Open AccessIntegration of a PQ:PMMA holographic memory device into the hybrid opto-electronic correlator for shift, scale, and rotation invariant target recognition
Author(s) -
Julian Gamboa,
Tabassom Hamidfar,
Selim M. Shahriar
Publication year - 2021
Publication title -
optics express
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.394
H-Index - 271
ISSN - 1094-4087
DOI - 10.1364/oe.443554
Subject(s) - holography , optical correlator , computer science , optics , signal (programming language) , signal processing , rotation (mathematics) , invariant (physics) , optoelectronics , computer hardware , materials science , artificial intelligence , physics , digital signal processing , fourier transform , quantum mechanics , programming language , mathematical physics
The hybrid optoelectronic correlator (HOC) combines optical and electronic signal processing to achieve the same functionality as traditional optical correlators but without the need for dynamic materials. Here we propose and demonstrate the integration of a PQ:PMMA holographic memory device (HMD) into the HOC as a high-speed all-optical database for reference images. Using a PQ:PMMA HMD for one of the inputs eliminates one of the key speed limitations in the HOC. The observed correlation signal agrees with simulations but highlights the need for high quality holographic substrates in this application.