Optically Bistable Thin-Film Interference Devices And Holographic Techniques For Experiments In Digital Optics

Abstract

High efficiency optical logic devices and interconnect elements are required for digital optical experiments. Nonlinear interference filters, capable of acting as optical gates, have been demonstrated to switch with -2 mW input power and -50 As recovery time. Switch contrast of 20:1 has been achieved with multicavity designs. Switch energies for micrometre-dimension transversely isolated pixels of <25 pJ are predicted. Holographic input and interconnect components with >90% diffraction efficiencies have been fabricated in dichromated gelatin and assessed.

Efficient multiple-image holographic optical element

“…29 No. 3 ously switch eight ZnS optical bistable devices, demonstrating one optical interconnect application and its broadcasting capa- (6) bility. An extension of the construction technique for generating a two-dimensional focused-spot array by using a DCGH is discussed, with an experimental demonstration of a 9 X 9 array.…”

“…Two potential uses are for distributing optical clock signals among high-speed VLSI circuits4 and for connecting decision-making planes in an optical computing sys- Paper 2718 received April 19, 1989; revised manuscript received Dec. 6,1989; accepted for publication Dec. 28, 1989.…”

Array illuminators

“…Most of them use microlens arrays fabricated as HOEs, thin diffractive elements, or refractive microlenses [11][12][13].Such microlens arrays may be used simply for focusing an incident plane wave into an array of focus spots. Most of them use microlens arrays fabricated as HOEs, thin diffractive elements, or refractive microlenses [11][12][13].Such microlens arrays may be used simply for focusing an incident plane wave into an array of focus spots.…”