Accession Number:

ADA179964

Title:

2-D Bistable Optical Circuits.

Descriptive Note:

Final rept. 1 Sep 84-30 Nov 85,

Corporate Author:

MASSACHUSETTS INST OF TECH CAMBRIDGE DEPT OF ELECTRICAL ENGINEERING AND COMPUTER SCIENCE

Personal Author(s):

Report Date:

1987-01-30

Pagination or Media Count:

39.0

Abstract:

This final report summarizes a investigation of 1 two dimensional arrays of bistable optical elements and circuits based on microchannel spatial light modulator MSLM technology 2 an investigation of the possible applications of the balanced ternary system BTS in digital optical processing and 3 a preliminary study of the design of hybrid optical inference machines. The bistable circuit arrays employ optical feedback around an MSLM, and a novel device called the beamlet from a single input laser beam. A general purpose versatile circuit is discussed as well as systems for phase-driven bistability and amplitude-driven bistability. In the BTS study, it is shown that the BTS offers several advantages over the conventional binary system. These include more efficient use of optical power and space-bandwidth product coupled with increased dynamic range when performing multiplication. Finally, in the symbolic processing program, two novel hybrid optical architectures are proposed for parallel symbolic inference on electronic knowledge bases. Keywords Bistability Spatial light modulators Optical information processing Feedback.

Subject Categories:

  • Electrooptical and Optoelectronic Devices
  • Cybernetics

Distribution Statement:

APPROVED FOR PUBLIC RELEASE