提出利用线性啁啾相位掩模板与重构等效啁啾( REC)技术,实现非线性啁啾光纤布拉格光栅( NLCF-BG)的方法。该方法通过设计的不同采样结构,可实现不同色散特性的NLCFBG,增加了线性啁啾相位掩模板应用的灵活性。由于线性啁啾相位掩模板本身的啁啾特性,放宽了采样间隔要求,降低了制作精度,提高了制作光栅的质量；同时克服了傅氏变换包络的限制,可实现平坦的-1级反射谱。该方法实现的NLCFBG不仅可用作残留色散补偿,在光信号处理和微波光子学中也有很好的应用前景。%Based on reconstruction equivalent chirp( REC) technique,a novel nonlinearly chirped fiber Bragg grating (NLCFBG) fabrication method is realized with linearity chirped phase mask.With different sampling period,NLCFBG with diverse dispersion can be realized,which increase the flexibility of linearity chirped mask application.As the dispersion is ob-tained through the sampling period and the linearly chirped phase mask,the sampling period is relaxed, and-1 order reflec-tive spectrum is flat,so the grating performance can be improved markedly. This method is promising in residual dispersion compensation,optical signal processing and microwave photonics.
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