
Proceedings Paper
Remote optical fiber sensor based on an LPG sensor head with Raman amplification optimized by numerical methodsFormat | Member Price | Non-Member Price |
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Paper Abstract
In this work, we analyze a remote optical sensor system based on Raman amplification, composed by one Long Period
Grating (LPG) as a sensor head, separated by 50 km from the optical source, and the interrogation unit composed by two
Fiber Bragg Gratings (FBGs) modulated by two Piezoelectrics Transductors (PZTs). Optical fiber sensor systems are
typically limited to operate at distances of only few kilometers due to the attenuation effects and noise present in the
optical fiber that adversely affects the performance of the sensor interrogation process. We present experimental and
simulated results obtained in the context of the analysis of remote optical fiber sensors. The simulation models compute
the Raman interaction between the pumps and the sensor signals and allow speeding up the analyses regarding the setup
to be experimentally implemented in order to measure/monitor environmental temperature. Experimental results
obtained in the implemented setup show that under Raman amplification the power ratio between the two central
wavelengths of the FBGs has a linear relation with the change of the LPG resonance induced by environmental
temperature.
Paper Details
Date Published: 9 May 2012
PDF: 9 pages
Proc. SPIE 8439, Optical Sensing and Detection II, 84392A (9 May 2012); doi: 10.1117/12.923002
Published in SPIE Proceedings Vol. 8439:
Optical Sensing and Detection II
Francis Berghmans; Anna Grazia Mignani; Piet De Moor, Editor(s)
PDF: 9 pages
Proc. SPIE 8439, Optical Sensing and Detection II, 84392A (9 May 2012); doi: 10.1117/12.923002
Show Author Affiliations
Thiago V. N. Nogueira Coelho, UFES (Brazil)
Joel P. Carvalho, INESC TEC (Portugal)
M. J. Pontes, UFES (Brazil)
Joel P. Carvalho, INESC TEC (Portugal)
M. J. Pontes, UFES (Brazil)
Published in SPIE Proceedings Vol. 8439:
Optical Sensing and Detection II
Francis Berghmans; Anna Grazia Mignani; Piet De Moor, Editor(s)
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