摘要
介绍了光导纤维中光速测定的基本原理 .采用调制信号 ,应用门电路测量了两路输入信号的相差 ,计算出调制信号在光导纤维中的传输时间 。
The basic principles of measuring the velocity of light in optical fiber are introduced. Using modulation signal and gate circuit, the phase difference of two-way input signal can be measured, and the transmitting time of modulation signal in optical fiber can be calculated, therefore the velocity of light is obtained.
出处
《物理实验》
北大核心
2002年第2期11-14,共4页
Physics Experimentation
