are usually focused on the application in audio communication based on well defined half-wave voltage.Although linear response is suited for communication,the non-linear response acts as an important role on further understanding the physics principle of electro-optic effect for teaching experiment.With using computer data acquisition and improvement on measurement technique,observations on linear and non-linear response of electro-optic effect and its audio communication were carried out and the data was analyzed with FFT method.The practice shows it provides more teaching materials for various requirements from students.