Lecoeuche, V. and Webb, D.J. and Pannell, C.N. and Jackson, D.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. ISSN 0146-9592.
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Abstract
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.
| Item Type: | Article |
|---|---|
| Subjects: | Q Science |
| Divisions: | Faculties > Science Technology and Medical Studies > School of Physical Sciences > Optics Faculties > Science Technology and Medical Studies > School of Physical Sciences |
| Depositing User: | O.O. Odanye |
| Date Deposited: | 02 Apr 2009 12:37 |
| Last Modified: | 17 Jul 2012 10:15 |
| Resource URI: | http://kar.kent.ac.uk/id/eprint/16304 (The current URI for this page, for reference purposes) |
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