Applications of acrylate-based polymer and silicone resin on LPFG-based devices

Both acrylate-based polymer and silicone resin are proposed as recoating materials surrounding long period fiber gratings (LPFGs) for purposes of different applications. For the LPFG recoated with a thin layer of acrylate-based polymer, the range of wavelength shift as much as 60 nm is expected when temperature changes from 0 to 100 °C. As for that with surrounding material of silicone resin, the temperature stability is greatly improved depicted as the maximum wavelength shift of about 0.6 nm with the same temperature variation.