Title :
Novel intracavity sensing network based on mode-locked fiber laser
Author :
Yan Zhang ; Jin, W. ; Yu, H.B. ; Zhang, Yan ; Liao, Y.B. ; Ho, H.L. ; Demokan, M.S. ; Stewart, G. ; Culshaw, B. ; Li, Y.H.
Author_Institution :
Dept. of Electr. Eng., Hong Kong Polytech. Univ., Kowloon, China
Abstract :
The authors report a novel technique for interrogating a network of intracavity absorption sensors. The technique is based on a mode-locking principle where different sensors are addressed by their associated mode-locking frequencies. Experiments with a two-sensor network demonstrated negligible crosstalk between sensors and a sensitivity of 128 times better than that of a single-pass direct absorption sensor.
Keywords :
fibre lasers; fibre optic sensors; gas sensors; laser cavity resonators; laser mode locking; spectrochemical analysis; acetylene; gas sensor; intracavity absorption sensor interrogation; intracavity sensing network; intracavity spectroscopy; minimum detectable gas concentrations; mode-locked fiber laser; mode-locking frequencies; multipoint measurement; sensitivity; sensor addressing; two-sensor network; Costs; Erbium-doped fiber amplifier; Erbium-doped fiber lasers; Fiber lasers; Gas detectors; Laser mode locking; Optical fiber communication; Optical fiber sensors; Optical filters; Spectroscopy;
Journal_Title :
Photonics Technology Letters, IEEE
DOI :
10.1109/LPT.2002.801116
