Coherent correlator design analysis for the implementation of deep learning networks
Optical signal processing can reduce the electrical power consumption required over that required by graphically processing units. There remain a number of challenges to overcome. Noise is potentially much larger in optical systems than in their electronic counterparts, and some of the operations, such as a bias addition, are not easy to implement in free space processors. This paper analyzes a proposed design that utilizes a camera and lightweight electronic processing to perform the convolutional layers. Simulations are performed to compare the expected performance against an ideal system that cannot be physically realized and a proposed architecture. The impact of speckle noise in the system is analyzed and methods to reduce this are proposed.
History
Publication status
- Published
File Version
- Accepted version
Journal
Journal of the Optical Society of America A: Optics, Image Science and VisionISSN
1084-7529Publisher
Optica Publishing GroupPublisher URL
External DOI
Issue
2Volume
41Page range
272-282Department affiliated with
- Engineering and Design Publications
Research groups affiliated with
- Industrial Informatics and Signal Processing Research Group Publications
Institution
University of SussexFull text available
- Yes
Peer reviewed?
- Yes