极化聚合物薄膜波导的光学特性

OPTICAL PROPERTIES OF POLED POLYMER FILM WAVEGUIDES

叙述了键合型ＤＡＮＳ（４－ｄｉｍｅｔｈｙｌａｍｉｎｏ－４＇ｎｉｔｒｏ－ｓｔｌｉｂｅｎｅ）聚合物薄膜波导的制备和极化过程．应用集成光学中的棱镜耦合技术，对ＤＡＮＳ聚合物薄膜波导极化前后以及紫外光照射前后的光学特性分别进行了表征．实验结果表明，极化后波导非寻常光折射率明显增大而波导寻常光折射率减小；经过紫外光照射后，波导折射率降低约０．

The processes of fabrication and poling for DANS (4 dimethylamino 4'nitro stlibene) side chain polymer film waveguide have been described in this paper. By using the prism coupling technique in yntegrated optics, the optical properties of the waveguide have been characterized before and after poling and UV photobleaching respectively. It has been demonstrated by the experiment results that the extraordinary refractive index of the wave guide was increased obviously and the ordinary refractive index of the waveguide was reduced after poling, and the refractive indices of the waveguide were reduced about 0 02 after UV photobleaching.