{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2025,10,12]],"date-time":"2025-10-12T02:20:48Z","timestamp":1760235648021,"version":"build-2065373602"},"reference-count":36,"publisher":"MDPI AG","issue":"18","license":[{"start":{"date-parts":[[2021,9,14]],"date-time":"2021-09-14T00:00:00Z","timestamp":1631577600000},"content-version":"vor","delay-in-days":0,"URL":"https:\/\/creativecommons.org\/licenses\/by\/4.0\/"}],"funder":[{"DOI":"10.13039\/501100004826","name":"Natural Science Foundation of Beijing","doi-asserted-by":"publisher","award":["4212036","Z160002"],"award-info":[{"award-number":["4212036","Z160002"]}],"id":[{"id":"10.13039\/501100004826","id-type":"DOI","asserted-by":"publisher"}]},{"name":"Natural Science Foundation of China","award":["U2006218","61671068","61875186","61401432"],"award-info":[{"award-number":["U2006218","61671068","61875186","61401432"]}]},{"name":"Concept Verification Project of Zhongguancun Open Laboratory","award":["202005201-(07)"],"award-info":[{"award-number":["202005201-(07)"]}]},{"name":"Key Research Projects of BISTU","award":["2018-22","2019-22","2019-23","2019-27"],"award-info":[{"award-number":["2018-22","2019-22","2019-23","2019-27"]}]},{"name":"Qin Xin Talents Cultivation Program","award":["QXTCP A202103"],"award-info":[{"award-number":["QXTCP A202103"]}]},{"name":"Beijing Key Laboratory for Sensors of BISTU","award":["2020CGKF004","2019CGKF007"],"award-info":[{"award-number":["2020CGKF004","2019CGKF007"]}]}],"content-domain":{"domain":[],"crossmark-restriction":false},"short-container-title":["Sensors"],"abstract":"<jats:p>A quadrature fiber optic Fabry\u2013Perot cavity microphone based on a differential cross multiplication algorithm consists of a pair of fibers and a membrane. It has many advantages such as high sensitivity, a simple structure, and resistance to electromagnetic interference. However, there are no systematic studies on its key performance, for example, its frequency response and dynamic range. In this paper, a comprehensive study of these two key parameters is carried out using simulation analysis and experimental verification. The upper limit of the frequency response range and the upper limit of the dynamic range influence each other, and they are both affected by the data sampling rate. At a certain data sampling rate, the higher the upper limit of the frequency response range is the lower the upper limit of the dynamic range. The quantitative relationship between them is revealed. In addition, these two key parameters also are affected by the quadrature phase deviation. The quadrature phase deviation should not exceed 0.25\u03c0 under the condition that the demodulated signal intensity is not attenuated by more than 3 dB. Subsequently, a short-step quadrature Fabry\u2013Perot cavity method is proposed, which can suppress the quadrature phase deviation of the quadrature fiber optic Fabry\u2013Perot cavity microphone based on the differential cross multiplication algorithm.<\/jats:p>","DOI":"10.3390\/s21186152","type":"journal-article","created":{"date-parts":[[2021,9,14]],"date-time":"2021-09-14T03:46:14Z","timestamp":1631591174000},"page":"6152","update-policy":"https:\/\/doi.org\/10.3390\/mdpi_crossmark_policy","source":"Crossref","is-referenced-by-count":2,"title":["Research on the Frequency Response and Dynamic Range of the Quadrature Fiber Optic Fabry\u2013Perot Cavity Microphone Based on the Differential Cross Multiplication Demodulation Algorithm"],"prefix":"10.3390","volume":"21","author":[{"given":"Baokai","family":"Ren","sequence":"first","affiliation":[{"name":"Research Center for Sensor Technology, School of Applied Sciences, Mechanical Electrical Engineering School, Jianxiangqiao Campus, Beijing Information Science and Technology University, Beijing 100101, China"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Jin","family":"Cheng","sequence":"additional","affiliation":[{"name":"Research Center for Sensor Technology, School of Applied Sciences, Mechanical Electrical Engineering School, Jianxiangqiao Campus, Beijing Information Science and Technology University, Beijing 100101, China"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Longjiang","family":"Zhao","sequence":"additional","affiliation":[{"name":"College of Engineering, Qufu Normal University, Rizhao 276826, China"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Zhenghou","family":"Zhu","sequence":"additional","affiliation":[{"name":"School of Materials Science & Engineering, Nanchang University, Nanchang 330031, China"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Xiaoping","family":"Zou","sequence":"additional","affiliation":[{"name":"Research Center for Sensor Technology, School of Applied Sciences, Mechanical Electrical Engineering School, Jianxiangqiao Campus, Beijing Information Science and Technology University, Beijing 100101, China"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Lei","family":"Qin","sequence":"additional","affiliation":[{"name":"Research Center for Sensor Technology, School of Applied Sciences, Mechanical Electrical Engineering School, Jianxiangqiao Campus, Beijing Information Science and Technology University, Beijing 100101, China"},{"name":"Beijing Key Laboratory for Optoelectronic Measurement Technology, Beijing Information Science & Technology University, Beijing 100192, China"},{"name":"Key Laboratory of Modern Measurement & Control Technology, Ministry of Education, Beijing Information Science & Technology University, Beijing 100192, China"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"ORCID":"https:\/\/orcid.org\/0000-0001-6025-8407","authenticated-orcid":false,"given":"Yifei","family":"Wang","sequence":"additional","affiliation":[{"name":"Research Center for Sensor Technology, School of Applied Sciences, Mechanical Electrical Engineering School, Jianxiangqiao Campus, Beijing Information Science and Technology University, Beijing 100101, China"}],"role":[{"role":"author","vocabulary":"crossref"}]}],"member":"1968","published-online":{"date-parts":[[2021,9,14]]},"reference":[{"key":"ref_1","doi-asserted-by":"crossref","unstructured":"Bado, M.F., and Casas, J.R. 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