Six-beam homodyne laser Doppler vibrometry based on silicon photonics technology
- Li, Yanlu
- Zhu, Jinghao
- Duperron, Matthieu
- O'Brien, Peter A.
- Schüler, Ralf
- Aasmul, Soren
- de Melis, Mirko
- Kersemans, Mathias
- Baets, Roel
Publication date
January 2018
DOI Publisher
The Optical Society ISSN
1094-4087 Journal
Optics ExpressAbstract
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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