Optical fiber grating sensors in multimode fibers

This is the authors' abstract. We don't add key points for this paper.

We present a novel class of optical fiber sensors based on fiber Bragg gratings written in germanium-doped silica multimode fibers that can be implemented with inexpensive components. The gratings are inscribed by the phase mask technique in 50/125 µm step-index profile fibers and their temperature and strain responses are investigated.