| Autor: |
Ozcáriz, Aritz, Weber, Guilherme Heim, Fernandes Gomes, Danilo, Vieira da Costa, Igor Brutkowski, Rodolfo Galvão, José, Matheus Martins, Victor, Pipa, Daniel R., Silva, Marco J., Cardozo da Silva, Jean Carlos, Ruiz Zamarreño, Carlos, Martelli, Cicero |
| Předmět: |
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| Zdroj: |
Journal of Microwaves, Optoelectronics & Electromagnetic Applications; Mar2023, Vol. 22 Issue 1, p77-90, 14p |
| Abstrakt: |
In this work, measuring capabilities of a Sagnac Interferometer-based Distributed Optical Fiber Sensor (DOFS) system are demonstrated by comparing its results to a conventional amplitude-based Distributed Acoustic Sensing (DAS) system. Through a set of three different experiments, it was demonstrated that both sensing systems can detect and locate dynamical deformation along the fiber, in addition to determining its frequency components. The coherent amplitude-based DAS presented a lower background noise. In contrast, even though the Sagnac interferometry-based system presented low-frequency noise in the measurements, it is less susceptible to harmonic distortion for higher amplitude deformations since its sensing principles rely on the measurement of the accumulated phase rather than the amplitude of the backscattered signal purely. Accordingly, the Sagnac interferometry-based system arises as a promising and rather accessible topology for a DOFS implementation. [ABSTRACT FROM AUTHOR] |
| Databáze: |
Complementary Index |
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