Multichannel WDM vibrometry at 1550 nm


  • Adam Tomasz Waz Wroclaw University of Technology
  • Grzegorz Dudzik Wroclaw University of Technology
  • Pawel Roman Kaczmarek Wroclaw University of Technology
  • Krzysztof Marek Abramski Wroclaw University of Technology



We present a multichannel laser-fiber vibrometer concept, realization and obtained results. The vibrometer is based on the WDM (Wavelength Division Multiplexing) telecommunication technique and operates at 1550 nm region. Four independent fibre-coupled laser diodes form a system of sources for multipoint vibration measurement according to the rule "one wavelength-one point". Such solution minimize crosstalk between channels and allows to arrange a measuring points freely. Our system measure vibrations at four points simultaneously. It allows to phase-relation measurements between vibrating points. Additionally it is all fiber design thus it gives possibility to measure vibrations in hard to reach places.

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How to Cite

A. T. Waz, G. Dudzik, P. R. Kaczmarek, and K. M. Abramski, “Multichannel WDM vibrometry at 1550 nm”, Photonics Lett. Pol., vol. 6, no. 4, pp. pp. 133–135, Dec. 2014.