Sensitivity Improvement of Phi-OTDR by Fiber Cable Coils.
Sensors (Basel)
; 21(21)2021 Oct 26.
Article
em En
| MEDLINE
| ID: mdl-34770385
ABSTRACT
We present a theoretical and experimental study in which we increased the sensitivity of a phase-sensitive optical time-domain reflectometer (phi-OTDR). This was achieved by constructing coils in the sensor cable, which increased the total amplitude of the impact on the fiber. We demonstrate this theoretically using the example of a phase-sensitive reflectometer model and practically in testing grounds with a buried nearby conventional sensor and a sensor with coils. The sensitivity increased 2.2 times. We detected 95% of events when using coils, versus 20% when using a straight cable. The suggested method does not require any modifications to the device.
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Coleções:
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Base de dados:
MEDLINE
Assunto principal:
Tecnologia de Fibra Óptica
Tipo de estudo:
Diagnostic_studies
Idioma:
En
Revista:
Sensors (Basel)
Ano de publicação:
2021
Tipo de documento:
Article
País de afiliação:
Federação Russa