本文介绍了我们在国内首次研制成功的全光可调移相器 ,它采用气隙距离调节法 ,可在光域上直接实现 ps量级的高速光信号相位 (时延 )调节 ,最大调整相位量为 60 0 ps,插入损耗 <7d B,调节精度 <0 .0 3 ps.对实现光分组交换、光时分复用、光信号处理等具有重要意义 .另外 ,本文还介绍了光信号相位的精密测量方法 This paper introduces the first all-optical tunable phase shifter we developed in China. It uses the air-gap distance adjustment method to directly adjust the phase (delay) of high-speed optical signals of ps magnitude in the optical domain and adjust the maximum phase The amount is 60 0 ps, ​​the insertion loss is less than 7d B, the adjustment accuracy is less than 0 3 ps, which is of great significance for optical packet switching, optical time division multiplexing, optical signal processing, etc. In addition, Precision measurement methods