Abstract

An optical decision circuit is constructed by modifying the stability conditions of a previously introduced optical flip-flop memory (Appl. Phys. Lett., vol. 88, p. 181 118, May 2005). The simulations using a rate-equation model of the circuit predict fast operation speed (rise and fall times of the order of 20 ps are reached), which is most likely beyond the capabilities of recent semiconductor decision circuits that are suitable for integration (J. Lightw. Technol., vol. 24, p. 642, Mar. 2005). The decision characteristics are also better and close to the ideal digital response. They also enable realizing optical logic gates by using an interferometer and a single decision circuit. The output characteristics of an and and an or gate realized using the decision circuit are also studied.

© 2006 IEEE

Sequential optical logic implementation

B. K. Jenkins, A. A. Sawchuk, T. C. Strand, R. Forchheimer, and B. H. Soffer
Appl. Opt. 23(19) 3455-3464 (1984)

Gain-coupled optical logic in semiconductor lasers

Dominic F. G. Gallagher
Appl. Opt. 29(29) 4359-4371 (1990)

Integrated all-optical programmable logic array based on semiconductor optical amplifiers

Wenchan Dong, Zhuyang Huang, Jie Hou, Rui Santos, and Xinliang Zhang
Opt. Lett. 43(9) 2150-2153 (2018)

Optics inspired logic architecture

James Hardy and Joseph Shamir
Opt. Express 15(1) 150-165 (2007)

All-optical flip-flop based on vertical cavity semiconductor optical amplifiers

Deqiang Song, Veronica Gauss, Haijiang Zhang, Matthias Gross, Pengyue Wen, and Sadik Esener
Opt. Lett. 32(20) 2969-2971 (2007)