TY - JOUR N1 - cited By 12 A1 - Krishnan, G. A1 - Bidin, N. A1 - Abdullah, M. A1 - Ahmad, M.F.S. A1 - Bakar, M.A.A. A1 - Yasin, M. UR - https://www.scopus.com/inward/record.uri?eid=2-s2.0-84974794779&doi=10.1016%2fj.sna.2016.05.040&partnerID=40&md5=1b709834094d8532f3f28b03fdfa31d4 Y1 - 2016/// VL - 247 JF - Sensors and Actuators, A: Physical EP - 233 ID - scholars6874 TI - Liquid refractometer based mirrorless fiber optic displacement sensor KW - Fiber optic sensors; Fibers; Liquids; Refractive index; Refractometers; Sensors KW - Displacement; Fiber optic displacement sensor; Intensity modulations; Liquid refractometers; Mirrorless; Peak voltage; Refractometer sensors; Sensitivity KW - Fiber optics SN - 09244247 N2 - 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. AV - none PB - Elsevier B.V. SP - 227 ER -