CAJ | 학술논문

介绍了利用光波在已知长度差的两段不同长度的光导纤维中传输时间延时差测量光速的基本原理。时钟方波信号通过LED调制电路转变为光信号在一段光导纤维中传输,后经SPD再生电路重新转变为方波再生信号,将原始方波信号与再生方波信号同时输入示波器中测量延时τ1,采用相同的方法测量另一端光导纤维传输延时τ2,通过已知的长度差和延时计算出光导纤维中的光速VZ ,最终计算出光速c。
개소료이용광파재이지장도차적량단불동장도적광도섬유중전수시간연시차측량광속적기본원리。시종방파신호통과LED조제전로전변위광신호재일단광도섬유중전수,후경SPD재생전로중신전변위방파재생신호,장원시방파신호여재생방파신호동시수입시파기중측량연시τ1,채용상동적방법측량령일단광도섬유전수연시τ2,통과이지적장도차화연시계산출광도섬유중적광속VZ ,최종계산출광속c。
It introduces the basic principles of measuring the velocity of light in two different lengths optical fi-bers. The square wave clock signal was transformed into light signal by LED circuit of modulation. SPD regen-erated circuit transformed the light signal to the regenerated signal after light signal transmission in optical fi-ber. The delay time τ1 was measured by the oscilloscope when putting both of the source and regenerated sig-nals in it. Using the same method could measure the other optical fiber’ s delay time τ2 . The light of velocity could be calculated by formula.