High spatial resolution distributed optical fibre dynamic strain sensor with enhanced frequency and strain resolution
نویسندگان
چکیده
A distributed optical fibre dynamic strain sensor with high spatial and frequency resolution is demonstrated. The sensor which uses φ-OTDR interrogation technique exhibited a higher sensitivity thanks to an improved optical arrangement and a new signal processing procedure. The proposed sensing system is capable of fully quantifying multiple dynamic perturbations along a 5km long sensing fibre with a frequency and spatial resolution of 5Hz and 50cm, respectively. The strain resolution of the sensor was measured to be 40ne.
منابع مشابه
High spatial resolution distributed optical fiber dynamic strain sensor with enhanced frequency and strain resolution.
A distributed optical fiber dynamic strain sensor with high spatial and frequency resolution is demonstrated. The sensor, which uses the ϕ-OTDR interrogation technique, exhibited a higher sensitivity thanks to an improved optical arrangement and a new signal processing procedure. The proposed sensing system is capable of fully quantifying multiple dynamic perturbations along a 5 km long sensing...
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