PERFORMANCE ANALYSIS OF SCATTERING-LEVEL MULTIPLEXING (SLMUX) IN DISTRIBUTED FIBER-OPTIC BACKSCATTER REFLECTOMETRY PHYSICAL SENSORS
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Date
2020-05
Authors
Tosi, Daniele
Molardi, Carlo
Blanc, Wilfried
Paixão, Tiago
Antunes, Paulo
Marques, Carlos
Journal Title
Journal ISSN
Volume Title
Publisher
MDPI
Abstract
Optical backscatter reflectometry (OBR) is a method for the interrogation of Rayleigh
scattering occurring in each section of an optical fiber, resulting in a single-fiber-distributed sensor
with sub-millimeter spatial resolution. The use of high-scattering fibers, doped with MgO-based
nanoparticles in the core section, provides a scattering increase which can overcome 40 dB. Using
a configuration-labeled Scattering-Level Multiplexing (SLMux), we can arrange a network of
high-scattering fibers to perform a simultaneous scan of multiple fiber sections, therefore extending
the OBR method from a single fiber to multiple fibers. In this work, we analyze the performance and
boundary limits of SLMux, drawing the limits of detection of N-channel SLMux, and evaluating the
performance of scattering-enhancement methods in optical fibers.
Description
Keywords
optical fiber sensors, optical backscatter reflectometry (OBR), distributed sensors, scattering-level multiplexing, Rayleigh scattering, Research Subject Categories::TECHNOLOGY
Citation
Tosi, D., Molardi, C., Blanc, W., Paixão, T., Antunes, P., & Marques, C. (2020). Performance Analysis of Scattering-Level Multiplexing (SLMux) in Distributed Fiber-Optic Backscatter Reflectometry Physical Sensors. Sensors, 20(9), 2595. https://doi.org/10.3390/s20092595