Title :
A voice recording system based on distributed fiber laser
Author :
Fujun Song ; Jun Chang ; Yubin Wei ; Qingpu Wang ; Qingjie Huang ; Delong Kong ; Zongliang Wang
Author_Institution :
Sch. of Inf. Sci. & Eng., Shandong Univ., Jinan, China
Abstract :
A voice recording system based on distributed feedback fiber laser (DFB-FL) is presented in this paper. We record and recover voice signal by interrogating the DFB-FL wavelength shift, derived from the change in the external environment around the DFB-FL. Voice recording is demonstrated using both unifrequent voice signal and human voice respectively, and satisfying results have been obtained. The system provides high precision, stability, anti-interference and security to hazardous gas. Therefore, it has promising prospects in coal mine and hazardous gas surroundings.
Keywords :
coal; distributed feedback lasers; fibre lasers; hazardous materials; interference (signal); mining; optical communication equipment; voice communication; DFB-FL wavelength shift; anti-interference; coal mine; distributed feedback fiber laser; distributed fiber laser; external environment; hazardous gas surroundings; human voice; stability; unifrequent voice signal; voice recording system; DFB-FL; PGC; voice recording; wavelength shift;
Conference_Titel :
Optical Communications and Networks (ICOCN 2010), 9th International Conference on
Conference_Location :
Nanjing
DOI :
10.1049/cp.2010.1225
