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

Waz, A. T., Dudzik, G., Kaczmarek, P. R., & Abramski, K. M. (2014). Multichannel WDM vibrometry at 1550 nm. Photonics Letters of Poland, 6(4), pp. 133–135. lett. pl.v6i4.528