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Conference Paper

Towards a FPGA-controlled deep phase modulation interferometer

MPS-Authors
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Gerberding,  O.
Laser Interferometry & Gravitational Wave Astronomy, AEI-Hannover, MPI for Gravitational Physics, Max Planck Society;

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Heinzel,  G.
Laser Interferometry & Gravitational Wave Astronomy, AEI-Hannover, MPI for Gravitational Physics, Max Planck Society;

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Guzman,  F.
Laser Interferometry & Gravitational Wave Astronomy, AEI-Hannover, MPI for Gravitational Physics, Max Planck Society;

/persons/resource/persons40483

Nofrarias,  M.
Laser Interferometry & Gravitational Wave Astronomy, AEI-Hannover, MPI for Gravitational Physics, Max Planck Society;

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1411.6910.pdf
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Citation

Terán, M., Martín, V., Gesa, L. l., Mateos, I., Gibert, F., Karnesis, N., et al. (2015). Towards a FPGA-controlled deep phase modulation interferometer. Journal of Physics: Conference Series, 610: 012042.


Cite as: https://hdl.handle.net/11858/00-001M-0000-0028-DD0F-E
Abstract
Deep phase modulation interferometry was proposed as a method to enhance
homodyne interferometers to work over many fringes. In this scheme, a
sinusoidal phase modulation is applied in one arm while the demodulation takes
place as a post-processing step. In this contribution we report on the
development to implement this scheme in a fiber coupled interferometer
controlled by means of a FPGA, which includes a LEON3 soft-core processor. The
latter acts as a CPU and executes a custom made application to communicate with
a host PC. In contrast to usual FPGA-based designs, this implementation allows
a real-time fine tuning of the parameters involved in the setup, from the
control to the post-processing parameters.