Fibre Bragg Grating Sensor - an overview | ScienceDirect Topics
The FBG sensors were fabricated on hydrogen-loaded flat-cladding fiber (Prime Optical Fiber Corp., Taiwan, ROC) with a collimated KrF excimer laser (Lumonics, Model PM 844) emitting laser pulses at 248 nm. The laser beam was focused on a horizontally positioned fiber through a phase mask.