Azaña J, Muriel M A
Tecnología Fotónica, ETSI Telecomunicación, Cuidad Universitaria syn, E28040 Madrid, Spain.
Appl Opt. 1999 Nov 10;38(32):6700-4. doi: 10.1364/ao.38.006700.
We show that a temporal effect equivalent to the spatial Talbot effect (self-imaging) applies to the reflection of periodic pulse trains from linearly chirped fiber gratings (LCFG's). For specific input repetition periods the reflected signal is an exact replica of the input signal. Input repetition period values that give rise to this effect depend on the dispersion coefficient of the grating. We propose to use this effect as an alternative for dispersion measurement in LCFG's. Furthermore, by using the properties of the temporal Talbot effect, we can design linear passive devices (LCFG's) for use as frequency multipliers, able to multiply the repetition rate of a given pulse train.
我们表明，一种与空间塔尔博特效应（自成像）等效的时间效应适用于来自线性啁啾光纤光栅（LCFG）的周期性脉冲序列的反射。对于特定的输入重复周期，反射信号是输入信号的精确复制品。产生这种效应的输入重复周期值取决于光栅的色散系数。我们建议将这种效应用作测量LCFG中色散的一种替代方法。此外，通过利用时间塔尔博特效应的特性，我们可以设计用作倍频器的线性无源器件（LCFG），能够使给定脉冲序列的重复率倍增。
