Title :
A novel method to measure dynamic strain using optical-path controlled Mach-Zehnder interferometer and fiber Bragg grating sensor
Author :
Kang, Sung Chul ; Lee, Sang Bae ; Choi, Sang Sam ; Lee, Byoungho
Author_Institution :
Sch. of Electr. Eng., Seoul Nat. Univ., South Korea
Abstract :
We introduce a Mach-Zehnder interferometer whose optical path difference is controlled by a tunable optical delay line. Using the interferometer as a demodulator for fiber Bragg grating sensors, intensity-based measurement of dynamic strain with a wide range of 0~1880 μstrain and 0~1 kHz is experimentally demonstrated
Keywords :
Bragg gratings; Mach-Zehnder interferometers; fibre optic sensors; optical delay lines; optical tuning; strain measurement; strain sensors; dynamic strain; dynamic strain measurement; fiber Bragg grating sensor; intensity-based measurement; optical path difference; optical-path controlled Mach-Zehnder interferometer; strain sensors; tunable optical delay line; Delay lines; Fiber nonlinear optics; Nonlinear optics; Optical control; Optical interferometry; Optical modulation; Optical sensors; Optical signal processing; Strain control; Strain measurement;
Conference_Titel :
Lasers and Electro-Optics Society Annual Meeting, 1998. LEOS '98. IEEE
Conference_Location :
Orlando, FL
Print_ISBN :
0-7803-4947-4
DOI :
10.1109/LEOS.1998.737899
