摘要
A high-performance compact vibration sensor based on fiber Bragg grating （FBG） is designed. The acceleration sensitivity of the FBG vibration sensor is measured to be larger than 30 pm/g. From 10 Hz to 250 Hz, a quite flat frequency-response curve can be obtained with additional damping, which suppresses the resonance peak effectively. A phase-generated carrier （PGC） demodulation technique realized by compact reconfigurable input and output （RIO） system is applied in our sensing system.
A high-performance compact vibration sensor based on fiber Bragg grating （FBG） is designed. The acceleration sensitivity of the FBG vibration sensor is measured to be larger than 30 pm/g. From 10 Hz to 250 Hz, a quite flat frequency-response curve can be obtained with additional damping, which suppresses the resonance peak effectively. A phase-generated carrier （PGC） demodulation technique realized by compact reconfigurable input and output （RIO） system is applied in our sensing system.
基金
This work was supported by National Natural Science Foundation of China under the grant no. 61205083, Shandong Major Independent hmowttion and Conmmrcialization Project under grant no. 2011ZHZX1A0107 and Shndong Province Natural Science foundation mlter grant no. ZR2012FQ002.
