Sensitivity Improvement of Phi-OTDR by Fiber Cable Coils
| Autor: | Kirill I. Koshelev, K. V. Stepanov, Alexey B. Pnev, A. O. Chernutsky, Roman I. Khan, A. A. Zhirnov |
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| Jazyk: | angličtina |
| Rok vydání: | 2021 |
| Předmět: |
Optical fiber cable
Materials science business.industry Chemical technology Communication distributed fiber optic sensor TP1-1185 Optical time-domain reflectometer Biochemistry Atomic and Molecular Physics and Optics Analytical Chemistry law.invention phi-OTDR sensitivity improvement Optics Amplitude law Fiber optic sensor fiber optic sensor Fiber Optic Technology Fiber Electrical and Electronic Engineering business Instrumentation Sensitivity (electronics) |
| Zdroj: | Sensors (Basel, Switzerland) Sensors, Vol 21, Iss 7077, p 7077 (2021) |
| ISSN: | 1424-8220 |
| Popis: | 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. |
| Databáze: | OpenAIRE |
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