Kompetenzzentrum für optische Spezialfasern

This letter presents simulation and experimental results of orientation-dependent transverse stress fiber sensors using fiber Bragg gratings inscribed in four-hole suspended core fibers. Resonant peak shifts and splitting of fiber Bragg gratings were studied as functions of the applied transverse load and fiber orientation. Both simulation and experimental results revealed that response of fiber Bragg grating in suspended core fibers are sensitive to both the orientation and magnitude of an applied transverse stress.