Pinhole hologram and its applications

Abstract

We propose the use of a pinhole-camera approach to make holograms. On recording the object beam passes through a pinhole, forming an image plane hologram, but on reconstruction the pinhole can be taken away. The reconstructed image can be programmed and processed by using optical information-processing elements placed in the position of the reconstructed pinhole or pinholes. Pinhole holography can also suppress intermodulation effects. We present brief theoretical considerations and experimental results for pinhole holograms produced for programmable holographic optical interconnects.

Optical switching and routing architectures for fiber-optic computer communication networks

“…We shall apply the pinhole hologram technique as proposed by Xu et. [14] We notice that the SLM is used to generate a changeable pinhole, that allows only an object beam to pass in one direction. In other words, the interconnection mask is illuminatea oy an object beam in one direction, where the pinhole of 8LM is set at a spatial location to allow the object beam to pass through.…”