Computer Science – Performance
Scientific paper
Jul 2010
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2010spie.7734e.123m&link_type=abstract
Optical and Infrared Interferometry II. Edited by Danchi, William C.; Delplancke, Françoise; Rajagopal, Jayadev K. Proceeding
Computer Science
Performance
Scientific paper
We report on the testing of the modulators within the MROI fringe tracking beam combiner. Modulation in the beam combiner will be performed via modulators introducing an optical path difference in increments of λ/4 into the beams. Knowledge of the path difference introduced needs to be accurate to within 1!. To achieve this accuracy, the modulators are characterized and the desired step waveform optimized through a Fourier analysis technique. Control is implemented in an FPGA embedded system and performance will be monitored by means of a slow loop Fourier algorithm. Details of the progress on characterization, optimization and future implementation are presented here.
Baird D. H.
Buscher David F.
Haniff Christopher A.
Jurgenson Colby A.
McCord Krista M.
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