Accession Number : ADP008608

Title :   Integrated Free Space-Optical Permutation Network,

Corporate Author : AT AND T BELL LABS HOLMDEL NJ

Personal Author(s) : Jahns, Juergen ; Daeschner, Walter

Report Date : 22 MAY 1992

Pagination or Media Count : 3

Abstract : Permutation networks such as the Perfect Shuffle, the Banyan, and the Crossover network can be used in optical computing or photonic switching to implement parallel algorithms efficiently. A very flexible way of implementing space-variant permutation networks is by using diffractive lenslet arrays. The basic concept is to give each optical channel its own miniaturized optical system, consisting typically of two diffractive off-axis lenslet. By controlling the angle under which the light beams travel, it is possible to realize arbitrary interconnect schemes. The optical setup for this is shown. Using lithographic techniques, all components in an array can be fabricated at the same time with high alignment precision.

Descriptors :   *PHOTONICS, *OPTICAL SWITCHING, *OPTICAL LENSES, LITHOGRAPHY, PARALLEL PROCESSING, PERMUTATIONS, DIFFRACTION.

Subject Categories : Optics
      Electrooptical and Optoelectronic Devices

Distribution Statement : APPROVED FOR PUBLIC RELEASE