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Proceedings Paper

Sensitivity of volume holographic optical computing
Author(s): Yao Yi; Liang-cai Cao; Tian-xiang Zheng; Wei Guo; Qing-sheng He; Guo-fan Jin
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Paper Abstract

Volume holographic correlator (VHC) calculates the inner product between two data pages through parallel optical correlation. It has great potential in the field of information processing and real-time identification because of its high storage density, integration of storing and computing, and multi-channel parallel processing ability. Current studies on the improvements of VHC mainly focus on the processing speed and channel uniformity. However, the accuracy of the VHC is mainly related to the minimum output intensity varying with the spatial light modulator (SLM) pixel intensity, which is the sensitivity of the VHC. In this work, the Minimum Pixel Block Size (MPBS) is proposed to characterize the sensitivity of the VHC. The Effective Number of Pixels (ENP) is employed to evaluate the optical computing ability, which is more accurate compared with traditional calculating method based on the pixel number of the SLM. The theoretical and experimental results are instructive in the system design. Desired system performance can be achieved by optimizing the system parameters.

Paper Details

Date Published: 20 August 2013
PDF: 7 pages
Proc. SPIE 8913, International Symposium on Photoelectronic Detection and Imaging 2013: Optical Storage and Display Technology, 891312 (20 August 2013); doi: 10.1117/12.2035037
Show Author Affiliations
Yao Yi, Tsinghua Univ. (China)
Liang-cai Cao, Tsinghua Univ. (China)
Tian-xiang Zheng, Tsinghua Univ. (China)
Wei Guo, People's Public Security Univ. of China (China)
Qing-sheng He, Tsinghua Univ. (China)
Guo-fan Jin, Tsinghua Univ. (China)

Published in SPIE Proceedings Vol. 8913:
International Symposium on Photoelectronic Detection and Imaging 2013: Optical Storage and Display Technology
Changsheng Xie; Yikai Su; Liangcai Cao, Editor(s)

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