Title :
Long period fibre grating torsion sensor measuring twist rate and determining twist direction simultaneously
Author :
Wang, Y.P. ; Rao, Y.J.
Author_Institution :
State Key Lab. on Local Fiber-Opt. Commun. Networks & Adv. Opt. Commun. Syst., Shanghai Jiao Tong Univ., China
Abstract :
A fibre-optic torsion sensor based on a long-period fiber grating written by high-frequency CO2 laser pulses is proposed and has been demonstrated. Such a torsion sensor cannot only measure the applied twist rate directly, but also determine the twist direction simultaneously.
Keywords :
diffraction gratings; fibre optic sensors; gas lasers; fibre optic torsion sensor; high frequency CO2 laser; long period fiber grating; twist direction determination; twist rate measurement;
Journal_Title :
Electronics Letters
DOI :
10.1049/el:20040117
