长周期莫尔光栅的理论研究

长周期光纤光栅作为一种损耗型的带阻滤波器，在光纤通信和光纤传感器领域有着广泛的应用。结合长周期光纤光栅的传输特性，利用传输矩阵法对多种长周期莫尔光栅的透射谱进行了理论模拟。分析结果表明，莫尔光栅技术在制作高性能的相移长周期光栅和变迹长周期光栅上有着很好的应用前景。

As a kind of band-rejected loss filter, long-period fibre gratings have wide applications in the field of fibre communication and fibre sensing. Combined with the transmission characteristics of long-period fibre gratings, the transmission spectrums of various long-period moiré gratings were simulated by the method of transfer Matrix. The results of analysis indicate that the moiré gratings technology can be well applied in fabricating the high-performance phase-shifted and apodised long-period fibre gratings.