提出了一种新型光纤氢气传感器的制作方法。将光纤的包层侧边部分抛磨成“D”形状，用磁控溅射法在表面镀上钯(Pd)和Pd/WO3氢气敏感薄膜，制作出了倏逝场型光纤氢气传感器。实验结果表明，镀有Pd/WO3复合膜的传感器具有较好的线性关系和可重复性，单模光纤比多模光纤稳定性好。

A novel fiber-optic hydrogen gas sensor is proposed. The side of fiber cladding is polished to "D" shape, Pd and Pd/WO3 hydrogen-sensitive films are coated on the polished surface by magnetron sputtering, then an evanescent field fiber-optic hydrogen sensor is fabricated. The results show that a sensor which has composite Pd/WO3 thin film has good linerarity and repeatability. Meanwhile, compared with multi-mode fiber, single-mode fiber is more reliable.