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 articlepeer-review

2 Scopus citations


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
Issue number1
StatePublished - May 11 2015
Externally publishedYes
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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