US 12,229,662 B2
All optical neural network
Shengwang Du, Hong Kong (CN); Junwei Liu, Hong Kong (CN); Ying Zuo, Hong Kong (CN); Bohan Li, Hong Kong (CN); Yujun Zhao, Hong Kong (CN); Yue Jiang, Hong Kong (CN); Peng Chen, Shanghai (CN); and You-Chiuan Chen, Hong Kong (CN)
Assigned to THE HONG KONG UNIVERSITY OF SCIENCE AND TECHNOLOGY, Hong Kong (CN)
Filed by The Hong Kong University of Science and Technology, Hong Kong (CN)
Filed on Apr. 14, 2020, as Appl. No. 16/848,525.
Claims priority of provisional application 62/834,005, filed on Apr. 15, 2019.
Prior Publication US 2020/0327403 A1, Oct. 15, 2020
Int. Cl. G06N 3/067 (2006.01); G02B 27/12 (2006.01); G02F 1/35 (2006.01); G06N 3/04 (2023.01); G06N 3/08 (2023.01)
CPC G06N 3/0675 (2013.01) [G02B 27/12 (2013.01); G02F 1/3515 (2013.01); G06N 3/04 (2013.01); G02F 2203/01 (2013.01); G06N 3/08 (2013.01)] 17 Claims
OG exemplary drawing
 
1. A system for implementing an optical neuron, the system comprising:
a linear subsystem configured to perform an optical summation operation that combines one or more beams of light to generate a coupling beam of light as an intermediate signal, wherein the linear subsystem comprises:
a first spatial light modulator (SLM) for modulating the one or more beams of light; and
an optical lens that combines the one or more beams of light to generate the coupling beam of light; and
a nonlinear subsystem configured to perform an optical nonlinear operation based on the coupling beam of light to generate an activation response signal, wherein the nonlinear subsystem includes a nonlinear optical medium that has an electromagnetically induced transparency (EIT) characteristic, and wherein the activation response signal comprises a probe beam of light transmitted through the nonlinear optical medium;
wherein the nonlinear subsystem comprises a probe laser configured to generate the probe beam of light, wherein the probe beam of light is directed at the nonlinear optical medium, and the transmission of the probe beam of light through the nonlinear optical medium is controlled based on the coupling beam of light.