Abstract

Conventional multichannel digital correlators are based on electronic shift register delays and logic gate multipliers. Due to problems of low skew clock distribution over a large number of channels and power consumption, they are typically restricted to bandwidths of 50 MHz. We recently reported a successful implementation¹ of a fibre-optic-based digital correlator² which has the potential to exceed 500 MHz bandwidths. Fig. 1 shows a schematic diagram of the prototype correlator.

© 1992 Optical Society of America