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40 km long-range Raman-based distributed temperature sensor with meter-scale spatial resolution
Fiber optics sensors Scattering Raman
2015/6/10
We propose a new Raman based distributed measurement technique which allows for temperature sensing over nearly 40 km of graded index multimode optical fiber with meter-scale spatial resolution and te...
Optical Pulse Coding Applied to Distributed Temperature Sensor Using Coherent Detection of Spontaneous Brillouin Frequency Shift
Optical Pulse Coding Applied Distributed Temperature Sensor Spontaneous Brillouin Frequency Shift
2015/8/3
A 53-km Simplex-coded distributed temperature sensor based on coherent detection of Brillouin frequency shift is demonstrated with 1.1 K and 35 m resolutions, using only 10 mW input peak power.