Towards a FPGA-controlled deep phase modulation interferometer

M. Terán, V. Martín, Ll Gesa, I. Mateos, F. Gibert, N. Karnesis, J. Ramos-Castro, T. S. Schwarze, O. Gerberding, G. Heinzel, F. Guzmán, M. Nofrarias

Research output: Contribution to journalConference article

1 Scopus citations

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.

Original languageEnglish (US)
Article number012042
JournalJournal of Physics: Conference Series
Volume610
Issue number1
DOIs
StatePublished - May 11 2015
Event10th International LISA Symposium - Gainesville, United States
Duration: May 18 2014May 23 2014

ASJC Scopus subject areas

  • Physics and Astronomy(all)

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    Terán, M., Martín, V., Gesa, L., Mateos, I., Gibert, F., Karnesis, N., Ramos-Castro, J., Schwarze, T. S., Gerberding, O., Heinzel, G., Guzmán, F., & Nofrarias, M. (2015). Towards a FPGA-controlled deep phase modulation interferometer. Journal of Physics: Conference Series, 610(1), [012042]. https://doi.org/10.1088/1742-6596/610/1/012042