Abstract: In this study, Polymer optical fiber (POF) was impregnated with Pyrromethene 567, using a carbon dioxide fluid solvent impregnation technique in order to develop POF for fiber laser and local communication systems applications. Some experiences were carried out to optimize the impregnation conditions, including the cosolvent, the fluid pressure, temperature and impregnation time. Furthermore, the optic characteristics of the POF was determined from the measurement of fluorescence spectrum, which was pumped at 532 nm with a Nd:YAG laser. Microscope and SEM analysis of the sample shows that the fiber structure of the sample does not be changed during this impregnation process. At last, the result clearly shows the method provides a more efficient impregnation process to compare to the traditional interfacial-gel polymerization process.

Key words: carbon dioxide fluid, Pyrromethene 567, polymer optical fiber, Impregnation