Spatial multiplexing of refractive index distributed sensors by means of high-scattering MgO nanoparticle doped optical fiber

M. Shaimerdenova; A. Bekmurzayeva; T. Ayupova; M. Sypabekova; S. Korganbayev; R. Dukenbayev; W. Blanc; C. Molardi; D. Tosi

doi:10.1117/12.2545468

20 February 2020 Spatial multiplexing of refractive index distributed sensors by means of high-scattering MgO nanoparticle doped optical fiber

M. Shaimerdenova, A. Bekmurzayeva, T. Ayupova, M. Sypabekova, S. Korganbayev, R. Dukenbayev, W. Blanc, C. Molardi, D. Tosi

Author Affiliations +

Proceedings Volume 11233, Optical Fibers and Sensors for Medical Diagnostics and Treatment Applications XX; 112330U (2020) https://doi.org/10.1117/12.2545468
Event: SPIE BiOS, 2020, San Francisco, California, United States

Abstract

A reflector-less refractive index fiber sensor, exploiting the high-scattering of a MgO nanoparticle (NP) fiber, is proposed. The sensor is obtained by etching the fiber to expose the core to the surrounding analyte, and the backscattering signal is read by an Optical Backscatter Reflectometer (OBR). This approach permits distributed sensing, offered by OBR detection, and permits spatial-multiplexing of parallel sensors, thanks to the scattering-level multiplexing (SLMux) of the NP-doped fiber. Simultaneous physical properties detection is also possible. Experiments, performed to detect refractive index and temperature, showed a sensitivity of roughly 0.6 nm/RIU, with a simultaneous measurement of 100°C of temperature.

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M. Shaimerdenova, A. Bekmurzayeva, T. Ayupova, M. Sypabekova, S. Korganbayev, R. Dukenbayev, W. Blanc, C. Molardi, and D. Tosi "Spatial multiplexing of refractive index distributed sensors by means of high-scattering MgO nanoparticle doped optical fiber", Proc. SPIE 11233, Optical Fibers and Sensors for Medical Diagnostics and Treatment Applications XX, 112330U (20 February 2020); https://doi.org/10.1117/12.2545468

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