Simultaneous measurement of temperature and torsion using paired helical long-period fiber gratings with opposite helicities

摘要

A novel sensor which allows for the simultaneousmeasurement of temperature and twisted angle within ranges of20 °C to 100 °C and −360° to 360° respectively, is proposed,which is based on the use of paired HLPGs with oppositehelicities. Unlike most of the previous reported temperature andtorsion sensors, the paired HLPGs were simultaneously utilizedas both the temperature and torsion sensing. Moreover, both thetorsion and torsional direction can be simultaneously determinedin the proposed sensing system.