啁啾光纤光栅透镜法制作技术的理论与实验研究

Theoretical and Experimental Study on Fabrication of Chirped Fiber Gratings Using Lenses and Uniform Masks

对利用零级抑制均匀相位掩模版结合球面透镜制作啁啾（Ｃｈｉｒｐ）光纤光栅的技术进行了详细的理论和实验研究。结果表明这种方法适合于制作啁啾参数较小的光纤光栅，当所制作的光栅啁啾参数较大时，将导致严重的光谱不对称性和包层模耦合。

Fabrications of chirped fiber gratings using spherical lenses and zero order nulled phase masks are studied theortically and experimentally in details. The results show that this method is suitable for producing fiber gratings with small chirp parameters, and will led to servere unsymmetrical reflection spectra and cladding mode coupling when the chirp parameters of the gratings are relatively large.