Fabry-Perot Interferometer Based on an Aluminum-Polyimide Composite Diaphragm Integrated With Mass for Acceleration Sensing
This study proposes a miniature and highly sensitive Fabry-Perot interferometer (FPI) based on aluminum - polyimide diaphragm integrated with a mass block for acceleration sensing. The composite diaphragms with a radius and thickness of 3.5 mm and 630 nm are manufactured by Micro-ElectroMechanical S...
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doaj-44fe58854c014c7f9e03f08724db42ad2021-03-29T23:12:35ZengIEEEIEEE Access2169-35362019-01-01718651018651610.1109/ACCESS.2019.29607978936896Fabry-Perot Interferometer Based on an Aluminum-Polyimide Composite Diaphragm Integrated With Mass for Acceleration SensingShili Li0https://orcid.org/0000-0001-7474-3550Xuqiang Wu1https://orcid.org/0000-0003-3739-8641Jinhui Shi2https://orcid.org/0000-0001-6749-965XQiang Ge3https://orcid.org/0000-0002-9088-2873Gang Zhang4https://orcid.org/0000-0002-0496-2851Benli Yu5https://orcid.org/0000-0002-0400-4469Key Laboratory of Opto-Electronic Information Acquisition and Manipulation of Ministry of Education, Anhui University, Hefei, ChinaKey Laboratory of Opto-Electronic Information Acquisition and Manipulation of Ministry of Education, Anhui University, Hefei, ChinaKey Laboratory of Opto-Electronic Information Acquisition and Manipulation of Ministry of Education, Anhui University, Hefei, ChinaSchool of Mathematics and Physics, Anhui Polytechnic University, Wuhu, ChinaKey Laboratory of Opto-Electronic Information Acquisition and Manipulation of Ministry of Education, Anhui University, Hefei, ChinaKey Laboratory of Opto-Electronic Information Acquisition and Manipulation of Ministry of Education, Anhui University, Hefei, ChinaThis study proposes a miniature and highly sensitive Fabry-Perot interferometer (FPI) based on aluminum - polyimide diaphragm integrated with a mass block for acceleration sensing. The composite diaphragms with a radius and thickness of 3.5 mm and 630 nm are manufactured by Micro-ElectroMechanical System (MEMS) technology. To increase the adhesion of the polyimide diaphragm to silicon wafer and improve the quality of deflectable diaphragm, a 30-nm-thick aluminum diaphragm is first coated on the silicon wafer by magnetron sputtering; a silicon wafer in the intermediate diaphragm is reserved as a mass block to form an integrated structure. Air cavity of the FPI formed by this composite diaphragm is modulated via external vibration signals, leading to a variation in the length of the cavity. Three fiber optic Fabry-Perot accelerometers (FOFPAs) are fabricated with a measured average sensitivity and acceleration resolution of 2.6 V/g (100 Hz-3.2 kHz) and 4.12 μg/Hz<sup>1/2</sup> respectively, which show high consistency and manufacturing reproducibility. Good heat resistance performance of the sensor below 280° can also be observed obviously. Thus, this proposed sensor is anticipated to have wide application prospects in micro vibration monitoring in high temperature.https://ieeexplore.ieee.org/document/8936896/MEMSaluminum-polyimide diaphragmFabry–Perot Interferometeracceleration sensing |
collection |
DOAJ |
language |
English |
format |
Article |
sources |
DOAJ |
author |
Shili Li Xuqiang Wu Jinhui Shi Qiang Ge Gang Zhang Benli Yu |
spellingShingle |
Shili Li Xuqiang Wu Jinhui Shi Qiang Ge Gang Zhang Benli Yu Fabry-Perot Interferometer Based on an Aluminum-Polyimide Composite Diaphragm Integrated With Mass for Acceleration Sensing IEEE Access MEMS aluminum-polyimide diaphragm Fabry–Perot Interferometer acceleration sensing |
author_facet |
Shili Li Xuqiang Wu Jinhui Shi Qiang Ge Gang Zhang Benli Yu |
author_sort |
Shili Li |
title |
Fabry-Perot Interferometer Based on an Aluminum-Polyimide Composite Diaphragm Integrated With Mass for Acceleration Sensing |
title_short |
Fabry-Perot Interferometer Based on an Aluminum-Polyimide Composite Diaphragm Integrated With Mass for Acceleration Sensing |
title_full |
Fabry-Perot Interferometer Based on an Aluminum-Polyimide Composite Diaphragm Integrated With Mass for Acceleration Sensing |
title_fullStr |
Fabry-Perot Interferometer Based on an Aluminum-Polyimide Composite Diaphragm Integrated With Mass for Acceleration Sensing |
title_full_unstemmed |
Fabry-Perot Interferometer Based on an Aluminum-Polyimide Composite Diaphragm Integrated With Mass for Acceleration Sensing |
title_sort |
fabry-perot interferometer based on an aluminum-polyimide composite diaphragm integrated with mass for acceleration sensing |
publisher |
IEEE |
series |
IEEE Access |
issn |
2169-3536 |
publishDate |
2019-01-01 |
description |
This study proposes a miniature and highly sensitive Fabry-Perot interferometer (FPI) based on aluminum - polyimide diaphragm integrated with a mass block for acceleration sensing. The composite diaphragms with a radius and thickness of 3.5 mm and 630 nm are manufactured by Micro-ElectroMechanical System (MEMS) technology. To increase the adhesion of the polyimide diaphragm to silicon wafer and improve the quality of deflectable diaphragm, a 30-nm-thick aluminum diaphragm is first coated on the silicon wafer by magnetron sputtering; a silicon wafer in the intermediate diaphragm is reserved as a mass block to form an integrated structure. Air cavity of the FPI formed by this composite diaphragm is modulated via external vibration signals, leading to a variation in the length of the cavity. Three fiber optic Fabry-Perot accelerometers (FOFPAs) are fabricated with a measured average sensitivity and acceleration resolution of 2.6 V/g (100 Hz-3.2 kHz) and 4.12 μg/Hz<sup>1/2</sup> respectively, which show high consistency and manufacturing reproducibility. Good heat resistance performance of the sensor below 280° can also be observed obviously. Thus, this proposed sensor is anticipated to have wide application prospects in micro vibration monitoring in high temperature. |
topic |
MEMS aluminum-polyimide diaphragm Fabry–Perot Interferometer acceleration sensing |
url |
https://ieeexplore.ieee.org/document/8936896/ |
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