为了在As2S8薄膜中制备条形波导,实验研究了As2S8薄膜光致折射率变化和密度变化的现象,采用棱镜耦合、X线衍射和远红外反射光谱等测试技术,确认了As2S8薄膜经紫外光辐照后薄膜密度增高、折射率增大的现象。采用可见光吸收谱测试技术,确认了经紫外光辐照的As2S8薄膜不发生黑化现象。在归纳了实验规律的基础上,提出并采用紫外光激励的方法试制了As2S8条形波导,采用自动调芯端面耦合的方法激励As2S8条形波导的导模,结果显示该波导具有良好的导波特性。 In order to prepare the strip waveguide in As2S8 thin film, the change of the refractive index and the density of the As2S8 thin film have been experimentally studied. The testing results of the prism-coupled, X-ray diffraction and far-infrared reflectance spectroscopy confirm that the As2S8 thin film is irradiated with UV light According to the film after the increase in density, refractive index increased phenomenon. Visible light absorption spectroscopy was used to confirm that As2S8 films irradiated by UV light did not blacken. Based on the experimental results, the As2S8 strip waveguide was proposed and fabricated by UV excitation. The as2S8 strip waveguide was excited by the self-aligning end-face coupling method. The results show that the waveguide has a good guided wave characteristic.