Photonic Computing Using The Modified Signed-Digit Number Representation

Barry L. Drake; Richard P. Bocker; Mark E. Lasher; Richard H. Patterson; William J. Miceli

doi:10.1117/12.7973778

1 January 1986 Photonic Computing Using The Modified Signed-Digit Number Representation

Barry L. Drake, Richard P. Bocker, Mark E. Lasher, Richard H. Patterson, William J. Miceli

Author Affiliations +

Optical Engineering, Vol. 25, Issue 1, 250138 (January 1986). https://doi.org/10.1117/12.7973778

Abstract

Improving the precision of optically performed computations is a critical aspect of photonic computing. One possible method for improving precision is through the use of modified signed-digit (MSD) arithmetic. Optical implementation of MSD arithmetic offers several important advantages over other optical techniques such as the digital multiplication by analog convolution (DMAC) algorithm or the use of residue arithmetic. These advantages include the parallel pipeline flow of digits due to carry-free addition and subtraction, fixed-point as well as floating-point capability, and the potential for performing divisions. We present a brief description of the modified signed-digit number system and suggest one optical architecture for implementing MSD fixed-point addition, subtraction, and multiplication.

Citation Download Citation

Barry L. Drake, Richard P. Bocker, Mark E. Lasher, Richard H. Patterson, and William J. Miceli "Photonic Computing Using The Modified Signed-Digit Number Representation," Optical Engineering 25(1), 250138 (1 January 1986). https://doi.org/10.1117/12.7973778

Published: 1 January 1986

ACCESS THE FULL ARTICLE

INSTITUTIONAL
Select your institution to access the SPIE Digital Library.

SELECT YOUR INSTITUTION

PERSONAL
Sign in with your SPIE account to access your personal subscriptions or to use specific features such as save to my library, sign up for alerts, save searches, etc.

PERSONAL SIGN IN

No SPIE Account? Create one

PURCHASE THIS CONTENT

SUBSCRIBE TO DIGITAL LIBRARY

50 downloads per 1-year subscription

Members: $195

Non-members: $335 ADD TO CART

25 downloads per 1 - year subscription

Members: $145

Non-members: $250 ADD TO CART

PURCHASE SINGLE ARTICLE

Includes PDF, HTML & Video, when available