Common frequency suppression method for fiber specklegram perimeter sensors

L. Rodriguez-Cobo; M. Lomer; J. M. Lopez-Higuera

doi:10.1117/12.2194297

28 September 2015 Common frequency suppression method for fiber specklegram perimeter sensors

L. Rodriguez-Cobo, M. Lomer, J. M. Lopez-Higuera

Proceedings Volume 9634, 24th International Conference on Optical Fibre Sensors; 96343R (2015) https://doi.org/10.1117/12.2194297
Event: International Conference on Optical Fibre Sensors (OFS24), 2015, Curitiba, Brazil

Abstract

In this work, a frequency based processing scheme has been employed to improve the sensitivity of Fiber Specklegram Sensors (FSSs) applied to perimeter fences. Based on 1.8 km of multimode fiber, two laser sources with different spectral properties have been employed to feed the optical fiber. These two laser sources provoke sensing systems with very different SNRs to which the common frequency suppression method has been applied. The final results suggest enough improvement on SNR to reduce the quality of the laser source on perimeter sensors, also decreasing the final cost.

Citation Download Citation

L. Rodriguez-Cobo, M. Lomer, and J. M. Lopez-Higuera "Common frequency suppression method for fiber specklegram perimeter sensors", Proc. SPIE 9634, 24th International Conference on Optical Fibre Sensors, 96343R (28 September 2015); https://doi.org/10.1117/12.2194297

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