Title :
Advanced cyclic coding technique for long-range Raman DTS systems with meter-scale spatial resolution over standard SMF
Author :
Soto, Marcelo A. ; Nannipieri, Tiziano ; Signorini, Alessandro ; Bolognini, Gabriele ; Pasquale, Fabrizio Di ; Lazzeri, Andrea ; Baronti, Federico ; Roncella, Roberto
Author_Institution :
Scuola Superiore Sant´´Anna, Pisa, Italy
Abstract :
A long-range fast-measurement Raman-based distributed temperature sensor (RDTS) with a meter spatial resolution exploiting a quasi-periodic pulse-coding technique is proposed in this paper. We experimentally demonstrate the feasibility of temperature sensing over 26 km standard single-mode fiber with 1 m spatial resolution obtaining 3°C of temperature resolution within 30 s of measurement time. Experimental results employing 1023-bits codewords are also reported, showing a notable range enhancement and enabling distributed sensing over 58 km distance with 2 m spatial resolution and 4°C of temperature resolution within 5 min measurement time.
Keywords :
cyclic codes; temperature sensors; RTDS; advanced cyclic coding technique; distance 2 m; long-range Raman DTS systems; long-range fast-measurement Raman-based distributed temperature sensor; meter spatial resolution; meter-scale spatial resolution; quasi-periodic pulse-coding technique; standard SMF; temperature 3 degC; temperature 4 degC; time 30 s; word length 1023 bit; Encoding; Optical fiber sensors; Optical fibers; Spatial resolution; Temperature measurement; Temperature sensors;
Conference_Titel :
Sensors, 2011 IEEE
Conference_Location :
Limerick
Print_ISBN :
978-1-4244-9290-9
DOI :
10.1109/ICSENS.2011.6127331