{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2026,2,11]],"date-time":"2026-02-11T13:52:28Z","timestamp":1770817948419,"version":"3.50.1"},"reference-count":31,"publisher":"MDPI AG","issue":"5","license":[{"start":{"date-parts":[[2022,2,26]],"date-time":"2022-02-26T00:00:00Z","timestamp":1645833600000},"content-version":"vor","delay-in-days":0,"URL":"https:\/\/creativecommons.org\/licenses\/by\/4.0\/"}],"funder":[{"name":"Xiaohua Lei,Zhang Peng,Xianming Liu","award":["Grant No. 52175530, NO. 51975077, NO.51675068, NO.61875023, No.51805054"],"award-info":[{"award-number":["Grant No. 52175530, NO. 51975077, NO.51675068, NO.61875023, No.51805054"]}]}],"content-domain":{"domain":[],"crossmark-restriction":false},"short-container-title":["Sensors"],"abstract":"<jats:p>To improve the fringe contrast and the sensitivity of Fabry-Perot (FP) pressure sensors, a silicone rubber FP pressure sensor based on a spherical optical fiber end face is proposed. The ratio of silicone rubber ingredients and the diameter and thickness of silicone rubber diaphragm were optimized by a simulation based on experimental tests that analyzed elastic parameters, and the influence of the radius of a spherical optical fiber and the initial cavity length of the sensor on the fringe contrast was investigated and optimized. Pressure sensor samples were fabricated for pressure test and temperature cross-influence test. Gas pressure experimental results within a pressure range of 0~40 kPa show the average sensitivity of the sensor is \u2212154.56 nm\/kPa and repeatability error is less than 0.71%. Long-term pressure experimental results show it has good repeatability and stability. Temperature experimental results show its temperature cross-sensitivity is 0.143 kPa\/\u00b0C. The good performance of the proposed FP pressure sensor will expand its applications in biochemical applications, especially in human body pressure monitoring.<\/jats:p>","DOI":"10.3390\/s22051862","type":"journal-article","created":{"date-parts":[[2022,2,27]],"date-time":"2022-02-27T20:48:33Z","timestamp":1645994913000},"page":"1862","update-policy":"https:\/\/doi.org\/10.3390\/mdpi_crossmark_policy","source":"Crossref","is-referenced-by-count":5,"title":["Silicone Rubber Fabry-Perot Pressure Sensor Based on a Spherical Optical Fiber End Face"],"prefix":"10.3390","volume":"22","author":[{"given":"Changxing","family":"Jiang","sequence":"first","affiliation":[{"name":"Key Laboratory of Optoelectronic Technology & Systems, Education Ministry of China, Chongqing University, Chongqing 400044, China"}]},{"given":"Xiaohua","family":"Lei","sequence":"additional","affiliation":[{"name":"Key Laboratory of Optoelectronic Technology & Systems, Education Ministry of China, Chongqing University, Chongqing 400044, China"}]},{"given":"Yuru","family":"Chen","sequence":"additional","affiliation":[{"name":"Key Laboratory of Optoelectronic Technology & Systems, Education Ministry of China, Chongqing University, Chongqing 400044, China"}]},{"given":"Shaojie","family":"Lv","sequence":"additional","affiliation":[{"name":"Key Laboratory of Optoelectronic Technology & Systems, Education Ministry of China, Chongqing University, Chongqing 400044, China"}]},{"given":"Xianming","family":"Liu","sequence":"additional","affiliation":[{"name":"Key Laboratory of Optoelectronic Technology & Systems, Education Ministry of China, Chongqing University, Chongqing 400044, China"}]},{"given":"Peng","family":"Zhang","sequence":"additional","affiliation":[{"name":"Key Laboratory of Optoelectronic Technology & Systems, Education Ministry of China, Chongqing University, Chongqing 400044, China"}]}],"member":"1968","published-online":{"date-parts":[[2022,2,26]]},"reference":[{"key":"ref_1","doi-asserted-by":"crossref","first-page":"14675","DOI":"10.1364\/OE.27.014675","article-title":"In-fiber integrated high sensitivity temperature sensor based on long Fabry-Perot resonator","volume":"27","author":"Li","year":"2019","journal-title":"Opt. 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