Next Article in Journal
A Volume Measurement Method for Lunar Soil Collection Based on a Single Monitoring Camera
Previous Article in Journal
Estimation of Driver’s Danger Level when Accessing the Center Console for Safe Driving
Article Menu
Issue 10 (October) cover image

Export Article

Open AccessArticle
Sensors 2018, 18(10), 3393; https://doi.org/10.3390/s18103393

Fabry–Perot Cavity Sensing Probe with High Thermal Stability for an Acoustic Sensor by Structure Compensation

1,* , 2,3
and
1
1
Research Center for Sensor Technology, Beijing Key Laboratory for Sensor, Ministry of Education Key Laboratory for Modern Measurement and Control Technology, School of Applied Sciences, Beijing Information Science and Technology University, Beijing 100101, China
2
College of Underwater Acoustic Engineering, Harbin Engineering University, Harbin 150001, China
3
Third Research Institute of China Electronics Technology Group Corporation, Beijing 100015, China
*
Author to whom correspondence should be addressed.
Received: 26 August 2018 / Revised: 27 September 2018 / Accepted: 1 October 2018 / Published: 10 October 2018
(This article belongs to the Section Physical Sensors)
Full-Text   |   PDF [13939 KB, uploaded 13 October 2018]   |  

Abstract

Fiber Fabry–Perot cavity sensing probes with high thermal stability for dynamic signal detection which are based on a new method of structure compensation by a proposed thermal expansion model, are presented here. The model reveals that the change of static cavity length with temperature only depends on the thermal expansion coefficient of the materials and the structure parameters. So, fiber Fabry–Perot cavity sensing probes with inherent temperature insensitivity can be obtained by structure compensation. To verify the method, detailed experiments were carried out. The experimental results reveal that the static cavity length of the fiber Fabry–Perot cavity sensing probe with structure compensation hardly changes in the temperature range of −20 to 60 °C and that the method is highly reproducible. Such a method provides a simple approach that allows the as-fabricated fiber Fabry–Perot cavity acoustic sensor to be used for practical applications, exhibiting the great advantages of its simple architecture and high reliability. View Full-Text
Keywords: Fabry–Perot cavity; thermal expansion model; structure compensation; acoustic sensor; high thermal stability Fabry–Perot cavity; thermal expansion model; structure compensation; acoustic sensor; high thermal stability
Figures

Figure 1

This is an open access article distributed under the Creative Commons Attribution License which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited (CC BY 4.0).
SciFeed

Share & Cite This Article

MDPI and ACS Style

Cheng, J.; Zhou, Y.; Zou, X. Fabry–Perot Cavity Sensing Probe with High Thermal Stability for an Acoustic Sensor by Structure Compensation. Sensors 2018, 18, 3393.

Show more citation formats Show less citations formats

Note that from the first issue of 2016, MDPI journals use article numbers instead of page numbers. See further details here.

Related Articles

Article Metrics

Article Access Statistics

1

Comments

[Return to top]
Sensors EISSN 1424-8220 Published by MDPI AG, Basel, Switzerland RSS E-Mail Table of Contents Alert
Back to Top