Enhancing the measurement range of a Brillouin-based fibre optic distributed-temperature sensor by improving receiver sensitivity through optical preamplification
de Souza, Keith P. and Newson, Trevor P. (2004) Enhancing the measurement range of a Brillouin-based fibre optic distributed-temperature sensor by improving receiver sensitivity through optical preamplification. In, Fiber Optic Sensor Technology and Applications III. Optics East 2004 Bellingham, USA, The International Society for Optical Engineering (SPIE), 325-336. (doi:10.1117/12.573259).
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Description/Abstract
We report on the use of a cost-effective erbium-doped based optical preamplifier in a single-ended distributed fiber-optic sensor to improve receiver sensitivity and hence measurement range. The improved accuracy of spontaneous Brillouin measurements was demonstrated in a 23km sensor and was limited by amplified spontaneous emission from the preamplifier, which was verified theoretically. Reduction of amplified spontaneous emission was achieved with a 0.37nm in-fiber Bragg grating. A signal-to-noise improvement of 17dB was achieved and supported by theory, which translates to approximately 40km range improvement for a single-mode sensing fiber having losses of 0.2dB/km at 1550nm.
| Item Type: | Book Section |
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| Related URLs: | |
| Subjects: | Q Science > QC Physics T Technology > TK Electrical engineering. Electronics Nuclear engineering |
| Divisions: | University Structure - Pre August 2011 > Optoelectronics Research Centre |
| Item ID: | 47899 |
| Date Deposited: | 10 Aug 2007 |
| Last Modified: | 01 Oct 2012 15:20 |
| Contributors: | de Souza, Keith P. (Author) Newson, Trevor P. (Author) |
| Date: | October 2004 |
| Status: | Published |
| Publisher: | The International Society for Optical Engineering (SPIE) |
| URI: | http://eprints.soton.ac.uk/id/eprint/47899 |
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