Improved synthetic-heterodyne Michelson interferometer vibrometer using phase and gain control feedback.

  title={Improved synthetic-heterodyne Michelson interferometer vibrometer using phase and gain control feedback.},
  author={Jose H. Galeti and Cl{\'a}udio Kitano and Michael J. Connelly},
  journal={Applied optics},
  volume={54 35},
Synthetic-heterodyne demodulation is a useful technique for dynamic displacement and velocity measurement using interferometric sensors as it can provide an output signal which is immune to interferometric drift. With the advent of cost effective, high-speed real-time signal processing systems and software, processing of the complex signals encountered in interferometry has become more feasible. In conventional synthetic-heterodyne demodulation schemes, to obtain the dynamic displacement or… CONTINUE READING
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