Title :
Real-time measurement of multi-point strain by fiber Bragg gratings using optical frequency sweeping
Author :
Shinoda, Yukitaka ; Sasaki, Yu. ; Nagai, Kenichi ; Ogura, Izumi ; Higo, Takashi
Author_Institution :
Coll. of Sci. & Technol., Nihon Univ., Tokyo, Japan
Abstract :
This paper is described how FBG and OFDR can be combined to cover a greater number of locations by using FBGs with identical characteristics in combination with FBGs with different reflection wavelengths. We report on our basic experiments on multi-point strain measurements with a real-time measurement system. It is shown that this system can determine the reflection wavelengths from multiple FBGs with the same reflection wavelength simultaneously every 4 seconds.
Keywords :
Bragg gratings; fibre optic sensors; strain measurement; fiber Bragg gratings; multipoint point strain measurements; optical frequency sweeping; real-time measurement; reflection wavelengths; Bragg gratings; Fiber gratings; Frequency measurement; Optical interferometry; Optical reflection; Optical refraction; Optical sensors; Position measurement; Strain measurement; Wavelength measurement; OFDR; fiber Bragg grating; health-monitoring; strain measurement;
Conference_Titel :
ICCAS-SICE, 2009
Conference_Location :
Fukuoka
Print_ISBN :
978-4-907764-34-0
Electronic_ISBN :
978-4-907764-33-3
