Title :
Intra-cavity absorption sensors for gas detection using wavelength sweep technique
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, China
Abstract :
Wavelength sweep technique (WST) is introduced into intra-cavity 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 300 ppm. With WST, sweeping characteristic of the ICFL can be described according to known gas absorption spectra.
Keywords :
fibre lasers; gas sensors; gas detection; intra-cavity absorption sensors; intra-cavity fiber laser; optical fibre laser; spectrum analysis; wavelength measurement; wavelength sweep technique; Absorption; Educational institutions; Erbium-doped fiber amplifier; Fiber lasers; Gas detectors; Gas lasers; Instruments; Laboratories; Laser noise; Optical fiber sensors; Optical fiber laser; gas detection; spectrum analysis; wavelength measurement;
Conference_Titel :
Optical Fiber Sensors Conference, 2008. APOS '08. 1st Asia-Pacific
Conference_Location :
Chengdu
Print_ISBN :
978-1-4244-2131-2
Electronic_ISBN :
978-1-4244-2132-9
DOI :
10.1109/APOS.2008.5226292
