Wavelength domain multiplexed fiber specklegram sensor

L. Rodriguez-Cobo; M. Lomer; A. Cobo; E. Real; J. M. Lopez-Higuera

doi:10.1117/12.2059553

2 June 2014 Wavelength domain multiplexed fiber specklegram sensor

L. Rodriguez-Cobo, M. Lomer, A. Cobo, E. Real, J. M. Lopez-Higuera

Proceedings Volume 9157, 23rd International Conference on Optical Fibre Sensors; 91579K (2014) https://doi.org/10.1117/12.2059553
Event: OFS2014 23rd International Conference on Optical Fiber Sensors, 2014, Santander, Spain

Abstract

In this work, a low-cost WDM interrogation system has been proposed and experimentally tested to obtain two independent channels of a fiber specklegram sensor. Two lasers of different wavelengths have been launched into two multimode Polymer Optical Fibers (POFs) and then combined through a coupler before their interrogation using a RBG camera. By analyzing each color of the video sequence, the two fiber channels can be independently obtained. Besides, the speckle sensitivity has been also studied by analyzing different properties of speckle patterns such as their contrast or the speckle size. The achieved results help to the development of new fiber specklegram sensors by allowing a direct comparison between two specklegrams of different properties.

Citation Download Citation

L. Rodriguez-Cobo, M. Lomer, A. Cobo, E. Real, and J. M. Lopez-Higuera "Wavelength domain multiplexed fiber specklegram sensor", Proc. SPIE 9157, 23rd International Conference on Optical Fibre Sensors, 91579K (2 June 2014); https://doi.org/10.1117/12.2059553

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