Title :
Wavelength Sweep of Intracavity Fiber Laser for Low Concentration Gas Detection
Author :
Liu, Kun ; Jing, Wencai ; Peng, Gangding ; Zhang, Jianzhong ; Wang, Yan ; Liu, Tiegen ; Jia, Dagong ; Zhang, Hongxia ; Zhang, Yimo
Author_Institution :
Coll. of Precision Instrum. & Opto-Electron. Eng., Tianjin Univ., Tianjin
Abstract :
Wavelength sweep technique (WST) is introduced into intracavity fiber laser (ICFL) for low concentration gas detection. The limitation induced by noise can be eliminated using this method, and the performance of the system is improved. The sensitivity of the system is reduced to less than 200 ppm. With WST, the sweeping characteristic of the ICFL can be described according to known gas absorption spectra.
Keywords :
fibre lasers; fibre optic sensors; gas sensors; laser cavity resonators; measurement by laser beam; gas absorption spectra; intracavity fiber laser; low concentration gas detection; spectrum analysis; sweeping characteristics; wavelength measurement; wavelength sweep technique; Educational institutions; Environmentally friendly manufacturing techniques; Erbium-doped fiber amplifier; Fiber lasers; Gas lasers; Industrial pollution; Instruments; Laboratories; Laser noise; Optical fibers; Gas detection; optical fiber laser; spectrum analysis; wavelength measurement;
Journal_Title :
Photonics Technology Letters, IEEE
DOI :
10.1109/LPT.2008.928526
