Hybrid distributed acoustic and temperature sensor using a commercial off-the-shelf DFB laser and direct detection

We demonstrate a hybrid distributed acoustic and temperature sensor (DATS) using a commercial off-the-shelf (COTS) distributed feedback (DFB) laser, a single-mode optical fiber, and a common receiver block. We show that the spectral and frequency noise characteristics of the laser, combined with a s...

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Vydáno v:Optics letters Ročník 41; číslo 3; s. 587 - 590
Hlavní autoři: Muanenda, Yonas, Oton, Claudio J, Faralli, Stefano, Nannipieri, Tiziano, Signorini, Alessandro, Di Pasquale, Fabrizio
Médium: Journal Article
Jazyk:angličtina
Vydáno: United States 01.02.2016
ISSN:1539-4794
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Abstract We demonstrate a hybrid distributed acoustic and temperature sensor (DATS) using a commercial off-the-shelf (COTS) distributed feedback (DFB) laser, a single-mode optical fiber, and a common receiver block. We show that the spectral and frequency noise characteristics of the laser, combined with a suitable modulation scheme, ensure the inter-pulse incoherence and intra-pulse coherence conditions required for exploiting the fast denoising benefits of cyclic Simplex pulse coding in the hybrid measurement. The proposed technique enables simultaneous, distributed measurement of vibrations and temperature, with key industrial applications in structural health monitoring and industrial process control systems. The sensor is able to clearly identify a 500 Hz vibration at 5 km distance along a standard single-mode fiber and simultaneously measure the temperature profile along the same fiber with a temperature resolution of less than 0.5°C with 5 m spatial resolution.
AbstractList We demonstrate a hybrid distributed acoustic and temperature sensor (DATS) using a commercial off-the-shelf (COTS) distributed feedback (DFB) laser, a single-mode optical fiber, and a common receiver block. We show that the spectral and frequency noise characteristics of the laser, combined with a suitable modulation scheme, ensure the inter-pulse incoherence and intra-pulse coherence conditions required for exploiting the fast denoising benefits of cyclic Simplex pulse coding in the hybrid measurement. The proposed technique enables simultaneous, distributed measurement of vibrations and temperature, with key industrial applications in structural health monitoring and industrial process control systems. The sensor is able to clearly identify a 500 Hz vibration at 5 km distance along a standard single-mode fiber and simultaneously measure the temperature profile along the same fiber with a temperature resolution of less than 0.5°C with 5 m spatial resolution.
Author Signorini, Alessandro
Oton, Claudio J
Nannipieri, Tiziano
Di Pasquale, Fabrizio
Faralli, Stefano
Muanenda, Yonas
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BackLink https://www.ncbi.nlm.nih.gov/pubmed/26907430$$D View this record in MEDLINE/PubMed
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