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Wide-dynamic-range digital correlator using field programmable gate arrays

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3 Author(s)
Kinoshita, Junji ; Department of Physics, Tokyo Women’s Medical College, Shinjuku-ku, Tokyo 162, Japan ; Matsumoto, Midori ; Aoki, Tadashi

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A new digital correlator was developed. The one-bit-clipped digital correlator used so far is simple and sensitive enough to detect one photon. The clipping circuits, however, tend to distort the temporal characteristics. In order to alleviate the distortion, we extended the clipping points of counters and multipliers to two bits and three bits, respectively. The novel correlator has the dynamic range ten times wider than that of one-bit-clipped correlator. Here we report the 130 channel correlator that uses seven chips of field programmable gate array. © 1997 American Institute of Physics.

Published in:

Review of Scientific Instruments  (Volume:68 ,  Issue: 12 )