Title :
Novel interrogation system for dynamic strain measurement based on fiber Bragg grating sensor using long period grating pair and EDF
Author :
Jung, Jaehoon ; Lee, Yong Wook ; Lee, Byoungho
Author_Institution :
Sch. of Electr. Eng., Seoul Nat. Univ., South Korea
Abstract :
In this paper, we employ a novel demodulation scheme to monitor the dynamic perturbation of a fiber Bragg grating (FBG) sensor using an long-period grating (LPG) pair with erbium-doped fiber (EDF) inserted between the two LPGs. The experimental results show that the proposed technique features high resolution and much more immunity to temperature perturbation compared to the conventional unbalanced Mach-Zehnder interferometer (MZI)
Keywords :
Bragg gratings; fibre optic sensors; strain sensors; demodulation; dynamic strain measurement; erbium doped fiber; fiber Bragg grating sensor; long period grating pair; wavelength interrogation system; Bandwidth; Capacitive sensors; Fiber gratings; Monitoring; Optical coupling; Optical fiber sensors; Optical propagation; Sensor systems; Signal processing; Strain measurement;
Conference_Titel :
Lasers and Electro-Optics Society 2000 Annual Meeting. LEOS 2000. 13th Annual Meeting. IEEE
Conference_Location :
Rio Grande
Print_ISBN :
0-7803-5947-X
DOI :
10.1109/LEOS.2000.894035
