Highly Integrated FP/FBG Sensor for Simultaneous Measurement of High Temperature and Strain
Photonics Technology Letters, IEEE （2014）
摘要
An inline fiber-optic micro-Fabry-Perot (MFP) cavity and a short fiber Bragg grating (SFBG) is overlapped to form an integrated MFP/SFBG sensor for simultaneous measurement of temperature and strain under high temperature (300 °C). The FP cavity is fabricated on a GeO2-doped photon sensitive fiber using the 157-nm laser micromachining technique and the SFBG is written at the same position of the MFP cavity using the standard 248-nm laser method. As the MFP cavity and SFBG have different sensitivity coefficients to temperature and strain, they can be utilized for realization of simultaneous measurement of dual parameters.
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关键词
Bragg gratings,fibre optic sensors,germanium compounds,integrated optics,laser beam machining,micro-optics,microcavities,micromachining,microsensors,strain measurement,strain sensors,temperature measurement,temperature sensors,GeO2-doped photon sensitive fiber,MFP cavity,SFBG,high temperature measurement,inline fiber-optic microFabry-Perot cavity,integrated FP-FBG sensor,laser micromachining technique,sensitivity coefficients,short fiber Bragg grating,strain measurement,temperature 300 degC,wavelength 157 nm,wavelength 248 nm,FBG,High temperature,laser micromachining,micro cavity,simultaneous measurement
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