| Presentation | 2000/3/6 BER improvement of digital holographic memory T. Kume, S. Yagi, T. Imai, M. Yamamoto, |
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| PDF Download Page | PDF download Page Link |
| Abstract(in Japanese) | (See Japanese page) |
| Abstract(in English) | We discuss a digital holographic memory that uses highly sensitive strontiumu barium niobate as a recording medium. Despite equalizing the diffraction efficiencies of recorded holograms by using schedule recording, we observed degradation of the reconstructed image near the beginning of multiplexing. Concluding that the degradation was caused by medium saturation, we tried to reduce it by using a random phase shifter and modulation code. Random phase shifters were not effective to reduce the medium saturation while 2:4 modulation code could reduce it. As a result we improved the signal-to-noise rations of the reconstructed image and hence the bit error rates. In 50-times multiplexing, we obtained bit error rates of less than 10^<-3>, which can be eliminated by conventional error correction. |
| Keyword(in Japanese) | (See Japanese page) |
| Keyword(in English) | digital holographic memory / SBN / medium saturation / random phase shifter / modulation code |
| Paper # | MR99-88,CPM99-152 |
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| Conference Information | |
| Committee | MR |
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| Conference Date | 2000/3/6(1days) |
| Place (in Japanese) | (See Japanese page) |
| Place (in English) | |
| Topics (in Japanese) | (See Japanese page) |
| Topics (in English) | |
| Chair | |
| Vice Chair | |
| Secretary | |
| Assistant | |
| Paper Information | |
| Registration To | Magnetic Recording (MR) |
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| Language | JPN |
| Title (in Japanese) | (See Japanese page) |
| Sub Title (in Japanese) | (See Japanese page) |
| Title (in English) | BER improvement of digital holographic memory |
| Sub Title (in English) | |
| Keyword(1) | digital holographic memory |
| Keyword(2) | SBN |
| Keyword(3) | medium saturation |
| Keyword(4) | random phase shifter |
| Keyword(5) | modulation code |
| 1st Author's Name | T. Kume |
| 1st Author's Affiliation | NTT Cyber Space Laboratories() |
| 2nd Author's Name | S. Yagi |
| 2nd Author's Affiliation | NTT Photonics Laboratories |
| 3rd Author's Name | T. Imai |
| 3rd Author's Affiliation | NTT Photonics Laboratories |
| 4th Author's Name | M. Yamamoto |
| 4th Author's Affiliation | >NTT Cyber Space Laboratories |
| Date | 2000/3/6 |
| Paper # | MR99-88,CPM99-152 |
| Volume (vol) | vol.99 |
| Number (no) | 666 |
| Page | pp.pp.- |
| #Pages | 6 |
| Date of Issue | |