A Zero-Cross Detection Algorithm for Cavity-Length Interrogation of Fiber-Optic Fabry–Perot Sensors

A Zero-Cross Detection Algorithm for Cavity-Length Interrogation of Fiber-Optic Fabry–Perot Sensors

A zero-cross detection algorithm was proposed for the cavity-length interrogation of fiber-optic Fabry−Perot (FP) sensors. The method can avoid the inaccuracy of peak determination in the conventional peak-to-peak method for the cavity-length interrogation of fiber-optic FP sensors caused...

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Main Authors: Zhibo Ma, Zechen Song, Xirui Huang, Tongxin Guo, Weizheng Yuan, Haibin Chen, Tianyang Zhang, Wei Wang
Format: Article
Language:English
Published: MDPI AG 2019-09-01
Series:Sensors
Subjects:
fiber-optic sensor
Fabry–Perot cavity
peak-to-peak method
zero-cross detection
Online Access:https://www.mdpi.com/1424-8220/19/18/3868
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spelling doaj-978c977f266d45f69d3cc0a6d7dff9692020-11-25T01:51:12ZengMDPI AGSensors1424-82202019-09-011918386810.3390/s19183868s19183868A Zero-Cross Detection Algorithm for Cavity-Length Interrogation of Fiber-Optic Fabry–Perot SensorsZhibo Ma0Zechen Song1Xirui Huang2Tongxin Guo3Weizheng Yuan4Haibin Chen5Tianyang Zhang6Wei Wang7Key Lab of Micro/Nano Systems for Aerospace, Ministry of Education, Northwestern Polytechnical University, Xi’an 710072, ChinaKey Lab of Micro/Nano Systems for Aerospace, Ministry of Education, Northwestern Polytechnical University, Xi’an 710072, ChinaSchool of Optoelectronic Engineering, Xi’an Technological University, Xi’an 710021, ChinaKey Lab of Micro/Nano Systems for Aerospace, Ministry of Education, Northwestern Polytechnical University, Xi’an 710072, ChinaKey Lab of Micro/Nano Systems for Aerospace, Ministry of Education, Northwestern Polytechnical University, Xi’an 710072, ChinaSchool of Optoelectronic Engineering, Xi’an Technological University, Xi’an 710021, ChinaSchool of Optoelectronic Engineering, Xi’an Technological University, Xi’an 710021, ChinaSchool of Optoelectronic Engineering, Xi’an Technological University, Xi’an 710021, ChinaA zero-cross detection algorithm was proposed for the cavity-length interrogation of fiber-optic Fabry−Perot (FP) sensors. The method can avoid the inaccuracy of peak determination in the conventional peak-to-peak method for the cavity-length interrogation of fiber-optic FP sensors caused by the slow variation of the spectral power density in peak neighboring regions. Both simulations and experiments were carried out to investigate the feasibility and performance of the zero-cross detection algorithm. Fiber-optic FP sensors with cavity lengths in the range of 150−1000 μm were successfully interrogated with a maximum error of 0.083 μm.https://www.mdpi.com/1424-8220/19/18/3868fiber-optic sensorFabry–Perot cavitypeak-to-peak methodzero-cross detection
collection DOAJ
language English
format Article
sources DOAJ
author Zhibo Ma
Zechen Song
Xirui Huang
Tongxin Guo
Weizheng Yuan
Haibin Chen
Tianyang Zhang
Wei Wang
spellingShingle Zhibo Ma
Zechen Song
Xirui Huang
Tongxin Guo
Weizheng Yuan
Haibin Chen
Tianyang Zhang
Wei Wang
A Zero-Cross Detection Algorithm for Cavity-Length Interrogation of Fiber-Optic Fabry–Perot Sensors
Sensors
fiber-optic sensor
Fabry–Perot cavity
peak-to-peak method
zero-cross detection
author_facet Zhibo Ma
Zechen Song
Xirui Huang
Tongxin Guo
Weizheng Yuan
Haibin Chen
Tianyang Zhang
Wei Wang
author_sort Zhibo Ma
title A Zero-Cross Detection Algorithm for Cavity-Length Interrogation of Fiber-Optic Fabry–Perot Sensors
title_short A Zero-Cross Detection Algorithm for Cavity-Length Interrogation of Fiber-Optic Fabry–Perot Sensors
title_full A Zero-Cross Detection Algorithm for Cavity-Length Interrogation of Fiber-Optic Fabry–Perot Sensors
title_fullStr A Zero-Cross Detection Algorithm for Cavity-Length Interrogation of Fiber-Optic Fabry–Perot Sensors
title_full_unstemmed A Zero-Cross Detection Algorithm for Cavity-Length Interrogation of Fiber-Optic Fabry–Perot Sensors
title_sort zero-cross detection algorithm for cavity-length interrogation of fiber-optic fabry–perot sensors
publisher MDPI AG
series Sensors
issn 1424-8220
publishDate 2019-09-01
description A zero-cross detection algorithm was proposed for the cavity-length interrogation of fiber-optic Fabry−Perot (FP) sensors. The method can avoid the inaccuracy of peak determination in the conventional peak-to-peak method for the cavity-length interrogation of fiber-optic FP sensors caused by the slow variation of the spectral power density in peak neighboring regions. Both simulations and experiments were carried out to investigate the feasibility and performance of the zero-cross detection algorithm. Fiber-optic FP sensors with cavity lengths in the range of 150−1000 μm were successfully interrogated with a maximum error of 0.083 μm.
topic fiber-optic sensor
Fabry–Perot cavity
peak-to-peak method
zero-cross detection
url https://www.mdpi.com/1424-8220/19/18/3868
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