Accession Number:

ADA214028

Title:

Research in Optical Interconnection Techniques.

Descriptive Note:

Final rept. 1 May 84-31 Mar 89,

Corporate Author:

UNIVERSITY OF SOUTHERN CALIFORNIA LOS ANGELES SIGNAL AND IMAGE PROCESSING INST

Report Date:

1989-09-30

Pagination or Media Count:

108.0

Abstract:

This report summarizes results of basic research on the application of bulk 3-D optical signal processing and communication technology to the interconnection of digital systems. Emphasis is on the typical distances and bandwidths found at the board and processor level of interconnection. Results are relevant to telecommunications, data networks, and parallel computer architectures. Important issues in the design of any interconnection network electronic or optical are reconfiguration time synchronousasynchronous operation data word size unidirectionalbidirectional data transfer broadcast capability and propagation delay. Crossbar networks are very desirable in that arbitrary 11 interconnection of N inputs to N outputs is possible without connection. More than 14 basic optical matrix-vector and matrix-matrix multiplier designs having binary weights for implementation of crossbars are given. These systems may use acousto-optic, magneto-optic or electro-optic spatial light modulator, have data bandwidths of up to 1 GHz, and can reconfigure in times as low as 1 microsec. A related result is a design for an optical crossbar network using variable-grating-mode liquid crystal devices. Several types of 3-D dynamic optical networks that interconnect a 2-D array consisting of N x N input lines with a similar 2-D array of N x N output lines are given. These 3-D networks are intended to make specific use of the volume non-planar aspects of optics. We have designed 3-D extensions to omega or shuffle exchange networks, which can be thought of as an extension of planar shuffle exchange networks.

Subject Categories:

  • Computer Systems
  • Telemetry

Distribution Statement:

APPROVED FOR PUBLIC RELEASE