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The sensor is based on the principle of two laser-beams\u2019 interference. The light signal scattered from the particles or vapor is demodulated to measure the water surface velocity and water vapor velocity. Three velocity measurement experiments are carried out to measure the velocity, and the experimental data shows that the velocity increases linearly in the range of 4 mm\u00b7s\u22121 to 100 mm\u00b7s\u22121, with a slope of linear fitting curve of 0.99777 and the R-Square of 1.00000. The velocity calculated from frequency shift fits well with the reference velocity. The maximum average relative error in the three velocity measurements is less than 2.5%. In addition, the maximum speed of 4.398 m\u00b7s\u22121 is confirmed in the rotating disk calibration experiment, which expands the sensor\u2019s velocity measurement range. To solve the problem that it is difficult to directly measure the velocity of small-scale water surface flow velocity, especially from the aspect of the low velocity of air-water surface, the interferometric fiber optic sensor can be applied to the measurement of water surface velocity and wind velocity on the water surface.<\/jats:p>","DOI":"10.3390\/s23041795","type":"journal-article","created":{"date-parts":[[2023,2,6]],"date-time":"2023-02-06T02:06:43Z","timestamp":1675649203000},"page":"1795","update-policy":"https:\/\/doi.org\/10.3390\/mdpi_crossmark_policy","source":"Crossref","is-referenced-by-count":7,"title":["An Integrated Interferometric Fiber Optic Sensor Using a 638 nm Semiconductor Laser for Air-Water Surface Velocity Measurements"],"prefix":"10.3390","volume":"23","author":[{"ORCID":"https:\/\/orcid.org\/0000-0002-2111-0175","authenticated-orcid":false,"given":"Ran","family":"Song","sequence":"first","affiliation":[{"name":"Institute of Marine Science and Technology, Shandong University, Qingdao 266237, China"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Xinyu","family":"Zhang","sequence":"additional","affiliation":[{"name":"Institute of Marine Science and Technology, Shandong University, Qingdao 266237, China"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"ORCID":"https:\/\/orcid.org\/0000-0003-3537-2464","authenticated-orcid":false,"given":"Lili","family":"Jiang","sequence":"additional","affiliation":[{"name":"Institute of Marine Science and Technology, Shandong University, Qingdao 266237, China"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"ORCID":"https:\/\/orcid.org\/0000-0001-7357-3190","authenticated-orcid":false,"given":"Zhijun","family":"Zhang","sequence":"additional","affiliation":[{"name":"Institute of Marine Science and Technology, Shandong University, Qingdao 266237, China"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Zhigang","family":"Qiao","sequence":"additional","affiliation":[{"name":"Institute of Marine Science and Technology, Shandong University, Qingdao 266237, China"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Xianglong","family":"Hao","sequence":"additional","affiliation":[{"name":"Institute of Marine Science and Technology, Shandong University, Qingdao 266237, China"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"ORCID":"https:\/\/orcid.org\/0000-0002-7232-6339","authenticated-orcid":false,"given":"Juan","family":"Su","sequence":"additional","affiliation":[{"name":"Institute of Marine Science and Technology, Shandong University, Qingdao 266237, China"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"ORCID":"https:\/\/orcid.org\/0000-0001-8786-356X","authenticated-orcid":false,"given":"Chenxu","family":"Lu","sequence":"additional","affiliation":[{"name":"Southern Marine Science and Engineering Guangdong Laboratory (Guangzhou), Guangzhou 519000, China"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Guangbing","family":"Yang","sequence":"additional","affiliation":[{"name":"First Institute of Oceanography, Ministry of Natural Resources, Qingdao 266061, China"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Xuejun","family":"Xiong","sequence":"additional","affiliation":[{"name":"First Institute of Oceanography, Ministry of Natural Resources, Qingdao 266061, China"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Liyuan","family":"Gao","sequence":"additional","affiliation":[{"name":"Shandong Provincial Center for In-Situ Marine Sensors, Aixsensors, Dezhou 266101, China"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Chi","family":"Wu","sequence":"additional","affiliation":[{"name":"Institute of Marine Science and Technology, Shandong University, Qingdao 266237, China"},{"name":"Southern Marine Science and Engineering Guangdong Laboratory (Guangzhou), Guangzhou 519000, China"},{"name":"Shandong Provincial Center for In-Situ Marine Sensors, Aixsensors, Dezhou 266101, China"}],"role":[{"role":"author","vocabulary":"crossref"}]}],"member":"1968","published-online":{"date-parts":[[2023,2,5]]},"reference":[{"key":"ref_1","doi-asserted-by":"crossref","first-page":"268","DOI":"10.1016\/j.ecss.2011.08.009","article-title":"Propagating tsunami wave and subsequent resonant response signals detected by HF radar in the Kii Channel, Japan","volume":"95","author":"Hinata","year":"2011","journal-title":"Estuar. 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Res."},{"key":"ref_4","doi-asserted-by":"crossref","first-page":"681","DOI":"10.1038\/175681a0","article-title":"Doppler Spectrum of Sea Echo at 13.56 Mc\/s","volume":"175","author":"Crombie","year":"1955","journal-title":"Nature"},{"key":"ref_5","doi-asserted-by":"crossref","first-page":"1","DOI":"10.1016\/j.flowmeasinst.2014.10.008","article-title":"In situ measurement of sediment resuspension caused by propeller wash with an underwater particle image velocimetry and an acoustic Doppler velocimeter","volume":"41","author":"Liao","year":"2015","journal-title":"Flow Meas. Instrum."},{"key":"ref_6","doi-asserted-by":"crossref","first-page":"397","DOI":"10.1080\/00221689809498626","article-title":"Large-scale particle image velocimetry for flow analysis in hydraulic engineering applications","volume":"36","author":"Fujita","year":"2010","journal-title":"J. Hydraul. Res."},{"key":"ref_7","doi-asserted-by":"crossref","unstructured":"G\u0142omb, G., \u015awirniak, G., and Mroczka, J. (2017, January 26). An optical flow-based method for velocity field of fluid flow estimation. Proceedings of the SPIE Optical Measurement Systems for Industrial Inspection X, Munich, Germany.","DOI":"10.1117\/12.2270086"},{"key":"ref_8","doi-asserted-by":"crossref","first-page":"176","DOI":"10.1063\/1.1753925","article-title":"Localized fluid flow measurements with an He-Ne laser spectrometer","volume":"4","author":"Yeh","year":"1964","journal-title":"Appl. Phys. Lett."},{"key":"ref_9","doi-asserted-by":"crossref","first-page":"589","DOI":"10.1016\/S0143-8166(02)00003-9","article-title":"Laser Doppler velocimeter for remote measurement of polluted water and aerosols discharges","volume":"38","author":"Gondal","year":"2002","journal-title":"Opt. Laser Eng."},{"key":"ref_10","doi-asserted-by":"crossref","first-page":"6250","DOI":"10.1364\/OPEX.13.006250","article-title":"Fiber optic confocal laser Doppler velocimeter using an all-fiber laser source for high resolution measurements","volume":"13","author":"Sharma","year":"2005","journal-title":"Opt. Express"},{"key":"ref_11","doi-asserted-by":"crossref","first-page":"1781","DOI":"10.1364\/OSAC.393866","article-title":"Measurement of a flow-velocity profile using a laser Doppler velocimetry coupled with a focus tunable lens","volume":"3","author":"Ichikawa","year":"2020","journal-title":"OSA Contin."},{"key":"ref_12","doi-asserted-by":"crossref","first-page":"18288","DOI":"10.1364\/OE.16.018288","article-title":"All semiconductor laser Doppler anemometer at 1.55 \u03bcm","volume":"16","author":"Hansen","year":"2008","journal-title":"Opt. Express"},{"key":"ref_13","doi-asserted-by":"crossref","first-page":"12776","DOI":"10.1109\/JSEN.2022.3178172","article-title":"Optical Waveguide-Type Laser Interference Velocimeter for Measurement of Ultra-Low Speeds","volume":"22","author":"Song","year":"2022","journal-title":"IEEE Sens. J."},{"key":"ref_14","doi-asserted-by":"crossref","first-page":"55","DOI":"10.1088\/0022-3735\/2\/1\/313","article-title":"A new theoretical model for the laser Dopplermeter","volume":"2","author":"Rudd","year":"1969","journal-title":"J. Phys. E Sci. Instrum."},{"key":"ref_15","unstructured":"Durst, F., Melling, A., and Whitelaw, J.H. (1981). Principles and Practice of Laser-Doppler Anemometry, Academic Press. [2nd ed.]."},{"key":"ref_16","unstructured":"Cai, L.Z. (2007). Optics, Science Press. [3rd ed.]."},{"key":"ref_17","unstructured":"Drain, L.E. (1980). The Laser Doppler Technique, John Wiley & Sons."},{"key":"ref_18","doi-asserted-by":"crossref","first-page":"398","DOI":"10.1007\/BF00865941","article-title":"Laser Doppler anemometer for measuring superlow velocities","volume":"29","author":"Rinkevichyus","year":"1986","journal-title":"Meas. Tech."},{"key":"ref_19","doi-asserted-by":"crossref","unstructured":"Wu, H., Zhao, R., Gan, X., and Ma, X. (2019). Measuring surface velocity of water flow by dense optical flow method. Water, 11.","DOI":"10.3390\/w11112320"}],"container-title":["Sensors"],"original-title":[],"language":"en","link":[{"URL":"https:\/\/www.mdpi.com\/1424-8220\/23\/4\/1795\/pdf","content-type":"unspecified","content-version":"vor","intended-application":"similarity-checking"}],"deposited":{"date-parts":[[2025,10,10]],"date-time":"2025-10-10T18:25:00Z","timestamp":1760120700000},"score":1,"resource":{"primary":{"URL":"https:\/\/www.mdpi.com\/1424-8220\/23\/4\/1795"}},"subtitle":[],"short-title":[],"issued":{"date-parts":[[2023,2,5]]},"references-count":19,"journal-issue":{"issue":"4","published-online":{"date-parts":[[2023,2]]}},"alternative-id":["s23041795"],"URL":"https:\/\/doi.org\/10.3390\/s23041795","relation":{},"ISSN":["1424-8220"],"issn-type":[{"value":"1424-8220","type":"electronic"}],"subject":[],"published":{"date-parts":[[2023,2,5]]}}}