Physics – Optics
Scientific paper
Dec 1998
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1998phdt........45j&link_type=abstract
Thesis (PhD). UNIVERSITY OF COLORADO AT BOULDER, Source DAI-B 59/06, p. 2940, Dec 1998, 147 pages.
Physics
Optics
16
Scientific paper
The attractiveness of applying optics to computing paradigms is the inherent advantages of speed, parallelism, concurrency, and immunity of optical signals to electromagnetic interference. Optical computing architectures incorporate a variety of optical and optoelectronic components. The main focus of optoelectronic research has been in the development of optoelectronic devices. Problems in system development occur because the design tools, which are suited for device development, are ineffective and inefficient for analyzing system behavioral issues such as timing, synchronization, and control. The manifestation of these problems can be seen in the lack of expressiveness of the device and architecture models, and in the inefficiency of the simulation capabilities of the tools. The importance of effective modeling is to provide a language for conceptualization and communication that is appropriate for the system. Effective modeling is the basis for efficient simulation. Current device models are too discrete for modeling system behavior. A consequence of using these models for simulating parallel and concurrent behavior is that simulators become slow and inefficient. Petri nets are a graphical and mathematical modeling formalism that is used in describing and studying information processing systems. The appeal of Petri nets for modeling optoelectronic architectures lies in the ability of the method to model the behavior of parallel and concurrent processing structures. This dissertation addresses the issues of system-level modeling and simulating of free-space optical computing architectures by showing that Petri nets are an efficient and effective solution for behavior analysis of these complex systems. This research focuses on three areas of system design- device/component modeling, system architecture modeling, system simulation and analysis. In each area it will be shown how the Petri net is used and how efficient and effective the Petri net is in resolving problems in system design.
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