Accession Number:

ADA248573

Title:

Integrated Optical Pipelined Polynomial Processors

Descriptive Note:

Final technical rept. May 1985-Apr 1989

Corporate Author:

GEORGIA INST OF TECH ATLANTA SCHOOL OF ELECTRICAL ENGINEERING

Personal Author(s):

Report Date:

1991-12-01

Pagination or Media Count:

70.0

Abstract:

The purpose of this research was to design, fabricate and characterize a high speed integrated optical pipelined polynomial processor capable of evaluating square roots and solving polynomials up to third order. The Horner rule for polynomial evaluation was applied. The fabricated test devices consisted of a line of alternating adder and multiplier gratings deposited on a single chip of LiNb03. Both adder and multiplier gratings were electro-optic. The coefficients of the polynomial to be evaluated were input as voltages to the adder gratings, while the variables were scanned by applying a- ramp voltage to the multiplier gratings. To evaluate square roots, a second order polynomial was solved. The square root device performed approximately as predicted by the design equations. The third order polynomial evaluator, however, did not perform as predicted, due to a design error. This error was corrected and new devices were fabricated. These new devices performed as predicted and also incorporated significant design improvements, based on the test results of the first devices. Integrated Optics, Square Root Evaluator.

Subject Categories:

  • Electrooptical and Optoelectronic Devices

Distribution Statement:

APPROVED FOR PUBLIC RELEASE