Transient response in high-resolution Brillouin-based distributed sensing using probe pulses shorter than the acoustic relaxation time
Data(s) |
01/02/2000
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Resumo |
We perform numerical simulations on a model describing a Brillouin-based temperature and strain sensor, testing its response when it is probed with relatively short pulses. Experimental results were recently published [e.g., Opt. Lett. 24, 510 (1999)] that showed a broadening of the Brillouin loss curve when the probe pulse duration is reduced, followed by a sudden and rather surprising reduction of the linewidth when the pulse duration gets shorter than the acoustic relaxation time. Our study reveals the processes responsible for this behavior. We give a clear physical insight into the problem, allowing us to define the best experimental conditions required for one to take the advantage of this effect. |
Formato |
application/pdf |
Identificador |
http://eprints.aston.ac.uk/12650/1/transient_response.pdf Lecoeuche, V.; Webb, David J.; Pannell, C.N. and Jackson, David A. (2000). Transient response in high-resolution Brillouin-based distributed sensing using probe pulses shorter than the acoustic relaxation time. Optics letters, 25 (3), pp. 156-158. |
Relação |
http://www.opticsinfobase.org/abstract.cfm?URI=ol-25-3-156 . http://eprints.aston.ac.uk/12650/ |
Tipo |
Article PeerReviewed |