Title :
Temperature-insensitive tilt sensor with strain-chirped fiber Bragg gratings
Author :
Dong, Xinyong ; Zhan, Chunlei ; Hu, Kun ; Shum, Ping ; Chan, Chi Chiu
Author_Institution :
Network Technol. Res. Centre, Nanyang Technol. Univ., Singapore, Singapore
Abstract :
A novel tilt sensor with three fiber Bragg gratings (FBGs) has been demonstrated. It can detect the magnitude as well as the direction of the inclination from the horizontal direction by measuring the reflected optical powers of the FBGs, whose bandwidths vary with the inclination, directly. The experimental results show that it is insensitive to temperature. The measurement accuracy of ±0.13° and resolution of 0.02° have been achieved.
Keywords :
Bragg gratings; chirp modulation; fibre optic sensors; optical fibres; spatial variables measurement; inclination direction; measurement accuracy; strain-chirped fiber Bragg gratings; temperature-insensitive tilt sensor; Bandwidth; Bragg gratings; Capacitive sensors; Fiber gratings; Optical fiber sensors; Optical filters; Optical sensors; Steel; Temperature measurement; Temperature sensors; Fiber Bragg gratings (FBGs); fiber-optic sensors; temperature-insensitive; tilt measurement;
Journal_Title :
Photonics Technology Letters, IEEE
DOI :
10.1109/LPT.2005.857978
