Title :
A novel demodulation technique for the wavelength shift of fiber Bragg grating sensors using the I/Q signal processing scheme
Author :
Sung Chul Kang ; Sang Bae Lee ; Sang Sam Choi ; Byoungho Lee
Author_Institution :
Sch. of Electr. Eng., Seoul Nat. Univ., South Korea
fDate :
Aug. 30 1999-Sept. 3 1999
Abstract :
We introduce a novel scheme to obtain the I/Q signals optically using a dual head fiber Bragg grating (FBG) sensor and an optical-path-controlled Mach-Zehnder interferometer. Using the scheme as a demodulator for the FBG sensor, intensity-based measurement of dynamic strain was experimentally demonstrated.
Keywords :
Bragg gratings; demodulation; fibre optic sensors; light interferometry; optical modulation; I/Q signal processing scheme; demodulation technique; dynamic strain; fiber Bragg grating sensors; intensity-based measurement; optical-path-controlled Mach-Zehnder interferometer; wavelength shift; Bragg gratings; Capacitive sensors; Demodulation; Fiber gratings; Magnetic heads; Optical fiber sensors; Optical interferometry; Optical sensors; Strain measurement; Wavelength measurement;
Conference_Titel :
Lasers and Electro-Optics, 1999. CLEO/Pacific Rim '99. The Pacific Rim Conference on
Conference_Location :
Seoul, South Korea
Print_ISBN :
0-7803-5661-6
DOI :
10.1109/CLEOPR.1999.811340
