An investigation of fidelity regions in the dual-pulse 𝝓-OTDR systems
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2021
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Source Title
Optical Sensors 2021
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The Optical Society
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Abstract
The dual-pulse interrogation enables the phase extraction from the intensity of the backreflection signal in 𝜙-OTDR systems. We investigate the high and low fidelity regions in the back-reflected signal by analyzing the system response to external disturbances.