Simultaneous measurement of temperature and strain using dual long-period fiber gratings with controlled temperature and strain sensitivities.
Unambiguous simultaneous measurement of strain and temperature based on dual long-period fiber gratings by controlling their thermal and strain sensitivities is proposed and experimentally demonstrated. The difference in the wavelength peak shift and the separation with the variation of strain and temperature allows discrimination between the strain and temperature effects, respectively.
Han
Young-Geun
YG
Lee
Sang
S
Kim
Chang-Seok
CS
Kang
Jin
J
Chung
Youngjoo
Y
Paek
Un-Chul
UC