title: Modified-signed-digit arithmetic for multi-input digital optical computing.
abstract: We propose and demonstrate a modified-signed-digit (MSP) arithmetic to achieve multi-input digital optical computing. Our approach utilizes hybrid addition-subtraction transformation (or weight operation) rules among multiple inputs. This results in operation speeds that exceed those of two-input MSD arithmetic for multi-input computing. Optical'implementation of the proposed multi-input MSD arithmetic by utilizing spatial data encoding and an optical fan-out element is also presented and experimentally demonstrated.
authors.forename: S
authors.initials: S
authors.lastname: Zhou
authors.forename: S
authors.initials: S
authors.lastname: Campbell
authors.forename: W
authors.initials: W
authors.lastname: Wu
authors.forename: P
authors.initials: P
authors.lastname: Yeh
authors.forename: H K
authors.initials: HK
authors.lastname: Liu