Development of Image-Based Simulation for Holographic Data Storage System by Fast Fourier Transform Beam-Propagation Method
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概要
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We apply the fast Fourier transform beam-propagation method (FFT-BPM) to analyze holographic data storage systems (HDSSs), and develop an image-based simulation for diffraction characteristics in a transmission-type HDSS. The FFT-BPM is known as a very effective method for the design of large waveguides. By applying this method, we can obtain a beam profile in a recording medium that consists of a three-dimensional (3D) complex refractive-index distribution, and analyze the diffraction characteristics in page-oriented multiplexing holograms for an analytic region more practical than that required for the finite-difference time-domain (FDTD) method because of much lower computation time and memory. In this study, we demonstrate angular multiplexing by recording three data pages at different angles and visualize angular selectivity for diffraction efficiency and the sharpness of reconstructed images by a 3D numerical simulation.
- 2009-03-25
著者
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Okamoto Atsushi
Graduate School Of Engineering Hokkaido University
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Kitano Motoki
Graduate School of Information Science and Technology, Hokkaido University, Kita 14-Nishi 9, Kita-ku, Sapporo 060-0814, Japan
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Tanaka Junya
Graduate School of Information Science and Technology, Hokkaido University, Kita 14-Nishi 9, Kita-ku, Sapporo 060-0814, Japan
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Okamoto Atsushi
Graduate School of Information Science and Technology, Hokkaido University, Kita 14-Nishi 9, Kita-ku, Sapporo 060-0814, Japan
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