Brillouin-based fiber-optic distributed temperature sensor with optical preamplification
De Souza, K. and Newson, T.P. (2000) Brillouin-based fiber-optic distributed temperature sensor with optical preamplification. Optics Letters, 25, (18), 1331-1333.
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Official URL: http://ol.osa.org/abstract.cfm?id=62162
Description/Abstract
Optical preamplification has been used in a fiber-optic distributed temperature sensor based on spontaneous Brillouin scattering and the use of direct detection, resulting in improved signal-to-noise ratios. The fiber-based optical preamplifier system comprises a three-port circulator, an erbium-doped fiber amplifier with a small-signal gain of 27dB, and a fiber Bragg grating with 47-GHz bandwidth. An improvement of 17dB in the optical signal-to-noise ratio for the Brillouin signal is demonstrated in a 23-km sensor. The limit to the signal-to-noise ratio is attributed to spontaneous spontaneous beat noise generated at the photodetector by amplified spontaneous emission from the optical amplifier.
| Item Type: | Article |
|---|---|
| Related URLs: | http://ol.osa.org/abstract.cfm?id=62162 |
| Subjects: | Q Science > QC Physics T Technology > TK Electrical engineering. Electronics Nuclear engineering |
| Divisions: | University Structure - Pre August 2011 > Optoelectronics Research Centre |
| ePrint ID: | 13613 |
| Deposited On: | 31 Dec 2004 |
| Last Modified: | 26 Mar 2010 17:18 |
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