Zagorulko K, Kryukov P, Larionov Yu, Rybaltovsky A, Dianov E, Chekalin S, Matveets Yu, Kompanets V
Opt Express. 2004 Nov 29;12(24):5996-6001. doi: 10.1364/opex.12.005996.
Strong high-quality fiber Bragg gratings with photoinduced refractive-index modulation of more than 10-(3) were written in a Corning SMF-28 fiber, a P(2)O5-doped-core fiber and a pure-silica-core fluorine-doped-cladding fiber by third-harmonic radiation (267 nm, 150 fs and 1.2-1.8x1011 W/cm(2)) of a femtosecond Ti:sapphire laser using a phase mask. We compare the 267-nm photosensitivity responses with the results of irradiation by 193-nm ArF and 157-nm F(2) excimer lasers. The dependence of the refractive-index change on the exposure dose and the annealing characteristics of the fabricated gratings are typical for Type-I UV-written fiber gratings.
利用飞秒钛宝石激光器的三次谐波辐射（267纳米、150飞秒以及1.2 - 1.8×10¹¹瓦/平方厘米），通过相位掩膜法在康宁SMF - 28光纤、P₂O₅掺杂纤芯光纤以及纯硅纤芯氟掺杂包层光纤中写入了光致折射率调制超过10⁻³的高质量强光纤布拉格光栅。我们将267纳米的光敏性响应与193纳米ArF和157纳米F₂准分子激光辐照的结果进行了比较。所制备光栅的折射率变化对曝光剂量的依赖性以及退火特性对于I型紫外写入光纤光栅来说是典型的。
