间插取样光纤光栅多通道色散补偿器(英文)

Multichannel Dispersion Compensator Fabricated by Interleaving Several Sampled Fiber Bragg Gratings

对间插取样光纤光栅(ISFBG)进行了理论分析和仿真,给出了ISFBG的折射率表达式,提出了一种在较低的折射率调制深度条件下实现通道间平坦度较好的色散补偿器的制作方法.实验制作了由两个取样光纤光栅间插而成的10通道色散补偿器,其时延抖动大都小于20ps,通道间平坦度小于1dB.

By theoretic analysis of the interleaved sampled fiber Bragg gratings （ISFBG）, the refractive index modulation expression of the ISFBG is deduced. It shows that the ISFBG can be equivalent to a conventional sample fiber Bragg grating. The interleaving technique makes it available that low refractive index modulation results in more channels with almost identical reflectivity. For the first time,two SFBG are interleaved in a fiber and a 10-channels dispersion compensator is fabricated with almost identical reflectivity. The group time delay ripples of each channel are almost less than 20 ps.