Title :
A dual-wavelength fiber Bragg grating sensing system by the use of a gain switched Fabry-Perot laser diode
Author :
Zhang, M. ; Chan, C.C. ; Wang, D.N. ; Gong, J.M. ; Jin, W. ; Demokan, M.S.
Author_Institution :
Dept. of Electr. Eng., Hong Kong Polytech. Univ., Kowloon, China
Abstract :
The dual-wavelength-fiber-Bragg-gratings (DWFBGs) fabricated by writing two FBGs with different Bragg wavelengths at the same location of the fiber have been used as strain sensing elements in this work. In order to get high sensitivity, a dual-wavelength pulsed laser source is employed. An accuracy of 2% within ±50 με range has been achieved
Keywords :
Bragg gratings; fibre optic sensors; semiconductor lasers; strain sensors; Bragg wavelengths; dual-wavelength fiber Bragg grating; dual-wavelength pulsed laser source; gain switched Fabry-Perot laser diode; sensitivity; strain sensing elements; Bragg gratings; Capacitive sensors; Diode lasers; Fabry-Perot; Fiber gratings; Fiber lasers; Optical fiber sensors; Strain measurement; Temperature sensors; Writing;
Conference_Titel :
Nanotechnology, 2001. IEEE-NANO 2001. Proceedings of the 2001 1st IEEE Conference on
Conference_Location :
Maui, HI
Print_ISBN :
0-7803-7215-8
DOI :
10.1109/NANO.2001.966483
