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

Volume

14

Issue

9

fYear

2002

Firstpage

1336

Lastpage

1338

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;

fLanguage

English

Journal_Title

Photonics Technology Letters, IEEE

Publisher

ieee

ISSN

1041-1135

Type

jour

DOI

10.1109/LPT.2002.801116

Filename

1032372