Accession Number:

ADA190076

Title:

Study of Microcomputer-Based Real-Time Programmable Optical Signal Processor and Application.

Descriptive Note:

Final rept. 1 Aug 86-30 Sep 87,

Corporate Author:

PENNSYLVANIA STATE UNIV UNIVERSITY PARK DEPT OF ELECTRICAL ENGINEERING

Personal Author(s):

Report Date:

1987-11-18

Pagination or Media Count:

129.0

Abstract:

We have, in this period, developed a microcomputer-based optical linear transformation processing technique. The technique utilizes a systolic array processing method to perform various types of linear transformations, such as discrete Fourier transformation, discrete Hilbert transformation, discrete chirp-Z transformation and many others. By partially parallel addressing two magneto-optic spatial light modulators MOSLM, this proposed system would offer high speed and parallel processing capability of optics and programmability of microcomputer. In this research, we have shown that a color liquid crystal television LCTV can be used for color pattern recognition. The grid structure of the display panel together with a specially designed color filter provides spatially isolated polychromatic spectra to enable polychromatic signal detection. We have found a serious drawback of the color LCTV which is the lack of space invariance, even after it has been immersed in a liquid gate. This drawback is primarily due to the inherent color filter in the liquid crystal display and the phase modulation by liquid crystal molecules. A quantitative investigation of space variance of the LCTV, especially the color LCTV, is currently being studied.

Subject Categories:

  • Computer Hardware
  • Optics
  • Test Facilities, Equipment and Methods

Distribution Statement:

APPROVED FOR PUBLIC RELEASE