14 September 2016 Single mode optical fiber vibration sensor: design and development
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Abstract
This work deals with the design and development of an SMF28-based vibration detector including the fiber segment, the data acquisition via an NI-USB-6212 card, the data processing code in Visual Basic and the signal spectrum obtained via Fourier analysis. The set-up consists of a regulated voltage source at 2.6V, 300mA, which serves as the power source for a 980nm semiconductor laser operating at 150mW which is fiber coupled into a 20m-piece of SMF-28 fiber. Perpendicular to such fiber the perturbations ranged from 1 to 100 kHz, coming from a DC motor at 12 Volts. At the detection stage, a simple analog filter and a commercial photo diode were employed for data acquisition, before a transimpedance amplification stage reconstructed the signal into the National Instruments data acquisition card. At the output, the signals Fourier transformation allows the signal to be displayed in a personal computer. The presentation will include a full electrical and optical characterization of the device and preliminary sensing results, which could be suitable for structural health monitoring applications.
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L. E. Alanis-Carranza, L. E. Alanis-Carranza, J. A. Alvarez-Chavez, J. A. Alvarez-Chavez, G. G. Perez-Sanchez, G. G. Perez-Sanchez, A. Sierra-Calderon, A. Sierra-Calderon, J. C. Rodriguez-Novelo, J. C. Rodriguez-Novelo, "Single mode optical fiber vibration sensor: design and development", Proc. SPIE 9973, Infrared Remote Sensing and Instrumentation XXIV, 99730U (14 September 2016); doi: 10.1117/12.2237925; https://doi.org/10.1117/12.2237925
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