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 the 1550 nm region. Four independent fiber-coupled laser diodes form a system of sources for multipoint vibration measurement according to the rule "one wavelength–one point". Such a solution minimizes crosstalk between channels and allows to arrange measuring points freely. Our system measures vibrations at four points simultaneously. It allows phase-relation measurements between vibrating points. Additionally, it is an all fiber design thus it gives the possibility to measure vibrations in hard-to-reach places.
CITATION STYLE
Wąż, A. T., Dudzik, G., Kaczmarek, P. R., & Abramski, K. M. (2014). Multichannel WDM vibrometry at 1550 nm. Photonics Letters of Poland, 6(4), 133–135. https://doi.org/10.4302/plp.2014.4.07
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