English   español  
Por favor, use este identificador para citar o enlazar a este item: http://hdl.handle.net/10261/111592
logo share SHARE logo core CORE   Add this article to your Mendeley library MendeleyBASE

Visualizar otros formatos: MARC | Dublin Core | RDF | ORE | MODS | METS | DIDL
Exportar a otros formatos:

Phase-sensitive optical time domain reflectometer assisted by first-order raman amplification for distributed vibration sensing over >100 km

AutorMartins, H.F.; Martín-López, Sonia; Corredera, Pedro ; Filograno, M.L.; Frazao, O.; Gonzalez-Herráez, M.
Palabras clavePhase-sensitive optical time domain reflectometry (OTDR)
Vibration sensor
Optical fiber sensors
Raman scattering
Distributed sensor
Fecha de publicación2014
EditorInstitute of Electrical and Electronics Engineers
CitaciónJournal of Lightwave Technology 32: 1510- 1518 (2014)
ResumenIn this study, the authors present an experimental and theoretical description of the use of first order Raman amplification to improve the performance of a Phase-sensitive optical time domain reflectometer (φ OTDR) when used for vibration measurements over very long distances. A special emphasis is given to the noise which is carefully characterized and minimized along the setup. A semiconductor optical amplifier and an optical switch are used to greatly decrease the intra-band coherent noise of the setup and balanced detection is used to minimize the effects of RIN transferred from the Raman pumps. The sensor was able to detect vibrations of up to 250 Hz (close to the limits set by the time of flight of light pulses) with a resolution of 10 m in a range of 125 km. To achieve the above performance, no post-processing was required in the φOTDR signal. The evolution of the φOTDR signal along the fiber is also shown to have a good agreement with the theoretical model. © 1983-2012 IEEE.
Identificadoresdoi: 10.1109/JLT.2014.2308354
issn: 0733-8724
Aparece en las colecciones: (CFMAC-IO) Artículos
Ficheros en este ítem:
Fichero Descripción Tamaño Formato  
accesoRestringido.pdf15,38 kBAdobe PDFVista previa
Mostrar el registro completo

Artículos relacionados:

NOTA: Los ítems de Digital.CSIC están protegidos por copyright, con todos los derechos reservados, a menos que se indique lo contrario.