The influence of fiber's photosensitivity by doping process

摘要

With the rapid development and widely used of fiber grating, the demand of high quality photosensitive fiber has increase greatly. Based on the plasma chemical vapor deposition (PCVD) process, the Ge/F co-doped photosensitive fiber was developed. Through analyze the fiber's photosensitivity, study the fiber's photosensitivity influenced by the doping process. The data indicate that the high F doped (5%) Ge/F photosensitive fiber's grating has the 80% reflectivity, much lower than the low F doped(1%) Ge/F photosensitive fiber's 94%. The F doped content can influence the fiber's photosensitivity distinctly.