This paper presents a miniature fiber-optic Pitot tube for gas flow rate measurements created at the tip of an optical fiber. The proposed all-fiber sensor employs two in-fiber Fabry-Perot cavities\/chambers. The first chamber is arranged as a differential pressure sensor using a thin flexible silica diaphragm and two side holes for measurement of the difference between stagnation and static pressure, while the second chamber acts as a reference sensor for compensation of changes in the gas refractive index. The entire sensor is fusion-spliced, and is made out of sections of silica fibers and silica capillaries. It is appropriate for mid to high-velocity microfluidic gas flow sensing where miniature size is essential. Sensor operation is demonstrated in a flow velocity range between 0 to 260 m\/s with a resolution better than 1.5 m\/s. The sensor has a diameter of only 200 \u03bcm.<\/p>\n\n\n\n
Published in: <\/strong>IEEE Sensors Journal<\/a> ( Volume: 20, Issue: 9<\/a>, 01 May 2020) <\/p>\n\n\n\n DOI: <\/strong>10.1109\/JSEN.2020.2966621<\/a><\/p>","protected":false},"excerpt":{"rendered":" This paper presents a miniature fiber-optic Pitot tube for gas flow rate measurements created at the tip of an optical fiber. The proposed all-fiber sensor employs two in-fiber Fabry-Perot cavities\/chambers. The first chamber is arranged as a differential pressure sensor Read More …<\/a><\/p>","protected":false},"author":7,"featured_media":1013,"comment_status":"closed","ping_status":"open","sticky":false,"template":"","format":"standard","meta":[],"categories":[24,27,40,13,26,11,19],"tags":[],"_links":{"self":[{"href":"https:\/\/au.feri.um.si\/leoss\/en\/wp-json\/wp\/v2\/posts\/1155"}],"collection":[{"href":"https:\/\/au.feri.um.si\/leoss\/en\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/au.feri.um.si\/leoss\/en\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/au.feri.um.si\/leoss\/en\/wp-json\/wp\/v2\/users\/7"}],"replies":[{"embeddable":true,"href":"https:\/\/au.feri.um.si\/leoss\/en\/wp-json\/wp\/v2\/comments?post=1155"}],"version-history":[{"count":1,"href":"https:\/\/au.feri.um.si\/leoss\/en\/wp-json\/wp\/v2\/posts\/1155\/revisions"}],"predecessor-version":[{"id":1156,"href":"https:\/\/au.feri.um.si\/leoss\/en\/wp-json\/wp\/v2\/posts\/1155\/revisions\/1156"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/au.feri.um.si\/leoss\/en\/wp-json\/wp\/v2\/media\/1013"}],"wp:attachment":[{"href":"https:\/\/au.feri.um.si\/leoss\/en\/wp-json\/wp\/v2\/media?parent=1155"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/au.feri.um.si\/leoss\/en\/wp-json\/wp\/v2\/categories?post=1155"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/au.feri.um.si\/leoss\/en\/wp-json\/wp\/v2\/tags?post=1155"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}