Systems, devices, and materials for digital optical processing

Miscellaneous · Sun Jan 01 00:00:00 EST 1989

OSTI ID:5827985

Title, M A

The massive parallelism and flexibility of three-dimensional optical communication may allow the development of new parallel computers free from the constraints of planar electronic technology. To bring the optical computer from possibility to reality, however, requires technological and scientific development in new optical systems, devices, and materials. The author presents here research results in each of these areas. First described is a prototype optical information processing system using CdS/liquid crystal spatial light modulators for optical logic and memory. This system has been developed as the first step in the implementation of a fine-grained, globally-interconnected optical processing element array. Notable system features include the implementation of programmable electronic control and the analysis of the optical power distribution within the processor, both directly applicable to the design of new and more advanced optical information processing systems. Next presented is the design and initial performance data for a new spatial light modulator combining an array of silicon phototransistors with the electro-optic material (Pb, La)(Zr, Ti)O{sub 3}, opening new possibilities for intelligent optical logic, memory, and switching devices. Important to the optimal performance of this Si/PLZT device is the fabrication of embedded electrodes in the electro-optic material, reducing the device operating voltage and switching energy while improving the uniformity of the optical modulation. An extensive computer model of embedded electrode performance and details of the electrode fabrication by reactive ion beam etching and electroless Ni deposition are presented. Finally, in the area of optical materials development he presents initial results in the RF magnetron deposition of electro-optic PLZT on r-plane sapphire.

• Research Organization: California Univ., San Diego, CA (USA)
• OSTI ID: 5827985
• Resource Relation: Other Information: Thesis (Ph.D)
• Country of Publication: United States
• Language: English

Related Subjects

99 GENERAL AND MISCELLANEOUS//MATHEMATICS, COMPUTING, AND INFORMATION SCIENCE
OPTICAL COMPUTERS
DESIGN
ARRAY PROCESSORS
DIGITAL COMPUTERS
ELECTRO-OPTICAL EFFECTS
PARALLEL PROCESSING
PHOTOTRANSISTORS
SILICON
SWITCHING CIRCUITS
THREE-DIMENSIONAL CALCULATIONS
COMPUTERS
ELECTRONIC CIRCUITS
ELEMENTS
PROGRAMMING
SEMICONDUCTOR DEVICES
SEMIMETALS
TRANSISTORS
990200* - Mathematics & Computers