Binary Code Multi-Level Optical Computing Using Pulsed Sagnac Interferametric Switches

G. Eichmann; Y. Li; R. R. Alfano

doi:10.1117/12.936976

8 January 1987 Binary Code Multi-Level Optical Computing Using Pulsed Sagnac Interferametric Switches

G. Eichmann, Y. Li, R. R. Alfano

Proceedings Volume 0700, 1986 Intl Optical Computing Conf; (1987) https://doi.org/10.1117/12.936976
Event: 1986 International Computing Conference, 1986, Jerusalem, Israel

Abstract

Two ternary, an ordinary ternary (0T) and a binary balanced ternary (BT), number representations to be used for optical computing are discussed. An unsigned OT number is represented by a string of symbols (0,1,2), while for the BT, the three logic symbols take on the set (-1,0,+1). The BT symbols can represent a signed number. Using a particular binary encoding method, the three ternary symbols are converted to a pair of binary symbols. The binary coded ternary (BCT) representation has two advantages. First, it allows the use of the well-developed binary optical components. Second, it reduces the number of input-output chan-nels and thus is able to conserve the optical space-bandwidth product. As an example for arithmetic operations, BCT full addition algorithms are given. As examples for multiple-valued logic computing, BCT Post, Webb, and residue logic elements are discussed. Optical implementations of various BCT arithmetic and logic operations are described. Using the two-port Sagnac Interferametric switches (TPSIS), a number of implementation examples are presented.

Citation Download Citation

G. Eichmann, Y. Li, and R. R. Alfano "Binary Code Multi-Level Optical Computing Using Pulsed Sagnac Interferametric Switches", Proc. SPIE 0700, 1986 Intl Optical Computing Conf, (8 January 1987); https://doi.org/10.1117/12.936976

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