10 February 2010 Experimental study of the influence of wave-front aberration on holographic data storage
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Holographic data storage (HDS) is a prospective, next-generation mass optical storage system. In HDS, wave-front aberration in the optical system causes deterioration of the reconstructed signal quality. In this study, to clarify the margin allowed for HDS drive development, the influence of aberration in the case of wave-front aberration of defocus, where the influence of image degradation is especially high, was measured in the optical system. Further, with the aim to improve the error rate, a finite impulse response (FIR) filter using LMMSE was applied to the image deteriorated by the wave-front aberration. Consequently, we confirmed that the error rate can be reduced by applying the FIR filter for each modulation code.
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Naruki Yoshida, Naruki Yoshida, Kensuke Akieda, Kensuke Akieda, Akihito Nakajima, Akihito Nakajima, Yosuke Takahata, Yosuke Takahata, Manabu Yamamoto, Manabu Yamamoto, "Experimental study of the influence of wave-front aberration on holographic data storage", Proc. SPIE 7619, Practical Holography XXIV: Materials and Applications, 76190W (10 February 2010); doi: 10.1117/12.841626; https://doi.org/10.1117/12.841626

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