Print Email Facebook Twitter Highly sensitive miniature fluidic flowmeter based on an FBG heated by Co2+-doped fiber Title Highly sensitive miniature fluidic flowmeter based on an FBG heated by Co2+-doped fiber Author Liu, Z. Htein, L. Cheng, L.K. Martina, Q. Jansen, R. Tam, H.Y. Publication year 2017 Abstract In this paper, we present a miniature fluidic flow sensor based on a short fiber Bragg grating inscribed in a single mode fiber and heated by Co2+-doped multimode fibers. The proposed flow sensor was employed to measure the flow rates of oil and water, showing good sensitivity of 0.339 nm/(m/s) and 0.578 nm/(m/s) for water and oil, flowing at v = 0.2 m/s. The sensitivity can be increased with higher laser power launched to the Co2+-doped multimode fibers. A small flow rate of 0.005 m/s and 0.002 m/s can be distinguished for a particular phase of water or oil, respectively, at a certain laser power (i.e. ∼1.43W). The flow sensor can measure volume speed up to 30 L/min, which is limited by the test rig. The experimental results show that the sensor can discriminate slight variation of flow rates as small as 0.002m/s. Subject Nano Technology Observation, Weapon & Protection SystemsOPT - Optics AS - Acoustics & SonarTS - Technical SciencesHigh Tech Systems & MaterialsElectronicsIndustrial InnovationFibersFlow rateMultimode fibersSingle mode fibersDoped fiberFlow-sensorsFluidic flowFluidic flowmetersLaser powerSmall flow-rateSpeed upTest rigsFiber Bragg gratings To reference this document use: http://resolver.tudelft.nl/uuid:79ebe383-8c16-44fc-9f4b-970808e49aba TNO identifier 745929 Publisher OSA - The Optical Society ISSN 1094-4087 Source Optics Express, 25 (4), 4393-4402 Document type article Files To receive the publication files, please send an e-mail request to TNO Library.