Abstract
We present a novel scheme aimed to improve spectral resolution in Brillouin distributed sensors based on single-mode standard fibers. The method makes use of two frequency-shifted optical pairs, the first one (the "writing" pair) devoted to excite the acoustic wave and the second one (the "reading" pair) employed to perform Brillouin gain interrogation. A numerical analysis demonstrates the capability of the method to ensure high spectral resolution even when operating in the high-spatial-resolution (~1 m or less) regime. Preliminary experimental results carried out at 1-m spatial resolution are also reported.
Original document
The different versions of the original document can be found in:
- https://doi.org/10.1109/jphot.2012.2219301 under the license implied-oa
Document information
Published on 01/01/2012
Volume 2012, 2012
DOI: 10.1109/jphot.2012.2219301
Licence: Other
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