Abstract

Multiplication is an important function of logic operation, and all-optical high-speed multiplication logic operation will lay the foundation for future high-speed optical computing and optical logic processing chip. In this article, by introducing the structure of canonical logic units-based programmable logic array (CLUs-PLA), we propose a scheme to realize all-optical 2 × 2-bit multiplier. In our scheme, different types of CLUs are generated using bidirectional multichannel four-wave mixing (FWM), then the results of multiplier at the operation of 40 Gb/s can be obtained by simple power coupling of corresponding CLUs. Eye diagrams of logic results are widely open, and the extinction ratios are more than 9.4 dB. Comparing with multiplier based on traditional hierarchical computing, multiplier based on parallel computing in our scheme can reduce the number of AND gate by 4, and avoid further deterioration of signal quality due to three-order cascade of AND gate. Moreover, the scheme has the potential to realize m × n-bit ( $m + n \leq 9$ , m and n are positive integers) multiplier at higher operation rate in the integrated platform, paving the way towards multi-bit high-speed compact complex logic devices for future high-performance optical computing and optical logic processing chip.

Simultaneous full set of three-input canonical logic units in a single nonlinear device for an all-optical programmable logic array

Wenchan Dong, Wentao Gu, Xiaoyan Gao, Yu Yu, Jianji Dong, Lei Lei, and Xinliang Zhang
Opt. Express 30(23) 41922-41932 (2022)

Expanded all-optical programmable logic array based on multi-input/output canonical logic units

Lei Lei, Jianji Dong, Bingrong Zou, Zhao Wu, Wenchan Dong, and Xinliang Zhang
Opt. Express 22(8) 9959-9970 (2014)

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)

Seven-channel all-optical reconfigurable canonical logic units multicasting at 40 Gb/s based on a nonlinearity-enhanced silicon waveguide

Xiaoyan Gao, Wentao Gu, Wenchan Dong, Heng Zhou, Lei Lei, Liao Chen, Yu Yu, Jianji Dong, and Xinliang Zhang
Opt. Express 30(18) 32650-32659 (2022)

Canonical logic units using bidirectional four-wave mixing in highly nonlinear fiber

W. C. Dong, J. Hou, Y. S. Kadhim, S. K. Tawfeeq, and X. L. Zhang
Photon. Res. 3(4) 164-167 (2015)