Six-beam homodyne laser Doppler vibrometry based on silicon photonics technology

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Six-beam homodyne laser Doppler vibrometry based on silicon photonics technology

Li, Yanlu; Zhu, Jinghao; Duperron, Matthieu; O'Brien, Peter; Schüler, Ralf; Aasmul, Soren; de Melis, Mirko; Kersemans, Mathias; Baets, Roel
Date: 2018
Copyright: © 2018, Optical Society of America under the terms of the OSA Open Access Publishing Agreement
Copyright information: https://www.osapublishing.org/library/license_v1.cfm#VOR-OA
Related: https://www.osapublishing.org/oe/abstract.cfm?uri=oe-26-3-3638
Citation: Li, Y., Zhu, J., Duperron, M., O’Brien, P., Schüler, R., Aasmul, S., de Melis, M., Kersemans, M. and Baets, R. (2018) 'Six-beam homodyne laser Doppler vibrometry based on silicon photonics technology', Optics Express, 26(3), pp. 3638-3645. doi: 10.1364/OE.26.003638
Published Version: 10.1364/OE.26.003638

Abstract:

This paper describes an integrated six-beam homodyne laser Doppler vibrometry (LDV) system based on a silicon-on-insulator (SOI) full platform technology, with on-chip photo-diodes and phase modulators. Electronics and optics are also implemented around the integrated photonic circuit (PIC) to enable a simultaneous six-beam measurement. Measurement of a propagating guided elastic wave in an aluminum plate (speed ≈≈ 909 m/s @ 61.5 kHz) is demonstrated.

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