Modulation Coding for Digital Holographic Memory Using Strontium Barium Niobate
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概要
- 論文の詳細を見る
We discuss modulation coding for a digital holographic memory that uses highly sensitive strontium barium niobate. We observed degradation of the reconstructed images near the beginning of multiplexing. Concluding that the degradation was caused by medium saturation, we reduced it by using a $2:4$ modulation code, which reduces the average intensity of the coded pattern and the clustering of bright bits. As a result, we improved the signal-to-noise ratios of the reconstructed images and hence the bit error rates of the system. We obtained bit error rates of less than $10^{-3}$, which can be eliminated by conventional error correction, in 50-times-multiplexing.
- Publication Office, Japanese Journal of Applied Physics, Faculty of Science, University of Tokyoの論文
- 2001-04-15
著者
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Imai Tadayuki
Ntt Photonics Laboratories
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Yagi Shogo
Ntt Photonics Laboratories Nippon Telegraph And Telephone Corporation
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KUME Tatsuya
NTT Cyber Space Laboratories
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Yamamoto Manabu
Ntt Cyber Space Laboratories
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Yamamoto Manabu
NTT Cyber Space Laboratories, 9-11 Midori-cho 3-chome, Musashino, Tokyo 180-8585, Japan
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Kume Tatsuya
NTT Cyber Space Laboratories, 9-11 Midori-cho 3-chome, Musashino, Tokyo 180-8585, Japan
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