8 September 2010 Dynamic interrogation of long period gratings with modulated fibre Bragg gratings
Author Affiliations +
Proceedings Volume 7653, Fourth European Workshop on Optical Fibre Sensors; 76532C (2010) https://doi.org/10.1117/12.866444
Event: (EWOFS'10) Fourth European Workshop on Optical Fibre Sensors, 2010, Porto, Portugal
Abstract
It is reported a LPG dynamic interrogation technique based on the modulation of fibre Bragg gratings located in the readout unit that permits to attenuate the effect of the 1/f noise of the electronics in the resolution of the LPG-based sensing head. The concept is tested to detect variations of the external refractive index and a resolution of 2.0×10-4 NIR was achieved without system optimization. Additionally, the effect in the sensor resolution when introducing Erbium and Raman optical amplification is experimentally investigated.
© (2010) COPYRIGHT Society of Photo-Optical Instrumentation Engineers (SPIE). Downloading of the abstract is permitted for personal use only.
J. P. Carvalho, L. Coelho, L. Correia, O. Frazão, P. A. S. Jorge, J. M. Baptista, I. Dias, J. L. Santos, J. Weyl, M. J. Pontes, M. A. Martinez, A. P. Barbero, R. M. Ribeiro, A. J. G. Abelém, M. T. R. Giraldi, "Dynamic interrogation of long period gratings with modulated fibre Bragg gratings", Proc. SPIE 7653, Fourth European Workshop on Optical Fibre Sensors, 76532C (8 September 2010); doi: 10.1117/12.866444; https://doi.org/10.1117/12.866444
PROCEEDINGS
4 PAGES


SHARE
RELATED CONTENT

Remote fiber sensors and optical amplification
Proceedings of SPIE (November 18 2013)
Towards a transparent network
Proceedings of SPIE (September 01 1990)
Properties and applications of fiber gratings
Proceedings of SPIE (September 25 2001)
Optical water-level sensing systems using fiber Bragg grating
Proceedings of SPIE (September 09 2002)

Back to Top