All-fiber vibration sensor based on a Fabry-Perot interferometer and a microstructure beam
Research output: Journal Publications and Reviews (RGC: 21, 22, 62) › 21_Publication in refereed journal › peer-review
Author(s)
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Detail(s)
Original language | English |
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Pages (from-to) | 1211-1215 |
Journal / Publication | Journal of the Optical Society of America B: Optical Physics |
Volume | 30 |
Issue number | 5 |
Publication status | Published - May 2013 |
Link(s)
Abstract
We demonstrate an all-fiber sensor for low-frequency vibration measurements. The sensor is based on the configuration of a Fabry-Perot interferometer (FPI), where the first mirror of the FPI is a splice joint between a singlemode fiber and a hollow-core fiber (HCF) and the second mirror is the end face of an etched microstructure support beam inserted into the HCF. The support beam consists of a mass block in the middle and can oscillate freely in the HCF when the sensor is subject to vibration. Our experimental sensor using a 60 mm long support beam with a diameter of 35 μm and a mass block of 2.95 × 10-8 kg can detect vibrations at frequencies lower than 1 Hz with an acceleration resolution of 8.35 × 10-7g and a measurement range of ±2.24 g. The sensor output varies by only 2.5% when the temperature changes from 20°C to 120°C. The sensor could be embedded in composite material and find applications in harsh environments. © 2013 Optical Society of America.
Citation Format(s)
All-fiber vibration sensor based on a Fabry-Perot interferometer and a microstructure beam. / Zhang, Qiang; Zhu, Tao; Hou, Yusong; Chiang, Kin Seng.
In: Journal of the Optical Society of America B: Optical Physics, Vol. 30, No. 5, 05.2013, p. 1211-1215.Research output: Journal Publications and Reviews (RGC: 21, 22, 62) › 21_Publication in refereed journal › peer-review