Abstract

Wavelength-multiplexed holograms have been used to store log(N) stages of an N-node butterfly interconnect. We recorded and reconstructed the holograms, using LiNbO3 over a range of 790 to 800 nm. The wavelength separation can be as little as 0.6 nm between holograms. We implemented the interconnect by recording a 4 × 4 array of elements that contained five superimposed lenses each. These lenses formed a semi-space-variant optical interconnect with a space–bandwidth product larger than 2 × 103 for each 2 mm × 2 mm lens.

© 1994 Optical Society of America

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