Long-range high-spatial-resolution distributed Brillouin sensing enabled by correlation-domain encoding.
Opt Lett
; 48(12): 3143-3146, 2023 Jun 15.
Article
en En
| MEDLINE
| ID: mdl-37319047
ABSTRACT
A hybrid aperiodic-coded Brillouin optical correlation domain analysis (HA-coded BOCDA) fiber sensor is proposed to achieve long-range high-spatial-resolution distributed measurement. It is found that high-speed phase modulation in the BOCDA actually forms a special energy transformation mode. This mode can be exploited to suppress all detrimental effects parasitized in a pulse coding-induced cascaded stimulated Brillouin scattering (SBS) process and thereby enable the HA-coding to reach its full potential to improve the BOCDA performance. As a result, under a low system complexity and an enhanced measurement speed, a 72.65-km sensing range and a 5-cm spatial resolution are achieved with a temperature/strain measurement accuracy of 2â/40 µÎµ.
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Bases de datos:
MEDLINE
Asunto principal:
Fibras Ópticas
Idioma:
En
Revista:
Opt Lett
Año:
2023
Tipo del documento:
Article