eprintid: 6874 rev_number: 2 eprint_status: archive userid: 1 dir: disk0/00/00/68/74 datestamp: 2023-11-09 16:18:40 lastmod: 2023-11-09 16:18:40 status_changed: 2023-11-09 16:07:53 type: article metadata_visibility: show creators_name: Krishnan, G. creators_name: Bidin, N. creators_name: Abdullah, M. creators_name: Ahmad, M.F.S. creators_name: Bakar, M.A.A. creators_name: Yasin, M. title: Liquid refractometer based mirrorless fiber optic displacement sensor ispublished: pub keywords: Fiber optic sensors; Fibers; Liquids; Refractive index; Refractometers; Sensors, Displacement; Fiber optic displacement sensor; Intensity modulations; Liquid refractometers; Mirrorless; Peak voltage; Refractometer sensors; Sensitivity, Fiber optics note: cited By 12 abstract: Liquid refractometer based mirrorless fiber optic displacement sensor is proposed and demonstrated. Various liquid samples with refractive index in the range of 1.333-1.433 RIU were used as modulator. The refractometer sensor was operated based on intensity modulation with regard to displacement sensor. Each of the tested samples has its own fingerprint. This allows the performance of the sensor to be quantified based on the front slope, back slope and peak voltage. The peak voltage is optimized at constant displacement of 3 mm. The sensitivity of the refractometer sensor based mirrorless fiber optic displacement sensor is achieved as 188.37 mV/mm/RIU with repeatability of 99.87 and resolution of 0.00531RIU. The sensor work based on the peak voltage. The higher the peak voltage means the higher the refractive index of the liquid medium. The collection of more lights entering into the receiver is realized due to the contribution from the reflectivity of the surface liquid. Such mirrorless liquid refractometer sensor offering many advantages including the simplicity, easier, faster and cheaper compared to conventional refractometer. © 2016 Elsevier B.V. All rights reserved. date: 2016 publisher: Elsevier B.V. official_url: https://www.scopus.com/inward/record.uri?eid=2-s2.0-84974794779&doi=10.1016%2fj.sna.2016.05.040&partnerID=40&md5=1b709834094d8532f3f28b03fdfa31d4 id_number: 10.1016/j.sna.2016.05.040 full_text_status: none publication: Sensors and Actuators, A: Physical volume: 247 pagerange: 227-233 refereed: TRUE issn: 09244247 citation: Krishnan, G. and Bidin, N. and Abdullah, M. and Ahmad, M.F.S. and Bakar, M.A.A. and Yasin, M. (2016) Liquid refractometer based mirrorless fiber optic displacement sensor. Sensors and Actuators, A: Physical, 247. pp. 227-233. ISSN 09244247