UV INDUCED FIBER BRAGG GRATINGS (FBG) WRITTEN IN FULLY POLYMERIZED POLYMER OPTICAL FIBERS (POF)

摘要

We report on the inscription of Fiber Bragg gratings (FBG) in single mode polymer optical fibers (POF) using XeCl excimer laser light. Maximum index changes of Anac ≈ 1.7 × 10-4 were achieved. The UV-induced index changes are negative and vary strongly along the grating most probably due to material inhomogeneities. The POF grating response to temperature changes is -138 pm/°C under ambient conditions.