可调谐掺铒光纤激光器在光纤传感中的应用

Application of Tunable Erbium-Doped Fiber Laser in FBG Sensing System

在光纤传感领域中,光纤光栅传感器若采用一般的宽带光源,从传感光栅反射的光会很弱,从而限制系统信噪比和分辨率。论文设计可调谐环形腔掺铒激光器,对激光输出功率和信噪比等参数进行分析,并将其应用于光纤传感解调,可提高光纤传感解调系统的信噪比及复用能力,优化传感系统性能。

In optical fiber sensing field, if common broadband light source is adopted in FBG sensor, the reflected light from FBG is weak, which will limit the SNR （signal noise ratio） and resolution of the sensing system. In this paper, a tunable erbium-doped fiber ring laser is designed and analyzed. The tunable laser is applied in she interrogation of optical fiber sensing system and the experiment indicates that it could advance the SNR and ability of multiplexing of FBG sensor system and improve the system performance.