{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2026,6,2]],"date-time":"2026-06-02T23:59:43Z","timestamp":1780444783860,"version":"3.54.1"},"reference-count":22,"publisher":"MDPI AG","issue":"17","license":[{"start":{"date-parts":[[2020,8,31]],"date-time":"2020-08-31T00:00:00Z","timestamp":1598832000000},"content-version":"vor","delay-in-days":0,"URL":"https:\/\/creativecommons.org\/licenses\/by\/4.0\/"}],"funder":[{"name":"The Hong Kong Polytechnic University","award":["1-ZVGB"],"award-info":[{"award-number":["1-ZVGB"]}]},{"name":"General Research Fund from RGC project","award":["15210019"],"award-info":[{"award-number":["15210019"]}]}],"content-domain":{"domain":[],"crossmark-restriction":false},"short-container-title":["Sensors"],"abstract":"<jats:p>A simple, compact, and highly sensitive gas pressure sensor based on a Fabry\u2013Perot interferometer (FPI) with a silicone rubber (SR) diaphragm is demonstrated. The SR diaphragm is fabricated on the tip of a silica tube using capillary action followed by spin coating. This process ensures uniformity of its inner surface along with reproducibility. A segment of single mode fiber (SMF) inserted into this tube forms the FPI which produces an interference pattern with good contrast. The sensor exhibits a high gas pressure sensitivity of \u22120.68 nm\/kPa along with a low temperature cross-sensitivity of \u2248 1.1 kPa\/\u00b0C.<\/jats:p>","DOI":"10.3390\/s20174927","type":"journal-article","created":{"date-parts":[[2020,8,31]],"date-time":"2020-08-31T08:11:19Z","timestamp":1598861479000},"page":"4927","update-policy":"https:\/\/doi.org\/10.3390\/mdpi_crossmark_policy","source":"Crossref","is-referenced-by-count":41,"title":["Silicone Rubber Based Highly Sensitive Fiber-Optic Fabry\u2013Perot Interferometric Gas Pressure Sensor"],"prefix":"10.3390","volume":"20","author":[{"given":"Xin","family":"Cheng","sequence":"first","affiliation":[{"name":"Department of Electrical Engineering, Photonics Research Centre, The Hong Kong Polytechnic University, Kowloon, Hong Kong 999077, China"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Jitendra","family":"Dash","sequence":"additional","affiliation":[{"name":"Department of Electrical Engineering, Photonics Research Centre, The Hong Kong Polytechnic University, Kowloon, Hong Kong 999077, China"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"ORCID":"https:\/\/orcid.org\/0000-0002-7097-0059","authenticated-orcid":false,"given":"Dinusha","family":"Gunawardena","sequence":"additional","affiliation":[{"name":"Department of Electrical Engineering, Photonics Research Centre, The Hong Kong Polytechnic University, Kowloon, Hong Kong 999077, China"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Lin","family":"Htein","sequence":"additional","affiliation":[{"name":"Department of Electrical Engineering, Photonics Research Centre, The Hong Kong Polytechnic University, Kowloon, Hong Kong 999077, China"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Hwa-Yaw","family":"Tam","sequence":"additional","affiliation":[{"name":"Department of Electrical Engineering, Photonics Research Centre, The Hong Kong Polytechnic University, Kowloon, Hong Kong 999077, China"}],"role":[{"vocabulary":"crossref","role":"author"}]}],"member":"1968","published-online":{"date-parts":[[2020,8,31]]},"reference":[{"key":"ref_1","first-page":"1","article-title":"Multimode fiber tip fabry-perot cavity for highly sensitive pressure measurement","volume":"7","author":"Chen","year":"2017","journal-title":"Sci. Rep."},{"key":"ref_2","doi-asserted-by":"crossref","first-page":"1906","DOI":"10.1364\/OE.23.001906","article-title":"Simultaneous measurement of pressure and temperature by employing fabry-perot interferometer based on pendant polymer droplet","volume":"23","author":"Sun","year":"2015","journal-title":"Opt. Express"},{"key":"ref_3","doi-asserted-by":"crossref","first-page":"17115","DOI":"10.3390\/s150717115","article-title":"Optical fibre pressure sensors in medical applications","volume":"15","author":"Poeggel","year":"2015","journal-title":"Sensors"},{"key":"ref_4","doi-asserted-by":"crossref","unstructured":"Yao, M., Ouyang, X., Wu, J., Zhang, A.P., Tam, H.Y., and Wai, P.K.A. (2018). Optical fiber-tip sensors based on in-situ \u03bc-printed polymer suspended-microbeams. Sensors, 18.","DOI":"10.3390\/s18061825"},{"key":"ref_5","doi-asserted-by":"crossref","unstructured":"Liang, H., Jia, P., Liu, J., Fang, G., Li, Z., Hong, Y., Liang, T., and Xiong, J. (2018). Diaphragm-free fiber-optic fabry-perot interferometric gas pressure sensor for high temperature application. Sensors, 18.","DOI":"10.3390\/s18041011"},{"key":"ref_6","doi-asserted-by":"crossref","first-page":"22181","DOI":"10.1364\/OE.27.022181","article-title":"Antiresonant mechanism based self-temperature-calibrated fiber optic fabry\u2013perot gas pressure sensors","volume":"27","author":"Gao","year":"2019","journal-title":"Opt. Express"},{"key":"ref_7","doi-asserted-by":"crossref","first-page":"56","DOI":"10.1016\/j.yofte.2018.02.016","article-title":"Cost-effective optical fiber pressure sensor based on intrinsic Fabry-Perot interferometric micro-cavities","volume":"42","author":"Domingues","year":"2018","journal-title":"Opt. Fiber Technol."},{"key":"ref_8","first-page":"1","article-title":"High-sensitivity gas pressure sensor based on fabry-p\u00e9rot interferometer with a side-opened channel in hollow-core photonic bandgap fiber","volume":"7","author":"Tang","year":"2015","journal-title":"IEEE Photonics J."},{"key":"ref_9","unstructured":"Fu, T.W., Yang, Y.J., Lin, J.H., Yeh, T.Y., Han, P., and Lee, C.L. (2016, January 3\u20137). A polymer-coated hollow core fiber fabry-p\u00e9rot interferometer for sensing liquid level. Proceedings of the 2016 21st OptoElectronics and Communications Conference, OECC 2016-Held Jointly with the 2016 International Conference on Photonics in Switching, Niigata, Japan."},{"key":"ref_10","doi-asserted-by":"crossref","first-page":"52","DOI":"10.1016\/j.sna.2007.04.047","article-title":"SU-8 MEMS fabry-perot pressure sensor","volume":"138","author":"Hill","year":"2007","journal-title":"Sens. Actuators A Phys."},{"key":"ref_11","doi-asserted-by":"crossref","first-page":"2493","DOI":"10.1364\/OL.37.002493","article-title":"High-sensitivity fiber-tip pressure sensor with graphene diaphragm","volume":"37","author":"Ma","year":"2012","journal-title":"Opt. Lett."},{"key":"ref_12","doi-asserted-by":"crossref","first-page":"505703","DOI":"10.1088\/0957-4484\/24\/50\/505703","article-title":"Mechanical properties of highly defective graphene: From brittle rupture to ductile fracture","volume":"24","author":"Xu","year":"2013","journal-title":"Nanotechnology"},{"key":"ref_13","unstructured":"Mohanan, P.V., and Rathinam, K. (1995, January 15\u201318). Biocompatibility studies on silicone rubber. Proceedings of the IEEE\/Engineering in Medicine and Biology Society Annual Conference, New Delhi, India."},{"key":"ref_14","doi-asserted-by":"crossref","first-page":"2","DOI":"10.2344\/0003-3006(2007)54[2:AAATTM]2.0.CO;2","article-title":"An alternative approach to the monitoring of respiration by dynamic air-pressure sensor","volume":"54","author":"Takarada","year":"2007","journal-title":"Anesth. Prog."},{"key":"ref_15","unstructured":"(2020, July 03). Young-Modulus. Available online: https:\/\/omnexus.specialchem.com\/polymer-properties\/properties\/young-modulus."},{"key":"ref_16","doi-asserted-by":"crossref","unstructured":"Luo, C., Liu, X., Liu, J., Shen, J., Li, H., Zhang, S., Hu, J., Zhang, Q., Wang, G., and Huang, M. (2019). An Optimized PDMS Thin Film Immersed Fabry-Perot Fiber Optic Pressure Sensor for Sensitivity Enhancement. Coatings, 9.","DOI":"10.3390\/coatings9050290"},{"key":"ref_17","doi-asserted-by":"crossref","first-page":"486","DOI":"10.1002\/mop.20345","article-title":"Fiber-optic Fabry-Perot interferometric gas-pressure sensors embedded in pressure fittings","volume":"42","author":"Xiao","year":"2004","journal-title":"Microw. Opt. Technol. Lett."},{"key":"ref_18","doi-asserted-by":"crossref","first-page":"1430","DOI":"10.1109\/LPT.2014.2326164","article-title":"Intrinsic fabry-p\u00e9rot interferometer based on concave well on fiber end","volume":"26","author":"Wang","year":"2014","journal-title":"IEEE Photonics Technol. Lett."},{"key":"ref_19","doi-asserted-by":"crossref","first-page":"50","DOI":"10.1364\/AO.56.000050","article-title":"Gas refractometer based on a side-open fiber optic fabry\u2013perot interferometer","volume":"56","author":"Wang","year":"2017","journal-title":"Appl. Opt."},{"key":"ref_20","doi-asserted-by":"crossref","first-page":"23484","DOI":"10.1364\/OE.23.023484","article-title":"Fiber-tip gas pressure sensor based on dual capillaries","volume":"23","author":"Xu","year":"2015","journal-title":"Opt. Express"},{"key":"ref_21","doi-asserted-by":"crossref","first-page":"4067","DOI":"10.1109\/JLT.2017.2710210","article-title":"High-sensitivity gas-pressure sensor based on fiber-tip PVC diaphragm fabry-p\u00e9rot interferometer","volume":"35","author":"Zhang","year":"2017","journal-title":"J. Light. Technol."},{"key":"ref_22","doi-asserted-by":"crossref","unstructured":"Guo, Z., Lv, W., Wang, W., Chen, Q., Zhang, X., Chen, H., and Ma, Z. (2019). Absolute single cavity length interrogation of fiber-optic compound fabry\u2013perot pressure sensors through a white light non-scanning correlation method. Sensors, 19.","DOI":"10.3390\/s19071628"}],"container-title":["Sensors"],"original-title":[],"language":"en","link":[{"URL":"https:\/\/www.mdpi.com\/1424-8220\/20\/17\/4927\/pdf","content-type":"unspecified","content-version":"vor","intended-application":"similarity-checking"}],"deposited":{"date-parts":[[2025,10,11]],"date-time":"2025-10-11T10:05:08Z","timestamp":1760177108000},"score":1,"resource":{"primary":{"URL":"https:\/\/www.mdpi.com\/1424-8220\/20\/17\/4927"}},"subtitle":[],"short-title":[],"issued":{"date-parts":[[2020,8,31]]},"references-count":22,"journal-issue":{"issue":"17","published-online":{"date-parts":[[2020,9]]}},"alternative-id":["s20174927"],"URL":"https:\/\/doi.org\/10.3390\/s20174927","relation":{},"ISSN":["1424-8220"],"issn-type":[{"value":"1424-8220","type":"electronic"}],"subject":[],"published":{"date-parts":[[2020,8,31]]}}}