Investigation of Composite Structure with Dual Fabry–Perot Cavities for Temperature and Pressure Sensing

Investigation of Composite Structure with Dual Fabry–Perot Cavities for Temperature and Pressure Sensing

To deeply analyze the influence of diaphragm materials on the temperature and pressure sensitivity of Fabry–Perot interferometer-based dual-parameter fiber sensors, the multiple transfer method was used to fabricate the dual Fabry–Perot cavities, respectively, consisting of the following combination...

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Bibliographic Details
Main Authors: Jun Wang, Long Li, Shuaicheng Liu, Diyang Wu, Wei Wang, Ming Song, Guanjun Wang, Mengxing Huang
Format: Article
Language:English
Published: MDPI AG 2021-04-01
Series:Photonics
Subjects:
Fabry–Perot cavity
temperature/pressure sensing
composite structure
multiple transfer method
Online Access:https://www.mdpi.com/2304-6732/8/5/138
Description
Summary:To deeply analyze the influence of diaphragm materials on the temperature and pressure sensitivity of Fabry–Perot interferometer-based dual-parameter fiber sensors, the multiple transfer method was used to fabricate the dual Fabry–Perot cavities, respectively, consisting of the following combinations: epoxy resin AB/polydimethylsiloxane (PDMS), Ecoflex0030 silicone rubber /PDMS, and PDMS/Ecoflex0030 silicone rubber. Experimental results show that the temperature sensitivities are, respectively, 528, 540, and 1033 pm/°C in the range of 40–100 °C. Within the applied pressure range of 100–400 kPa, the pressure sensitivities are, respectively, 16.0, 34.6, and 30.2 pm/kPa. The proposed sensors have advantages of proper sensitivity, simple fabrication, cost-effectiveness, controllable cavity length, and suitability for practical sensing applications.
ISSN:2304-6732

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