Consiglio Nazionale delle Ricerche, Istituto Nazionale di Ottica (INO), Via Campi Flegrei, 34 I-80078 Napoli, Italy.
Sensors (Basel). 2010;10(3):1823-45. doi: 10.3390/s100301823. Epub 2010 Mar 5.
An overview on high-resolution and fast interrogation of optical-fiber sensors relying on laser reflection spectroscopy is given. Fiber Bragg-gratings (FBGs) and FBG resonators built in fibers of different types are used for strain, temperature and acceleration measurements using heterodyne-detection and optical frequency-locking techniques. Silica fiber-ring cavities are used for chemical sensing based on evanescent-wave spectroscopy. Various arrangements for signal recovery and noise reduction, as an extension of most typical spectroscopic techniques, are illustrated and results on detection performances are presented.
给出了基于激光反射光谱学的高速高分辨率光纤传感器的概述。利用外差探测和光频锁定技术，基于不同类型光纤的布拉格光纤光栅（FBG）和 FBG 谐振器可用于应变、温度和加速度测量。基于消逝波光谱学的石英光纤环形腔可用于化学传感。扩展了大多数典型光谱技术，说明了用于信号恢复和降噪的各种配置，并给出了检测性能的结果。
