Effects of chemical modification on fusion splicing of optical fiber and preparation of fiber corrosion sensor

It is very important for hydrofluoric acid to improve the performance of fused optical fiber and to prepare the fiber sensor. A novel transmitted-light differential interference contrast (DIC) system was used to nondestructively measure the refractive index profile (RIP) of an optical fiber. A hydrofluoric acid solution effectively enhanced some performances after fusion occurring. Furthermore, it also can remove the cladding of a optical fiber for constructing a fiber sensor to monitor corrosion of steel and aluminum.