Title :
Two-mode strain and temperature sensors employing white light interferometry
Author :
Bhatia, Vikram ; Murphy, Kent A. ; Claus, Richard O. ; Greene, Jonathan A.
Author_Institution :
Bradley Dept. of Electr. Eng., Virginia Polytech. Inst. & State Univ., Blacksburg, VA, USA
fDate :
31 Oct-3 Nov 1994
Abstract :
In conclusion, we have extended the principle of white light interferometry, used in conventional fiber interferometers, to two-mode fiber strain and temperature sensing. Two different demodulation techniques are presented: namely, constant phase technique for strain determination, and spectral dip monitoring for temperature sensing. This method provides absolute, real-time outputs and is independent of source intensity and spectral fluctuations
Keywords :
fibre optic sensors; absolute real-time outputs; constant phase technique; demodulation techniques; fiber interferometers; fibre optic sensors; source intensity fluctuations; spectral dip monitoring; spectral fluctuations; strain determination; strain sensors; temperature sensing; temperature sensors; two-mode sensors; white light interferometry; Capacitive sensors; Hydrogen; Intensity modulation; Optical fiber polarization; Optical fiber sensors; Optical fibers; Optical interferometry; Propagation constant; Spectral analysis; Temperature sensors;
Conference_Titel :
Lasers and Electro-Optics Society Annual Meeting, 1994. LEOS '94 Conference Proceedings. IEEE
Conference_Location :
Boston, MA
Print_ISBN :
0-7803-1470-0
DOI :
10.1109/LEOS.1994.586523
