Improved Signal-to-Noise Ratio Using Phase Compensation in Shift- and Angle-Multiplexed Holographic Data Storage
スポンサーリンク
概要
- 論文の詳細を見る
The phase compensation method and the use of a speckled reference beam was proposed for use in a shift- and angle-multiplexed holographic data storage system. As phase is random in a speckled reference beam, we multiplexed a plane wave with a speckled reference beam. Using this method enabled us to suppress phase fluctuations, and we thus increased the signal-to-noise ratio (SNR) by 2.2 dB in digital data. The theoretical limit of bandwidth and resolution of phase was also considered. The bandwidth of the phase modulator was made the limit of the control bandwidth in the current system. Widening it enabled us to create a more stable holographic data storage system with a higher SNR.
- Published by the Japan Society of Applied Physics through the Institute of Pure and Applied Physicsの論文
- 2008-07-25
著者
-
ISHII Norihiko
NHK Science and Technical Research Laboratories
-
KINOSHITA Nobuhiro
NHK Science and Technical Research Laboratories
-
SHIMIDZU Naoki
NHK Science and Technical Research Laboratories
-
Kamijo Koji
Nhk Science And Technical Research Laboratories
-
Muroi Tetsuhiko
NHK Science and Technical Research Laboratories, 1-10-11 Kinuta, Setagaya-ku, Tokyo 157-8510, Japan
-
Shimidzu Naoki
NHK Science and Technical Research Laboratories, 10-11 Kinuta 1-chome, Setagaya-ku, Tokyo 157-8510, Japan
関連論文
- GeSbTe Phase Change Material for Blue-Violet Laser at High Linear Speed
- Feasibility of High-Data-Rate Media with Ge-Sb-Te Phase-Change Material
- Integrated Simulation Technique for Volume Holographic Memory Using Finite-Difference Time-Domain Method
- Crystal Structures and Photoluminescence Properties of Gd_2O_3:Eu^ Phosphor Thin Films Prepared by Laser Ablation
- Feasibility of High-Data-Rate Media with Ge–Sb–Te Phase-Change Material
- Compensation of Interference Fringe Distortion Due to Temperature Variation in Holographic Data Storage
- Compensation and Improvement of Intensity and Distribution in Reconstructed Image Using Adaptive Optics in Holographic Data Storage
- Method of Phase Compensation for Holographic Data Storage
- Improved Signal-to-Noise Ratio Using Phase Compensation in Shift- and Angle-Multiplexed Holographic Data Storage
- Integrated Simulation Technique for Volume Holographic Memory Using Finite-Difference Time-Domain Method
- Crystal Structures and Photoluminescence Properties of Gd2O3:Eu3+ Phosphor Thin Films Prepared by Laser Ablation