An In-Line Fiber Optic Fabry-Perot Sensor for High-Temperature Vibration Measurement.
Micromachines (Basel)
; 11(3)2020 Mar 01.
Article
em En
| MEDLINE
| ID: mdl-32121039
ABSTRACT
An in-line fiber optic Fabry-Perot (FP) sensor for high-temperature vibration measurement is proposed and experimentally demonstrated in this paper. We constructed an FP cavity and a mass on single-mode fibers (SMFs) by fusion, and together they were inserted into a hollow silica glass tube (HST) to form a vibration sensor. The radial dimension of the sensor was less than 500 µm. With its all-silica structure, the sensor has the prospect of measuring vibration in high-temperature environments. In our test, the sensor had a resonance frequency of 165 Hz. The voltage sensitivity of the sensor system was about 11.57 mV/g and the nonlinearity was about 2.06%. The sensor could work normally when the temperature was below 500 °C, and the drift of the phase offset point with temperature was 0.84 pm/°C.
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1
Coleções:
01-internacional
Base de dados:
MEDLINE
Idioma:
En
Revista:
Micromachines (Basel)
Ano de publicação:
2020
Tipo de documento:
Article
País de afiliação:
China