Lecoeuche, V. and Webb, David J. and Pannell, Christopher 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. ISSN 0146-9592. (The full text of this publication is not currently available from this repository. You may be able to access a copy if URLs are provided)
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.
|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:||23 May 2014 11:14|
|Resource URI:||https://kar.kent.ac.uk/id/eprint/16304 (The current URI for this page, for reference purposes)|