Refractive index and viscosity: dual sensing with plastic fibre gratings

Ricardo Ferreira; Lúcia Bilro; Carlos Marques; Ricardo Oliveira; Rogério Nogueira

doi:10.1117/12.2058833

2 June 2014 Refractive index and viscosity: dual sensing with plastic fibre gratings

Ricardo Ferreira, Lúcia Bilro, Carlos Marques, Ricardo Oliveira, Rogério Nogueira

Proceedings Volume 9157, 23rd International Conference on Optical Fibre Sensors; 915793 (2014) https://doi.org/10.1117/12.2058833
Event: OFS2014 23rd International Conference on Optical Fiber Sensors, 2014, Santander, Spain

Abstract

A refractive index and viscosity sensor based on FBGs in mPOF is reported for the first time. The refractive index was measured with a sensitivity of -10:98nm=RIU and a resolution of 1 – 10-4RIU. Viscosity measurements were performed with acousto-optic modulation, obtaining a sensitivity of -94:42%=mPa • s and a resolution of 0:06mPa • s.

Citation Download Citation

Ricardo Ferreira, Lúcia Bilro, Carlos Marques, Ricardo Oliveira, and Rogério Nogueira "Refractive index and viscosity: dual sensing with plastic fibre gratings", Proc. SPIE 9157, 23rd International Conference on Optical Fibre Sensors, 915793 (2 June 2014); https://doi.org/10.1117/12.2058833

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