Research Institute of Instrumentation Frontier, National Institute of Advanced Industrial Science and Technology, Tsukuba Central 2, Tsukuba 305-8568, Japan.
Opt Lett. 2010 Jul 15;35(14):2349-51. doi: 10.1364/OL.35.002349.
A fiber Bragg grating (FBG) vibration-sensing system employing a fiber ring laser utilizing an FBG sensor as the ring cavity mirror was designed and developed herein. The fiber ring laser emitted lasing light at the Bragg wavelength of the FBG sensor, and the intensity of the lasing light varied with vibrations applied to the FBG sensor. Experiments demonstrated that this system could detect, with good sensitivity, vibrations over a broad band, ranging from just a few hertz up to ultrasound. This sensing system should be able to detect vibrations regardless of both the strain and temperature applied to the FBG sensor.
本文设计并开发了一种采用光纤环形激光器的光纤布拉格光栅（FBG）振动传感系统，该环形激光器利用 FBG 传感器作为环形腔镜发射激光，激光强度随 FBG 传感器所受振动而变化。实验表明，该系统能够以较高的灵敏度检测从几赫兹到超声波频段内的宽带振动。这种传感系统应该能够检测到 FBG 传感器所受的应变和温度变化以外的振动。
