目前报道的真延时结构有普通光纤延时线、色散光纤延时线、光纤光栅真延时、自由空间光学真延时、波导技术光学真延时等。
By now, There are many kinds of True Time delay schemes such as fiber delay line, fiber dispersion delay line, fiber grating prisms and ect.
报道了基于布里渊光纤环形激光器的可控光学延时线，通过两段串联光纤获得了较大的延时。
A controllable optical delay line using a Brillouin optical fiber ring laser is demonstrated and a large time delay is obtained by cascading two optical fiber segments.
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