Abstract
We discuss architecture, subsystems, and applications of a multichannel
digital correlator we constructed by using a combination of optical and
electrical delays. Our system is capable of a 1-ns bin width in normal
operation, when a derandomizer is used at the input stage and a 0.25-ns bin
width when the derandomizer is bypassed. When switchable delay lines are used,
the 16 real-time channels can access a 160-ns delay range, providing up to 160
channels at 1-ns bin width or 640 channels at 0.25-ns bin width.
© 1997 Optical Society of America
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