Title :
High-sensitivity fibre-optic strain sensors for measuring structural distortion
Author :
Asawa, C.K. ; Yao, S.K. ; Stearns, R.C. ; Mota, N.L. ; Downs, J.W.
Author_Institution :
TRW, Technology Research Center, El Segundo, USA
Abstract :
A high sensitivity fibre-optic microbend strain sensor for detecting bending of large mechanical structures has been constructed; experimental data on transmission modulation against structural strain are presented. Optical time domain reflectometry for detecting strains at several structural points simultaneously by placing many sensors in tandem along a single fibre is described. Structural bend radii of greater than 5 km have been measured.
Keywords :
fibre optics; nonelectric sensing devices; strain measurement; time-domain reflectometry; high sensitivity fibre-optic microbend strain sensor; optical time domain reflectometry; structural distortion; structural strain; transmission modulation;
Journal_Title :
Electronics Letters
DOI :
10.1049/el:19820248
