Tapered Fiber-Optic Mach-Zehnder Interferometer for Ultra-High Sensitivity Measurement of Refractive Index

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dc.contributor.authorAhsani, Vahid
dc.contributor.authorAhmed, Farid
dc.contributor.authorJun, Martin B.G.
dc.contributor.authorBradley, Colin
dc.date.accessioned2019-04-26T23:15:11Z
dc.date.available2019-04-26T23:15:11Z
dc.date.copyright2019en_US
dc.date.issued2019
dc.description.abstractA Mach-Zehnder interferometer (MZI) based fiberoptic refractive index (RI) sensor is constructed by uniformly tapering standard single mode fiber (SMF) for RI measurement. A custom flame-based tapering machine is used to fabricate microfiber MZI sensors directly from SMFs. The fabricated MZI device does not require any splicing of fibers and shows excellent RI sensitivity. The sensor with a cladding diameter of 35.5 µm and length of 20 mm exhibits RI sensitivity of 415 nm/RIU for RI range of 1.332 to 1.384, 1103 nm/RIU for RI range of 1.384 to 1.4204 and 4234 nm/RIU for RI range of 1.4204 to 1.4408, respectively. The sensor reveals a temperature sensitivity of 0.0097 nm/°C, which is relatively low in comparison to its ultra-high RI sensitivity. The proposed inexpensive and highly sensitive optical fiber RI sensors have numerous applications in chemical and biochemical sensing fields.en_US
dc.description.reviewstatusRevieweden_US
dc.description.scholarlevelFacultyen_US
dc.description.sponsorshipThis work was funded by the Ministry of Trade, Industry & Energy (MOTIE), Korea with the following Grant number (10053248).en_US
dc.identifier.citationAhsani, V., Ahmed, F., Jun, M.B.G. & Bradley, C. (2019). Tapered Fiber-Optic Mach- Zehnder Interferometer for Ultra-High Sensitivity Measurement of Refractive Index. Sensors, 19(7), 1652. https://doi.org/10.3390/s19071652en_US
dc.identifier.urihttps://doi.org/10.3390/s19071652
dc.identifier.urihttp://hdl.handle.net/1828/10763
dc.language.isoenen_US
dc.publisherSensorsen_US
dc.subjectMach-Zehnder interferometer
dc.subjectfiber-optic sensor
dc.subjectrefractive index measurement
dc.subjectfiber tapering
dc.subject.departmentDepartment of Mechanical Engineering
dc.titleTapered Fiber-Optic Mach-Zehnder Interferometer for Ultra-High Sensitivity Measurement of Refractive Indexen_US
dc.typeArticleen_US

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